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Storm ActivityMontana Storm ActivityBig Horn County, MT
Montana · Official NOAA Storm Data

Big Horn County Hail Map & Storm Reports

Hail, wind, and tornado reports from official NOAA sources (NWS & SPC) · Last 12 months · Updated Sep 12, 2026

Has it hailed in Big Horn County, Montana recently? Official National Weather Service (NWS) and Storm Prediction Center (SPC) records say yes: 92 hail reports with hail up to 1", among 188 severe weather events logged here in the last 12 months, together with 96 high-wind reports with gusts up to 80 mph. The most recent recorded storm activity was in September 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.

Map of Big Horn County, Montana showing the county boundary and surrounding cities
Big Horn County, Montana. Map © Mapbox © OpenStreetMap · County boundary: US Census Bureau.

Big Horn County hail map

Where hail and high-wind reports clustered across Big Horn County over the last 12 months. Heat shows report density and significance, not radar.

188
Events (12 mo)
92
Hail
96
Wind
0
Tornado
1"
Max hail
80
Max wind (mph)
September 2026
Most recent

What the radar showed

Radar snapshot during the May 13, 2026 wind event near 7 W Lodge Grass, Big Horn County, Montana, with NWS warning polygons
NEXRAD radar at the moment of the May 13, 2026 wind event (80 mph) near 7 W Lodge Grass. Outlined polygons are the storm-based warnings exactly as issued by the National Weather Service. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

Last 30 days in Big Horn County

Current NEXRAD radar over Big Horn County, Montana with recent storm report locations
Current radar over the Big Horn County area, with storm reports from the past 7 days plotted. Refreshes throughout the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.
September 2026 1 storm day · 2 NWS warnings — wind to 50 mph Exact dates & locations in app →
August 2026 6 storm days · 14 NWS warnings — hail to 0.5", wind to 50 mph Exact dates & locations in app →

Recent storms — full detail available in the app

Storm activity from the last 30 days is summarized at the county level on this page. Exact locations, radar snapshots, and official warning boundaries for recent events are available with a free account.

See the specifics — free →

Storm log — the official record, day by day

Events older than 30 days, as recorded by the National Weather Service and Storm Prediction Center. Excerpts are quoted directly from official warnings and verified reports.

Wednesday, July 29, 2026

5 NWS warnings — hail up to 0.75"

“At 808 PM MDT, Doppler radar was tracking a strong thunderstorm 15 miles northeast of Crow Agency moving north at 25 mph. Hazard: Wind gusts up to 50 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Mainly rural areas of North Central Big Horn County.”

NWS severe weather mention · Big Horn County

“At 810 PM MDT, Doppler radar was tracking a strong thunderstorm near Lodge Grass moving east at 5 mph. Hazard: Wind gusts up to 50 mph and half inch size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Lodge Grass.”

NWS severe weather mention · Big Horn County

Saturday, July 25, 2026

9 NWS warnings — hail up to 0.25", wind gusts up to 55 mph

NEXRAD radar during the Saturday, July 25, 2026 storm activity in Big Horn County, Montana
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 829 PM MDT, Doppler radar was tracking an area of strong thunderstorms extending from 14 miles north of Worden to 16 miles northwest of Fort Smith, moving east at 35 mph. Hazard: Wind gusts of 45 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Gusty winds may impact travel along Interstate 90 and Interstate 94 east of Billings.”

NWS severe weather mention · Big Horn County

“At 829 PM MDT, Doppler radar was tracking an area of strong thunderstorms extending from 14 miles north of Worden to 16 miles northwest of Fort Smith, moving east at 35 mph. Hazard: Wind gusts of 45 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Gusty winds may impact travel along Interstate 90 and Interstate 94 east of Billings.”

NWS severe weather mention · Big Horn County

Friday, July 24, 2026

1 NWS warning — hail up to 0.25"

“At 1037 PM MDT, Doppler radar was tracking an area of strong thunderstorms extending from 13 miles north of Shepherd to 19 miles southeast of Lockwood, moving east at 35 mph. Hazard: Wind gusts of 45 to 55 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

Sunday, July 19, 2026

3 NWS warnings — hail up to 0.25", wind gusts up to 50 mph

“At 534 PM MDT, Doppler radar was tracking a line of showers extending from 11 miles north of Busby to 15 miles northeast of Ranchester moving east at 45 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 534 PM MDT, Doppler radar was tracking a line of showers extending from 11 miles north of Busby to 15 miles northeast of Ranchester moving east at 45 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

Saturday, July 18, 2026

2 NWS warnings — wind gusts up to 50 mph

“At 819 PM MDT, Doppler radar was tracking an area of strong thunderstorms extending from 16 miles north of Shepherd to 7 miles southeast of Pryor, or extending from 21 miles south of Roundup to 32 miles south of Billings, moving east at 30 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 819 PM MDT, Doppler radar was tracking an area of strong thunderstorms extending from 16 miles north of Shepherd to 7 miles southeast of Pryor, or extending from 21 miles south of Roundup to 32 miles south of Billings, moving east at 30 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

Friday, July 17, 2026

2 NWS warnings — hail up to 0.25"

“At 805 PM MDT, Doppler radar was tracking a line of strong thunderstorms extending from 18 miles southwest of Melstone to 10 miles south of Custer, moving northeast at 25 mph. Hazard: Wind gusts up to 50 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 658 PM MDT, Doppler radar was tracking a line of strong thunderstorms extending from 21 miles north of Billings Heights to 23 miles south of Ballantine, moving northeast at 25 mph. Hazard: Wind gusts up to 50 mph and pea size hail. to 50 mph range. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible.”

NWS severe weather mention · Big Horn County

Thursday, July 16, 2026

2 NWS warnings — hail up to 0.25"

“At 408 PM MDT, Doppler radar was tracking an area of strong thunderstorms 9 miles northeast of Lodge Grass, or 28 miles southeast of Hardin, moving northeast at 20 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 408 PM MDT, Doppler radar was tracking an area of strong thunderstorms 9 miles northeast of Lodge Grass, or 28 miles southeast of Hardin, moving northeast at 20 mph. Hazard: Wind gusts up to 40 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

Wednesday, July 15, 2026

7 NWS warnings — hail up to 0.75"

“At 601 PM MDT, Doppler radar was tracking an area of strong thunderstorms extending from 16 miles north of Shepherd to 16 miles north of Fort Smith, or extending from 21 miles south of Roundup to 22 miles southwest of Hardin, moving northeast at 15 mph. Hazard: Wind gusts up to 50 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”

NWS severe weather mention · Big Horn County

“At 601 PM MDT, Doppler radar was tracking an area of strong thunderstorms extending from 16 miles north of Shepherd to 16 miles north of Fort Smith, or extending from 21 miles south of Roundup to 22 miles southwest of Hardin, moving northeast at 15 mph. Hazard: Wind gusts up to 50 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”

NWS severe weather mention · Big Horn County

Tuesday, July 14, 2026

1 NWS warning — hail up to 0.5"

“At 1123 PM MDT, Doppler radar was tracking a line of strong thunderstorms extending from 39 miles north of Hysham to 24 miles north of Busby, or extending from 39 miles north of Hysham to 24 miles west of Colstrip, moving east at 20 mph. Hazard: Wind gusts up to 50 mph and half inch size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”

NWS severe weather mention · Big Horn County

Friday, July 10, 2026

1 NWS warning — hail up to 0.5"

“At 647 PM MDT, Doppler radar was tracking a strong thunderstorm 21 miles southeast of Billings, moving northeast at 25 mph. Hazard: Wind gusts up to 40 mph and half inch size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

Wednesday, July 8, 2026

8 NWS warnings — hail up to 0.75", wind gusts up to 55 mph

NEXRAD radar during the Wednesday, July 8, 2026 storm activity in Big Horn County, Montana
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 832 PM MDT, Doppler radar was tracking a line of strong thunderstorms extending from 9 miles east of Columbus to near Fromberg, or extending from 9 miles east of Columbus to 17 miles northeast of Red Lodge, moving east at 35 mph. Hazard: Wind gusts of 45 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 1039 PM MDT, Doppler radar was tracking a line of strong thunderstorms extending from 9 miles northwest of Hardin to 22 miles south of Ballantine, or extending from 9 miles northwest of Hardin to 18 miles west of Hardin, moving east at 25 mph. Hazard: Wind gusts up to 50 mph. wind gusts up to 45 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”

NWS severe weather mention · Big Horn County

Monday, July 6, 2026

3 NWS warnings — hail up to 0.75"

“At 842 PM MDT, Doppler radar was tracking a strong thunderstorm 27 miles south of Fort Smith over the Bighorn Mountains, or 39 miles west of Sheridan, moving east at 25 mph. Hazard: Wind gusts up to 40 mph and penny size hail, along with very heavy rain. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible.”

NWS severe weather mention · Big Horn County

“At 908 PM MDT, Doppler radar was tracking a line of strong thunderstorms extending from near Hardin to 19 miles northwest of Dayton, moving northeast at 25 mph. Hazard: Wind gusts up to 40 mph and pockets of half inch size hail, along with very heavy rain. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible.”

NWS severe weather mention · Big Horn County

Friday, July 3, 2026

8 NWS warnings — hail up to 0.75"

NEXRAD radar during the Friday, July 3, 2026 storm activity in Big Horn County, Montana
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 758 PM MDT, Doppler radar was tracking a strong thunderstorm 14 miles southeast of Pryor, or 34 miles southeast of Billings, moving east at 30 mph. Hazard: Wind gusts up to 50 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 813 PM MDT, Doppler radar was tracking an area of strong thunderstorms 20 miles southeast of Lockwood, or 22 miles southeast of Billings, moving east at 30 mph. Hazard: Wind gusts up to 50 mph and half inch size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

Thursday, July 2, 2026

4 NWS warnings — hail up to 0.88"

“At 505 PM MDT, Doppler radar was tracking a strong thunderstorm 14 miles northwest of Fort Smith, or 27 miles southwest of Hardin, moving northeast at 35 mph. Hazard: Wind gusts up to 50 mph and nickel size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 505 PM MDT, Doppler radar was tracking a strong thunderstorm 14 miles northwest of Fort Smith, or 27 miles southwest of Hardin, moving northeast at 35 mph. Hazard: Wind gusts up to 50 mph and nickel size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

Wednesday, July 1, 2026

4 NWS warnings — hail up to 0.75"

“At 621 PM MDT, Doppler radar was tracking an area of strong thunderstorms extending from or extending from 20 miles north of Roundup to 16 miles west of Hardin, moving east at 25 mph. Hazard: Wind gusts up to 50 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 647 PM MDT, Doppler radar was tracking an area of strong thunderstorms 11 miles southeast of Lodge Grass moving east at 25 mph. Hazard: Wind gusts up to 50 mph and half inch size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

Saturday, June 27, 2026

1 SPC verified storm report · 3 NWS warnings — hail up to 1"

“At 318 PM MDT, Doppler radar was tracking an area of strong thunderstorms near Fort Smith, or 34 miles southwest of Hardin, moving north at 25 mph. Hazard: Wind gusts up to 50 mph and nickel size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 351 PM MDT, Doppler radar was tracking a line of strong thunderstorms extending from 7 miles north of Custer to 8 miles northeast of Hardin, or extending from 17 miles west of Hysham to 8 miles northeast of Hardin, moving north at 30 mph. Hazard: Wind gusts up to 40 mph and half inch size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”

NWS severe weather mention · Big Horn County

Friday, June 26, 2026

1 NWS warning — hail up to 0.5"

“At 702 PM MDT, Doppler radar was tracking an area of strong thunderstorms 26 miles south of Ashland, or 40 miles west of Broadus, moving northeast at 35 mph. Hazard: Wind gusts up to 40 mph and half inch size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

Thursday, June 25, 2026

3 NWS warnings — hail up to 0.75"

“At 257 PM MDT, Doppler radar was tracking a strong thunderstorm 25 miles east of Sheridan, moving east at 25 mph. Hazard: Wind gusts up to 40 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 1247 PM MDT, Doppler radar was tracking a strong thunderstorm 18 miles north of Fort Smith, or 23 miles southwest of Hardin, moving east at 20 mph. Hazard: Wind gusts up to 40 mph, pea size hail, and heavy rainfall. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

Monday, June 22, 2026

1 SPC verified storm report · 1 NWS warning — hail up to 0.5", wind gusts up to 71 mph

“At 329 AM MDT, Doppler radar was tracking a strong thunderstorm 7 miles northeast of Ballantine, or 27 miles northwest of Hardin, moving east at 15 mph. Hazard: Wind gusts up to 40 mph and half inch size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Pompeys Pillar.”

NWS severe weather mention · Big Horn County

Wednesday, June 10, 2026

1 NWS warning — wind gusts up to 55 mph

“West to northwest winds gusting 40 to 55 mph have been observed over foothills of south-central Montana as well as locations near Billings. Those outdoors or driving this evening should be prepared for these sudden strong wind gusts.”

NWS severe weather mention · Big Horn County

Tuesday, June 9, 2026

2 NWS warnings — wind gusts up to 50 mph

“At 509 PM MDT, Doppler radar was tracking an area of thunderstorms extending from 15 miles northeast of Crow Agency to 10 miles southeast of Lodge Grass, or extending from 19 miles east of Hardin to 31 miles northwest of Sheridan, moving east at 35 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 509 PM MDT, Doppler radar was tracking an area of thunderstorms extending from 15 miles northeast of Crow Agency to 10 miles southeast of Lodge Grass, or extending from 19 miles east of Hardin to 31 miles northwest of Sheridan, moving east at 35 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

Sunday, June 7, 2026

12 NWS warnings — hail up to 0.75"

NEXRAD radar during the Sunday, June 7, 2026 storm activity in Big Horn County, Montana
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 732 PM MDT, Doppler radar was tracking a line of strong thunderstorms extending from near Ashland to 33 miles east of Sheridan, or extending from 23 miles southeast of Colstrip to 33 miles east of Sheridan, moving east at 55 mph. Hazard: Wind gusts of up to 55 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”

NWS severe weather mention · Big Horn County

“At 513 PM MDT, Doppler radar was tracking a strong thunderstorm 11 miles northeast of Pryor, or 24 miles southeast of Billings, moving northeast at 40 mph. Hazard: Heavy rain, wind gusts up to 40 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... St.”

NWS severe weather mention · Big Horn County

Monday, June 1, 2026

10 NWS warnings — hail up to 0.75"

NEXRAD radar during the Monday, June 1, 2026 storm activity in Big Horn County, Montana
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 1049 PM MDT, Doppler radar was tracking a strong thunderstorm 32 miles south of Lame Deer, or 31 miles northeast of Sheridan, moving northeast at 25 mph. Hazard: Wind gusts up to 40 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Birney.”

NWS severe weather mention · Big Horn County

“At 358 PM MDT, Doppler radar was tracking a line of strong thunderstorms extending from 8 miles east of Crow Agency to 7 miles northeast of Lodge Grass, or extending from 18 miles southeast of Hardin to 27 miles southeast of Hardin, moving east at 30 mph. Hazard: Wind gusts up to 40 mph, penny size hail, and brief heavy rain.”

NWS severe weather mention · Big Horn County

Saturday, May 30, 2026

1 NWS warning — hail up to 0.75"

“At 631 PM MDT, Doppler radar was tracking a strong thunderstorm 28 miles northeast of Sheridan, moving northeast at 10 mph. Hazard: Penny size hail. Impact: Minor damage to outdoor objects is possible. Locations impacted include... Mainly rural areas of Southeastern Big Horn and Southern Rosebud Counties.”

NWS severe weather mention · Big Horn County

Wednesday, May 13, 2026

3 SPC verified storm reports · 5 NWS warnings — wind gusts up to 80 mph

NEXRAD radar during the Wednesday, May 13, 2026 storm activity in Big Horn County, Montana
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“At 924 PM MDT, Doppler radar was tracking an area of showers and thunderstorms 8 miles northwest of Busby, or 27 miles east of Hardin, moving northeast at 45 mph. Hazard: Wind gusts of 50 to 60 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 924 PM MDT, Doppler radar was tracking an area of showers and thunderstorms 8 miles northwest of Busby, or 27 miles east of Hardin, moving northeast at 45 mph. Hazard: Wind gusts of 50 to 60 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

Thursday, May 7, 2026

1 NWS warning — hail up to 0.5"

“At 503 PM MDT, Doppler radar was tracking a line of thunderstorms extending from 13 miles south of Lockwood to over Red Lodge, or extending from 13 miles southeast of Billings to over Red Lodge, moving southeast at 30 mph. Hazard: Wind gusts up to 50 mph and half inch size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects.”

NWS severe weather mention · Big Horn County

Thursday, April 23, 2026

2 NWS warnings — wind gusts up to 58 mph

“At 115 AM MDT, Doppler radar was tracking a line of showers extending from 25 miles north of Hysham to 9 miles northeast of Fromberg, moving southeast at 25 mph. Hazard: Wind gusts of 40 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 115 AM MDT, Doppler radar was tracking a line of showers extending from 25 miles north of Hysham to 9 miles northeast of Fromberg, moving southeast at 25 mph. Hazard: Wind gusts of 40 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

Wednesday, April 22, 2026

4 NWS warnings — hail up to 0.25", wind gusts up to 50 mph

“At 545 PM MDT, Doppler radar was tracking an area of strong thunderstorms 12 miles southeast of Ballantine, or 17 miles northwest of Hardin, moving north at 30 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Hardin, Custer, Ballantine and Pompeys Pillar.”

NWS severe weather mention · Big Horn County

“At 633 PM MDT, Doppler radar was tracking an area of strong thunderstorms near Hardin, moving north at 20 mph. Hazard: Wind gusts up to 50 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Hardin, Lodge Grass, Crow Agency, St. Xavier and Crow Indian Reservation.”

NWS severe weather mention · Big Horn County

Friday, April 17, 2026

2 NWS warnings — wind gusts up to 50 mph

“At 423 PM MDT, Doppler radar was tracking an area of scattered snow showers moving southeast at 25 mph. Locations impacted include... Billings, Sheridan, Livingston, Hardin, Colstrip, Red Lodge, Columbus, Roundup, Big Timber, Harlowton, Hysham, Custer, Laurel, Ranchester, Dayton, Bridger, Joliet, Fromberg, Lodge Grass and Ryegate.”

NWS severe weather mention · Big Horn County

“At 423 PM MDT, Doppler radar was tracking an area of scattered snow showers moving southeast at 25 mph. Locations impacted include... Billings, Sheridan, Livingston, Hardin, Colstrip, Red Lodge, Columbus, Roundup, Big Timber, Harlowton, Hysham, Custer, Laurel, Ranchester, Dayton, Bridger, Joliet, Fromberg, Lodge Grass and Ryegate.”

NWS severe weather mention · Big Horn County

Thursday, April 2, 2026

3 NWS warnings — hail up to 0.75"

“At 325 PM MDT, Doppler radar was tracking a shower 10 miles southwest of Pryor moving north at 15 mph. Hazard: Wind gusts up to 40 mph and penny size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Pryor.”

NWS severe weather mention · Big Horn County

“At 646 PM MDT, Doppler radar was tracking thunderstorms 25 miles south of Busby, or 26 miles north of Sheridan, moving east at 25 mph. Hazard: Wind gusts up to 40 mph and half inch size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include...”

NWS severe weather mention · Big Horn County

Saturday, March 14, 2026

2 NWS warnings — wind gusts up to 50 mph

“WHAT...Periods of moderate to heavy snow and blowing snow and mixed precipitation. Winds gusting 30 to 50 mph. WHERE...Northern Big Horn, Southern Big Horn, and Treasure. WHEN...Until 6 AM MDT Sunday. IMPACTS...Areas of blowing snow will significantly reduce visibility down to a half mile at times this evening, creating hazardous travel conditions along I-90 south of Lodge Grass.”

NWS severe weather mention · Big Horn County

“WHAT...Periods of moderate to heavy snow and blowing snow and mixed precipitation. Winds gusting 30 to 50 mph. WHERE...Northern Big Horn, Southern Big Horn, and Treasure. WHEN...Until 6 AM MDT Sunday. IMPACTS...Areas of blowing snow will significantly reduce visibility down to a half mile at times this evening, creating hazardous travel conditions along I-90 south of Lodge Grass.”

NWS severe weather mention · Big Horn County

Thursday, March 12, 2026

6 NWS warnings — wind gusts up to 75 mph

“WHAT...West winds with gusts of 55 to 75 mph expected. Locally higher gusts are possible. WHERE...Portions of central, south central, and southeast Montana. WHEN...Until 9 PM MDT this evening. IMPACTS...Extreme wind gusts could blow down trees and power lines. Power outages are possible. Travel could be difficult for high profile vehicles.”

NWS severe weather mention · Big Horn County

“WHAT...West winds with gusts of 50 to 70 mph expected. Locally higher gusts are possible. WHERE...In Montana, Bighorn Canyon, Red Lodge Foothills, and Southern Big Horn. In Wyoming, Sheridan Foothills. WHEN...Until 9 PM MDT this evening. IMPACTS...Extreme wind gusts could blow down trees and power lines. Power outages are possible. Travel could be difficult for high profile vehicles.”

NWS severe weather mention · Big Horn County

Wednesday, March 11, 2026

6 NWS warnings — wind gusts up to 70 mph

“WHAT...West winds with gusts of 50 to 70 mph possible. Locally higher gusts are possible. WHERE...Portions of central, south central, and southeast Montana. WHEN...From 6 AM to 9 PM MDT Thursday. IMPACTS...Extreme wind gusts could blow down trees and power lines. Power outages are possible. Travel could be difficult for high profile vehicles. Any sparked fires in dry grasses will spread rapidly.”

NWS severe weather mention · Big Horn County

“WHAT...West winds with gusts of 50 to 70 mph possible. Locally higher gusts are possible. WHERE...Portions of central, south central, and southeast Montana. WHEN...From 6 AM to 9 PM MDT Thursday. IMPACTS...Extreme wind gusts could blow down trees and power lines. Power outages are possible. Travel could be difficult for high profile vehicles. Any sparked fires in dry grasses will spread rapidly.”

NWS severe weather mention · Big Horn County

Tuesday, March 10, 2026

4 NWS warnings — wind gusts up to 70 mph

“WHAT...West winds with gusts of 50 to 70 mph possible. Locally higher gusts are possible. WHERE...Portions of central and south central Montana and north central Wyoming. WHEN...From late Wednesday night through Thursday evening. IMPACTS...Damaging winds could blow down trees and power lines. Power outages are possible. Travel could be difficult, especially for high profile vehicles.”

NWS severe weather mention · Big Horn County

“WHAT...West winds with gusts of 50 to 70 mph possible. Locally higher gusts are possible. WHERE...Portions of central and south central Montana and north central Wyoming. WHEN...From late Wednesday night through Thursday evening. IMPACTS...Damaging winds could blow down trees and power lines. Power outages are possible. Travel could be difficult, especially for high profile vehicles.”

NWS severe weather mention · Big Horn County

Monday, February 23, 2026

2 NWS warnings — wind gusts up to 60 mph

“WHAT...West winds 30 to 40 mph with gusts up to 60 mph possible. WHERE...In Montana, Bighorn Canyon and Southern Big Horn. In Wyoming, Sheridan Foothills. WHEN...From 8 PM MST this evening through Tuesday morning. IMPACTS...Travel could be difficult, especially for high profile vehicles. Expect crosswinds to be sudden and erratic.”

NWS severe weather mention · Big Horn County

“WHAT...Southwest to west winds gusting 40 to 60 mph possible. WHERE...In Montana, Bighorn Canyon and Southern Big Horn. In Wyoming, Sheridan Foothills. WHEN...From this evening through Tuesday morning. IMPACTS...Travel could be difficult, especially for high profile vehicles. Expect crosswinds to be sudden and erratic.”

NWS severe weather mention · Big Horn County

Tuesday, February 17, 2026

5 NWS warnings — wind gusts up to 70 mph

“WHAT...West wind gusts 50 to 70 mph. WHERE...In Montana, Bighorn Canyon, Pryor/Northern Bighorn Mountains, Red Lodge Foothills, Southeastern Carbon, and Southern Big Horn. In Wyoming, Northeast Bighorn Mountains and Sheridan Foothills. WHEN...Until 8 PM MST this evening. IMPACTS...Travel will be difficult, especially for high profile vehicles.”

NWS severe weather mention · Big Horn County

“WHAT...Southwest winds gusting 50 to 70 mph. WHERE...Portions of south central Montana and north central Wyoming. WHEN...Until 8 PM MST this evening. IMPACTS...Travel will be difficult, especially for high profile vehicles. Damaging winds may blow down trees and power lines, and power outages are possible. Warm and dry conditions could cause rapid fire spread in wildland grasses.”

NWS severe weather mention · Big Horn County

Monday, February 16, 2026

5 NWS warnings — wind gusts up to 70 mph

“WHAT...Southwest winds gusting 50 to 70 mph expected. WHERE...Portions of south central Montana and north central Wyoming. WHEN...Until 8 PM MST Tuesday. IMPACTS...Travel will be difficult, especially for high profile vehicles. Damaging winds may blow down trees and power lines, and power outages are possible. Warm and dry conditions could cause rapid fire spread.”

NWS severe weather mention · Big Horn County

“WHAT...Southwest winds gusts up to 70 mph expected. WHERE...Portions of south central Montana and north central Wyoming. WHEN...From 11 PM this evening to 8 PM MST Tuesday. IMPACTS...Damaging winds will blow down trees and power lines. Scattered power outages are expected. Travel will be difficult, especially for high profile vehicles. Warm and dry conditions could cause rapid fire spread.”

NWS severe weather mention · Big Horn County

Thursday, January 15, 2026

3 NWS warnings — wind gusts up to 60 mph

NEXRAD radar during the Thursday, January 15, 2026 storm activity in Big Horn County, Montana
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“WHAT...Northwest winds gusting 40 to 60 mph. WHERE...In Montana, Southern Big Horn. In Wyoming, Sheridan Foothills. WHEN...Until 5 PM MST Friday. IMPACTS...Damaging winds could blow down trees and power lines resulting in power outages. Travel will be difficult, especially for high profile vehicles. This includes travel along Interstate 90.”

NWS severe weather mention · Big Horn County

“WHAT...Northwest winds gusting 40 to 60 mph. WHERE...Portions of central, south central, and southeast Montana. WHEN...Until 5 PM MST Friday. IMPACTS...Damaging winds could blow down trees and power lines resulting in power outages. Travel will be difficult, especially for high profile vehicles.”

NWS severe weather mention · Big Horn County

Wednesday, January 7, 2026

3 NWS warnings — wind gusts up to 55 mph

“At 1232 PM MST, Doppler radar was tracking a line of showers extending from 13 miles north of Ballantine to near Laurel, or extending from 32 miles southeast of Roundup to 16 miles southwest of Billings, moving southeast at 40 mph. Hazard: Wind gusts of 50 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

“At 1232 PM MST, Doppler radar was tracking a line of showers extending from 13 miles north of Ballantine to near Laurel, or extending from 32 miles southeast of Roundup to 16 miles southwest of Billings, moving southeast at 40 mph. Hazard: Wind gusts of 50 to 55 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Big Horn County

Friday, December 26, 2025

1 NWS warning — wind gusts up to 60 mph

“At 849 PM MST, Gusty southwest to west winds will affect the east side of the Bighorn Mountains through the remainder of the evening. Winds could be erratic, surging suddenly down the mountains. Strongest winds can be expected between now and midnight. Winds will gradually decrease overnight. Hazard: Wind gusts of 40 to 60 mph.”

NWS severe weather mention · Big Horn County

Friday, December 19, 2025

2 NWS warnings — wind gusts up to 65 mph

“WHAT...Southwest to west winds with gusts of 50 to 65 mph. Locally higher gusts possible. WHERE...In Montana, Bighorn Canyon and Southern Big Horn. In Wyoming, Sheridan Foothills. WHEN...Until 2 PM MST this afternoon. IMPACTS...Damaging winds could blow down trees and power lines. Travel will be difficult, especially for high profile vehicles. This includes travel on I-90 through Sheridan.”

NWS severe weather mention · Big Horn County

“WHAT...Southwest to west winds with gusts of 50 to 65 mph. WHERE...In Montana, Bighorn Canyon and Southern Big Horn. In Wyoming, Sheridan Foothills. WHEN...Until 2 PM MST this afternoon. IMPACTS...Damaging winds could blow down trees and power lines. Travel will be difficult, especially for high profile vehicles. This includes travel on I-90 through Sheridan.”

NWS severe weather mention · Big Horn County

Thursday, December 18, 2025

5 NWS warnings — wind gusts up to 65 mph

“WHAT...Southwest to west winds with gusts of 50 to 65 mph. WHERE...In Montana, Bighorn Canyon and Southern Big Horn. In Wyoming, Sheridan Foothills. WHEN...From 8 PM this evening to 2 PM MST Friday. IMPACTS...Damaging winds could blow down trees and power lines. Travel will be difficult, especially for high profile vehicles. This includes travel on I-90 through Sheridan.”

NWS severe weather mention · Big Horn County

“WHAT...Southwest to west winds with gusts of 50 to 65 mph possible. WHERE...In Montana, Bighorn Canyon and Southern Big Horn. In Wyoming, Sheridan Foothills. WHEN...From this evening through Friday afternoon. IMPACTS...Damaging winds could blow down trees and power lines. Travel could be difficult, especially for high profile vehicles. This includes travel on I-90 through Sheridan.”

NWS severe weather mention · Big Horn County

Wednesday, December 17, 2025

5 NWS warnings — wind gusts up to 75 mph

“WHAT...West winds gusting 60 to 75 mph occurring. WHERE...Portions of central and south central Montana. WHEN...Until 2 AM MST Thursday. IMPACTS...Damaging winds may blow down trees and power lines. Travel will be difficult, especially for high profile vehicles. Secure loose outdoor items. ADDITIONAL DETAILS...The highest gusts will be this afternoon and evening.”

NWS severe weather mention · Big Horn County

“WHAT...Northwest winds with gusts 60 to 70 mph occurring. WHERE...In Montana, Bighorn Canyon and Southern Big Horn. In Wyoming, Sheridan Foothills. WHEN...Until 2 AM MST Thursday. IMPACTS...Damaging winds may blow down trees and power lines. Travel will be difficult, especially for high profile vehicles. This includes travel on I-90 through Sheridan. Secure loose outdoor items.”

NWS severe weather mention · Big Horn County

Tuesday, December 16, 2025

7 NWS warnings — wind gusts up to 70 mph

NEXRAD radar during the Tuesday, December 16, 2025 storm activity in Big Horn County, Montana
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“WHAT...West winds gusting 60 to 70 mph expected. WHERE...Portions of central and south central Montana. WHEN...From 8 AM Wednesday to 2 AM MST Thursday. IMPACTS...Damaging winds may blow down trees and power lines. Travel will be difficult, especially for high profile vehicles. Secure loose outdoor items. ADDITIONAL DETAILS...Highest gusts will be in the afternoon and evening.”

NWS severe weather mention · Big Horn County

“WHAT...Southwest to west winds gusts 55 to 70 mph expected. WHERE...In Montana, Bighorn Canyon and Southern Big Horn. In Wyoming, Sheridan Foothills. WHEN...From 2 AM Wednesday to 2 AM MST Thursday. IMPACTS...Damaging winds may blow down trees and power lines. Travel will be difficult, especially for high profile vehicles. This includes travel on I-90 through Sheridan. Secure loose outdoor items.”

NWS severe weather mention · Big Horn County

Today's severe weather outlook

Storm Prediction Center Day 1 convective outlook — national severe weather risk map for today
Storm Prediction Center Day 1 convective outlook: categorical severe weather risk for today, updated several times daily. Source: NOAA/NWS Storm Prediction Center.

Common questions

When was the last severe storm in Big Horn County, MT?

The most recent recorded event was in September 2026. Official NWS and SPC records show 188 severe weather events in Big Horn County over the last 12 months. Exact dates and locations for recent storms are available in the app with a free account.

Did it hail in Big Horn County recently?

Yes — 92 hail reports in the last 12 months, with hail up to 1" recorded. The hail map above shows where reports clustered; the storm log lists each day.

How do I see hail history for a specific address in Big Horn County?

Create a free IDOLCheck account and run an address check. It shows verified storm reports and official NWS warning boundaries around any specific property, including the most recent 30 days — county-level pages like this one only tell part of the story.

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Proudly AI-powered. Honestly sourced. IDOLCheck is built by HailyAI. Every storm event, magnitude, radar snapshot, and date on this page is deterministic — retrieved directly from official NOAA, National Weather Service (NWS), and Storm Prediction Center (SPC) storm records through our HailyDB engine and displayed exactly as reported. Quoted warning and report text is always attributed to its official source. Where the surrounding copy is not a direct quote, it was generated with AI assistance from that same verified storm data and reviewed and approved by humans before publication. AI organizes and presents the record — it never invents storm data.
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