Union County Storm Activity
Wind, hail, and tornado activity from official NOAA sources (NWS & SPC) · Last 12 months · Updated Sep 12, 2026
Has it hailed in Union County, Ohio recently? Official National Weather Service (NWS) and Storm Prediction Center (SPC) records say yes: 44 hail reports with hail up to 1.5", among 87 severe weather events logged here in the last 12 months, together with 43 high-wind reports with gusts up to 65 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.
What the radar showed
Last 30 days in Union County
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.
Tuesday, August 11, 2026
1 NWS warning — hail up to 0.5"
“At 834 AM EDT, a rapidly developing thunderstorm was located near Chippewa Park, moving east at 45 mph. Hazard: Wind gusts up to 50 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation. Locations impacted include...”
- Hail 0.5" Union County NWS severe weather mention
Monday, August 10, 2026
6 NWS warnings — hail up to 0.88", wind gusts up to 50 mph
“At 1118 PM EDT, a strong thunderstorm was located near New California, moving southeast at 35 mph. Hazard: Wind gusts up to 50 mph and very heavy rain. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Visibility will be poor and hydroplaning is possible. Locations impacted include...”
“At 328 PM EDT, a strong thunderstorm was located near Marysville, moving east at 30 mph. Hazard: Wind gusts up to 50 mph, nickel size hail, frequent cloud-to-ground lightning, and very heavy rain. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation. Lightning can cause serious injury or death.”
- Wind 50 mph Union County NWS severe weather mention
- Hail 0.88" Union County NWS severe weather mention
- Hail 0.88" Union County NWS severe weather mention
- Hail 0.75" Union County NWS severe weather mention
- Hail 0.25" Union County NWS severe weather mention
- Hail 0.25" Union County NWS severe weather mention
Sunday, August 9, 2026
1 NWS warning — hail up to 0.25"
“At 923 PM EDT, a strong thunderstorm was located 7 miles northeast of Mechanicsburg, moving east at 35 mph. Hazard: Wind gusts up to 45 mph and pea size hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation. Locations impacted include...”
- Hail 0.25" Union County NWS severe weather mention
Tuesday, July 28, 2026
1 NWS warning — hail up to 0.75"
“At 245 AM EDT, a strong thunderstorm was located near Bellefontaine, moving southeast at 45 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. Hail may cause minor damage to vegetation. Locations impacted include...”
- Hail 0.75" Union County NWS severe weather mention
Monday, July 27, 2026
1 NWS warning — wind gusts up to 50 mph
“At 630 PM EDT, strong thunderstorms were located along a line extending from near West Alexandria to Camden to 6 miles north of Brookville, 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...”
- Wind 50 mph Union County NWS severe weather mention
Tuesday, July 21, 2026
2 NWS warnings — hail up to 0.25"
“At 935 AM EDT, strong thunderstorms were located along a line extending from Waldo to near Marysville, moving southeast at 60 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. Hail may cause minor damage to vegetation. Locations impacted include...”
“At 925 AM EDT, a strong thunderstorm was located over Mechanicsburg, moving east at 55 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. Hail may cause minor damage to vegetation. Locations impacted include...”
- Hail 0.25" Union County NWS severe weather mention
- Hail 0.25" Union County NWS severe weather mention
Saturday, July 18, 2026
1 NWS warning — wind gusts up to 50 mph
“At 619 PM EDT, strong thunderstorms were located along a line extending from Urbana to New California, moving southeast 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...”
- Wind 50 mph Union County NWS severe weather mention
Saturday, July 4, 2026
3 NWS warnings — hail up to 0.25"
“At 403 PM EDT, a strong thunderstorm was located near Delaware, moving east 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. Hail may cause minor damage to vegetation. Locations impacted include...”
“At 339 PM EDT, a strong thunderstorm was located over Richwood, moving east 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. Hail may cause minor damage to vegetation. Locations impacted include...”
- Hail 0.25" Union County NWS severe weather mention
- Hail 0.25" Union County NWS severe weather mention
- Hail 0.25" Union County NWS severe weather mention
Friday, July 3, 2026
1 NWS warning — wind gusts up to 50 mph
“At 457 PM EDT, a strong thunderstorm was located near Abington, moving northeast 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...”
- Wind 50 mph Union County NWS severe weather mention
Tuesday, June 16, 2026
1 NWS warning — hail up to 0.25"
“At 951 PM EDT, a strong thunderstorm was located near Richwood, moving east at 30 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. Hail may cause minor damage to vegetation. Locations impacted include...”
- Hail 0.25" Union County NWS severe weather mention
Sunday, June 14, 2026
2 NWS warnings — wind gusts up to 50 mph
“At 319 PM EDT, strong thunderstorms were located along a line extending from Marysville to near Springfield, moving east at 45 mph. Hazard: Wind gusts up to 50 mph and very heavy rain. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Visibility will be poor and hydroplaning is possible. Locations impacted include...”
“At 248 PM EDT, strong thunderstorms were located along a line extending from Bellefontaine to near West Milton, moving east at 50 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Springfield, Troy, Piqua, Bellefontaine, Urbana, Tipp City, New Carlisle, West Milton, Northridge, St.”
- Wind 50 mph Union County NWS severe weather mention
- Wind 50 mph Union County NWS severe weather mention
Friday, June 12, 2026
2 NWS warnings — wind gusts up to 50 mph
“At 1254 AM EDT, strong thunderstorms were located along a line extending from near Richwood to near Cedarville, 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...”
“At 1216 AM EDT, strong thunderstorms were located along a line extending from near Chippewa Park to West Milton, moving east at 55 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Wind 50 mph Union County NWS severe weather mention
- Wind 50 mph Union County NWS severe weather mention
Saturday, June 6, 2026
3 NWS warnings — hail up to 0.5"
“At 1141 AM EDT, a strong thunderstorm was located over Delaware, moving east at 50 mph. Hazard: Wind gusts up to 50 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation. Locations impacted include...”
“At 1112 AM EDT, strong thunderstorms were located along a line extending from 7 miles north of West Mansfield to near Urbana, moving east at 45 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. Hail may cause minor damage to vegetation. Locations impacted include...”
- Hail 0.5" Union County NWS severe weather mention
- Hail 0.25" Union County NWS severe weather mention
- Hail 0.25" Union County NWS severe weather mention
Tuesday, May 19, 2026
4 NWS warnings — hail up to 0.5", wind gusts up to 50 mph
“At 741 PM EDT, a strong thunderstorm was located near Urbana, moving northeast at 25 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Springfield, Marysville, Urbana, New Carlisle, Northridge, St.”
“At 658 PM EDT, a strong thunderstorm was located near Oldenburg, moving northeast at 35 mph. Hazard: Wind gusts up to 45 mph, half inch hail, and very heavy rain. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation. Visibility will be poor and hydroplaning is possible. Locations impacted include...”
- Wind 50 mph Union County NWS severe weather mention
- Hail 0.5" Union County NWS severe weather mention
- Hail 0.25" Union County NWS severe weather mention
- Hail 0.25" Union County NWS severe weather mention
Monday, May 18, 2026
2 NWS warnings — hail up to 0.25"
“At 623 PM EDT, strong thunderstorms were located along a line extending from near Hagerstown to 6 miles southeast of Connersville, moving east at 40 mph. Hazard: Wind gusts up to 50 mph, pea size hail, frequent cloud-to-ground lightning, and very heavy rain. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation.”
“At 538 PM EDT, strong thunderstorms were located along a line extending from near Arlington to near Sidney, moving east at 25 mph. Hazard: Wind gusts up to 40 mph, pea size hail, and very heavy rain. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation. Visibility will be poor and hydroplaning is possible.”
- Hail 0.25" Union County NWS severe weather mention
- Hail 0.25" Union County NWS severe weather mention
Saturday, May 16, 2026
3 NWS warnings — hail up to 0.88"
“At 902 AM EDT, a strong thunderstorm was located near Marysville, moving east at 50 mph. Hazard: Nickel size hail. Impact: Hail may cause minor damage to vegetation. Locations impacted include...”
“At 841 AM EDT, a strong thunderstorm was located near Mechanicsburg, moving northeast at 35 mph. Hazard: Nickel size hail. Impact: Hail may cause minor damage to vegetation. Locations impacted include...”
- Hail 0.88" Union County NWS severe weather mention
- Hail 0.88" Union County NWS severe weather mention
- Hail 0.88" Union County NWS severe weather mention
Tuesday, April 28, 2026
2 NWS warnings — wind gusts up to 50 mph
“At 121 AM EDT, strong thunderstorms were located along a line extending from near Urbana to near Beavercreek, moving east at 40 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
“Wind gusts of 35 to 50 MPH will be possible over the next few hours. These winds will occur separately from any thunderstorms. Winds of this magnitude may damage small tree limbs and make driving difficult, especially for high profile vehicles.”
- Wind 50 mph Union County NWS severe weather mention
- Wind 50 mph Union County NWS severe weather mention
Monday, April 27, 2026
1 NWS warning — wind gusts up to 50 mph
“Wind gusts of 35 to 50 MPH will be possible over the next few hours. These winds will occur separately from any thunderstorms. Winds of this magnitude may damage small tree limbs and make driving difficult, especially for high profile vehicles.”
- Wind 50 mph Union County NWS severe weather mention
Wednesday, April 22, 2026
3 NWS warnings — hail up to 0.5"
“At 642 PM EDT, a strong thunderstorm was located near Bellefontaine, moving east at 20 mph. Hazard: Wind gusts up to 40 mph, half inch hail, and very heavy rain. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation. Visibility will be poor and hydroplaning is possible. Locations impacted include...”
“At 629 PM EDT, a strong thunderstorm was located near Kenton, moving east at 20 mph. Hazard: Wind gusts up to 40 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation. Locations impacted include... Kenton, Hepburn, Grant, Essex, Mentzer, and Pfeiffer.”
- Hail 0.5" Union County NWS severe weather mention
- Hail 0.5" Union County NWS severe weather mention
- Hail 0.5" Union County NWS severe weather mention
Monday, April 13, 2026
1 SPC verified storm report
“A tree was downed across E Liberty Road near State Route 347. (ILN)”
- Wind Unknown 4 SSE West Mansfield SPC verified report
Saturday, April 4, 2026
3 NWS warnings — wind gusts up to 50 mph
“Wind gusts of 40 to 50 mph will be possible ahead of and along a cold front, through 8 pm. Southerly wind gusts will become westerly as the front passes. Driving may be difficult for high profile vehicles. Power outages from downed branches are possible.”
“At 454 PM EDT, a strong thunderstorm was located near Richwood, moving northeast 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... Richwood, Radnor, Magnetic Springs, Delaware State Park, and Pharisburg. If outdoors, consider seeking shelter inside a sturdy building.”
- Wind 50 mph Union County NWS severe weather mention
- Wind 50 mph Union County NWS severe weather mention
- Wind 50 mph Union County NWS severe weather mention
Friday, April 3, 2026
1 NWS warning — hail up to 0.5"
“At 845 PM EDT, a strong thunderstorm was located near La Rue, moving east at 25 mph. Hazard: Wind gusts up to 40 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to vegetation. Locations impacted include... Mount Victory, Hepburn, and Pfeiffer. If outdoors, consider seeking shelter inside a sturdy building.”
- Hail 0.5" Union County NWS severe weather mention
Thursday, March 26, 2026
2 NWS warnings — hail up to 0.5", wind gusts up to 50 mph
“At 1050 PM EDT, strong thunderstorms were located along a line extending from near Prospect to near North Lewisburg to near Enon, moving east at 60 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
“At 940 PM EDT, strong thunderstorms were located along a line extending from New California to near Choctaw Lake to near Yellow Springs, moving southeast at 60 mph. Hazard: Wind gusts up to 50 mph and half inch hail. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Hail may cause minor damage to outdoor objects. Locations impacted include...”
- Wind 50 mph Union County NWS severe weather mention
- Hail 0.5" Union County NWS severe weather mention
Wednesday, March 25, 2026
3 SPC verified storm reports
“Lines down on 347 and Jackson. Time estimated from RADAR. (ILN)”
“Utility pole down on 12000 Sanders Road. Time estimated from RADAR. (ILN)”
- Wind Unknown 1 SSW Magnetic Springs SPC verified report
- Wind Unknown 5 N Richwood SPC verified report
- Wind Unknown 7 NW Richwood SPC verified report
Sunday, March 22, 2026
3 NWS warnings — hail up to 0.75"
“At 1056 PM EDT, strong thunderstorms were located along a line extending from near Liberty to 8 miles northeast of North Vernon, moving east at 45 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. Hail may cause minor damage to vegetation. Locations impacted include...”
“At 1023 PM EDT, strong thunderstorms were located along a line extending from 6 miles north of Hagerstown to 9 miles southwest of Greensburg, moving east at 45 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. Hail may cause minor damage to vegetation. Locations impacted include...”
- Hail 0.75" Union County NWS severe weather mention
- Hail 0.75" Union County NWS severe weather mention
- Hail 0.75" Union County NWS severe weather mention
Saturday, March 21, 2026
2 SPC verified storm reports — hail up to 1.5"
- Hail 1.5" 2 E Unionville Center SPC verified report
- Hail 1.25" 15 W Westerville SPC verified report
Sunday, March 15, 2026
4 NWS warnings — wind gusts up to 60 mph
“WHAT...South winds 20 to 25 mph with gusts up to 60 mph. WHERE...Portions of southeast Indiana, northern Kentucky, and central, southwest, and west central Ohio. WHEN...Until 8 AM EDT Monday. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”
“WHAT...South winds 20 to 30 mph with gusts up to 60 mph. WHERE...Portions of east central and southeast Indiana and west central Ohio. WHEN...Until 8 AM EDT Monday. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”
- Wind 60 mph Union County NWS severe weather mention
- Wind 60 mph Union County NWS severe weather mention
- Wind 50 mph Union County NWS severe weather mention
- Wind 50 mph Union County NWS severe weather mention
Saturday, March 14, 2026
1 NWS warning — wind gusts up to 50 mph
“WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected. WHERE...Portions of east central and southeast Indiana and west central Ohio. WHEN...From 11 AM Sunday to 8 AM EDT Monday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 50 mph Union County NWS severe weather mention
Friday, March 13, 2026
4 NWS warnings — wind gusts up to 65 mph
“WHAT...West winds 25 to 35 mph with gusts up to 65 mph. WHERE...Portions of east central Indiana and central, southwest, and west central Ohio. WHEN...Until 8 PM EDT this evening. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”
“WHAT...West winds 25 to 35 mph with gusts up to 65 mph. WHERE...Portions of east central Indiana and central, southwest, and west central Ohio. WHEN...Until 8 PM EDT this evening. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”
- Wind 65 mph Union County NWS severe weather mention
- Wind 65 mph Union County NWS severe weather mention
- Wind 60 mph Union County NWS severe weather mention
- Wind 60 mph Union County NWS severe weather mention
Thursday, March 12, 2026
6 NWS warnings — wind gusts up to 60 mph
“WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph expected. WHERE...In Indiana, Fayette, Union, and Wayne Counties. In Ohio, Franklin, Licking, Madison, Clark, Greene, Montgomery, and Preble Counties. WHEN...From 5 AM to 8 PM EDT Friday. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected.”
“WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph expected. WHERE...Delaware, Union, Auglaize, Champaign, Darke, Hardin, Logan, Mercer, Miami, and Shelby Counties. WHEN...From 5 AM to 8 PM EDT Friday. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”
- Wind 60 mph Union County NWS severe weather mention
- Wind 60 mph Union County NWS severe weather mention
- Wind 60 mph Union County NWS severe weather mention
- Wind 60 mph Union County NWS severe weather mention
- Wind 60 mph Union County NWS severe weather mention
- Wind 50 mph Union County NWS severe weather mention
Wednesday, March 11, 2026
1 SPC verified storm report · 1 NWS warning — wind gusts up to 60 mph
“WHAT...Southwest winds 15 to 25 mph with gusts up to 50 mph expected. WHERE...Portions of east central and southeast Indiana, northeast and northern Kentucky, and central, south central, southwest, and west central Ohio. WHEN...Until 7 PM EDT this evening. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 60 mph 1 SE Marysville SPC verified report
- Wind 50 mph Union County NWS severe weather mention
Tuesday, March 10, 2026
1 NWS warning — wind gusts up to 50 mph
“WHAT...Southwest winds 15 to 25 mph with gusts up to 50 mph expected. WHERE...Portions of east central and southeast Indiana, northeast and northern Kentucky, and central, south central, southwest, and west central Ohio. WHEN...From 8 AM to 7 PM EDT Wednesday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 50 mph Union County NWS severe weather mention
Friday, February 20, 2026
2 NWS warnings — wind gusts up to 50 mph
“WHAT...West winds 20 to 30 mph with gusts up to 50 mph. WHERE...Portions of east central Indiana and central and west central Ohio. WHEN...Until 6 PM EST this evening. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
“WHAT...Southwest winds 20 to 30 mph with gusts up to 45 to 50 mph expected. WHERE...Portions of east central Indiana and central and west central Ohio. WHEN...Until 6 PM EST this evening. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 50 mph Union County NWS severe weather mention
- Wind 50 mph Union County NWS severe weather mention
Friday, January 9, 2026
2 NWS warnings — wind gusts up to 50 mph
“At 738 AM EST, strong thunderstorms were located along a line extending from near Ashley to near South Charleston, 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...”
“At 708 AM EST, strong thunderstorms were located along a line extending from Urbana to Fairborn, moving east at 50 mph. Hazard: Wind gusts up to 50 mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”
- Wind 50 mph Union County NWS severe weather mention
- Wind 50 mph Union County NWS severe weather mention
Wednesday, November 26, 2025
1 NWS warning — wind gusts up to 50 mph
“WHAT...West winds 20 to 30 mph with gusts up to 45 to 50 mph expected. WHERE...Portions of east central and southeast Indiana and central, southwest, and west central Ohio. WHEN...Until 10 PM EST this evening. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”
- Wind 50 mph Union County NWS severe weather mention
Today's severe weather outlook
Common questions
When was the last severe storm in Union County, OH?
The most recent recorded event was in September 2026. Official NWS and SPC records show 87 severe weather events in Union County over the last 12 months. Exact dates and locations for recent storms are available in the app with a free account.
Has there been hail in Union County recently?
Yes — 44 hail reports in the last 12 months, with hail up to 1.5" recorded.
How do I check whether a specific address was affected?
Create a free IDOLCheck account and run an address check. It shows verified storm reports and official NWS warning boundaries around any specific property — county-level pages like this one only tell part of the story.