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Storm ActivityIowa Storm ActivityCass County, IA
Iowa · Official NOAA Storm Data

Cass County Hail Map & Storm Reports

Hail, wind, and tornado reports from official NOAA sources (NWS & SPC) · Last 12 months · Updated Sep 13, 2026

Has it hailed in Cass County, Iowa recently? Official National Weather Service (NWS) and Storm Prediction Center (SPC) records say yes: 7 hail reports with hail up to 1.5", among 38 severe weather events logged here in the last 12 months, together with 31 high-wind reports with gusts up to 70 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 Cass County, Iowa showing the county boundary and surrounding cities
Cass County, Iowa. Map © Mapbox © OpenStreetMap · County boundary: US Census Bureau.

Cass County hail map

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

38
Events (12 mo)
7
Hail
31
Wind
0
Tornado
1.5"
Max hail
70
Max wind (mph)
September 2026
Most recent

What the radar showed

Radar snapshot during the Jun 4, 2026 hail event near 3 S Massena, Cass County, Iowa, with NWS warning polygons
NEXRAD radar at the moment of the Jun 4, 2026 hail event (1.5") near 3 S Massena. 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 Cass County

Current NEXRAD radar over Cass County, Iowa with recent storm report locations
Current radar over the Cass 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 · 1 SPC verified report — hail to 1" Exact dates & locations in app →
August 2026 1 storm day · 1 NWS warning — 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.

Saturday, August 8, 2026

1 NWS warning — wind gusts up to 50 mph

NEXRAD radar during the Saturday, August 8, 2026 storm activity in Cass County, Iowa
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 208 PM CDT, A cluster of strong thunderstorms were reported along a line extending from near Eppley Airfield to 5 miles southwest of Offutt AFB to 3 miles east of Murdock. Movement was southeast at 30 mph. Hazard: Wind gusts up to 50 mph. mph. Impact: Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include...”

NWS severe weather mention · Cass County

Saturday, June 13, 2026

1 NWS warning — hail up to 0.5"

NEXRAD radar during the Saturday, June 13, 2026 storm activity in Cass County, Iowa
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 806 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 6 miles south of Hooper to near Woodcliff to 2 miles southwest of Leshara to near Ithaca. Movement was 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. Minor hail damage to vegetation is possible.”

NWS severe weather mention · Cass County

Wednesday, June 10, 2026

4 SPC verified storm reports — wind gusts up to 65 mph

NEXRAD radar during the Wednesday, June 10, 2026 storm activity in Cass County, Iowa
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“Measured from personal weather station. (DMX)”

SPC verified report · Griswold

“Delayed report - time estimated by radar. Received photo from trained spotter of tree limb down. (DMX)”

SPC verified report · 3 WNW Anita

Thursday, June 4, 2026

3 SPC verified storm reports — hail up to 1.5", wind gusts up to 65 mph

NEXRAD radar during the Thursday, June 4, 2026 storm activity in Cass County, Iowa
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

“Reports of power flashes and ping pong ball sized hail south of Massena. (DMX)”

SPC verified report · 3 S Massena

“Measured from personal weather station. (DMX)”

SPC verified report · Griswold

Thursday, April 9, 2026

1 NWS warning — hail up to 0.75"

NEXRAD radar during the Thursday, April 9, 2026 storm activity in Cass County, Iowa
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 644 PM CDT, Doppler radar was tracking a strong thunderstorm over Grant, or 15 miles northwest of Corning, moving east at 40 mph. Hazard: Penny size hail and heavy rainfall of one to two inches. Impact: Minor hail damage to vegetation is possible. Ponding of water on roadways, low visibilities, and rises in small streams and creeks. Locations impacted include...”

NWS severe weather mention · Cass County

Sunday, March 29, 2026

1 SPC verified storm report — hail up to 1"

NEXRAD radar during the Sunday, March 29, 2026 storm activity in Cass County, Iowa
Radar during the most significant activity of the day. Imagery courtesy of the Iowa Environmental Mesonet, Iowa State University; radar data via NOAA/NWS.

Saturday, March 28, 2026

1 NWS warning — wind gusts up to 50 mph

“AFFECTED AREA...Knox, Cedar, Thurston, Antelope, Pierce, Wayne, Boone, Madison, Stanton, Cuming, Burt, Platte, Monona, Colfax, Dodge, Washington, Butler, Saunders, Douglas, Sarpy, Harrison, Shelby, Seward, Lancaster, Cass, Otoe, Pottawattamie, Saline, Mills, Montgomery, Jefferson, Gage, Fremont, Johnson, Page, Nemaha, Pawnee, and Richardson Counties. TIMING...From 9 AM to 10 PM CDT this evening.”

NWS severe weather mention · Cass County

Friday, March 27, 2026

1 NWS warning — wind gusts up to 55 mph

“The National Weather Service in Omaha/Valley has cancelled the Red Flag Warning. AFFECTED AREA...Thurston, Boone, Madison, Stanton, Cuming, Burt, Platte, Monona, Colfax, Dodge, Washington, Butler, Saunders, Douglas, Sarpy, Harrison, Shelby, Seward, Lancaster, Cass, Otoe, Pottawattamie, Saline, Mills, Montgomery, Jefferson, Gage, Fremont, Johnson, Page, Nemaha, Pawnee, and Richardson Counties.”

NWS severe weather mention · Cass County

Sunday, March 15, 2026

6 NWS warnings — wind gusts up to 65 mph

“...BLIZZARD CONDITIONS DEVELOPING AND PERSISTING TONIGHT... .A significant winter storm will move across the area through tonight. Widespread snow will fall across Iowa with higher amounts of 6+ inches possible north and east. Winds will gust 55 to 65+ mph, resulting in significant drifting of snow and visibility reductions to white-out conditions at times.”

NWS severe weather mention · Cass County

“WHAT...Northwest winds 30 to 40 mph with gusts up to 55 to 65 mph expected. The highest wind gusts will be late this afternoon and this evening. WHERE...Portions of central, north central, northeast, northwest, south central, southeast, southwest, and west central Iowa. WHEN...Until 4 AM CDT Monday. IMPACTS...Damaging winds could blow down trees and power lines. Power outages are possible.”

NWS severe weather mention · Cass County

Saturday, March 14, 2026

4 NWS warnings — wind gusts up to 70 mph

“WHAT...Northwest winds 35 to 45 mph with gusts up to 65 mph expected. A few isolated gusts to 70 mph are possible. WHERE...Portions of eastern Nebraska and west-central into southwest Iowa. WHEN...From 7 AM Sunday to 1 AM CDT Monday. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages may occur. Travel will be difficult, especially for high profile vehicles.”

NWS severe weather mention · Cass County

“WHAT...Northwest winds 35 to 45 mph with gusts up to 65 mph expected. A few gusts to 70 mph possible. WHERE...Portions of southwest and west central Iowa and east central, northeast, and southeast Nebraska. WHEN...From 7 AM Sunday to 1 AM CDT Monday. IMPACTS...Very strong winds may cause damage to trees and isolated to scattered power outages.”

NWS severe weather mention · Cass County

Friday, March 13, 2026

2 NWS warnings — wind gusts up to 60 mph

“WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph possible. WHERE...Portions of southwest and west central Iowa and east central, northeast, and southeast Nebraska. WHEN...From Sunday morning through late Sunday night. IMPACTS...Damaging winds could blow down trees and power lines. Some power outages are possible. Travel could be difficult, especially for high profile vehicles.”

NWS severe weather mention · Cass County

“WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph possible. WHERE...Portions of southwest and west central Iowa and east central, northeast, and southeast Nebraska. WHEN...From Sunday morning through late Sunday night. IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles.”

NWS severe weather mention · Cass County

Thursday, March 12, 2026

7 NWS warnings — wind gusts up to 60 mph

“AFFECTED AREA...Knox, Cedar, Thurston, Antelope, Pierce, Wayne, Boone, Madison, Stanton, Cuming, Burt, Platte, Monona, Colfax, Dodge, Washington, Butler, Saunders, Douglas, Sarpy, Harrison, Shelby, Seward, Lancaster, Cass, Otoe, Pottawattamie, Saline, Mills, Montgomery, Jefferson, Gage, Fremont, Johnson, Page, Nemaha, Pawnee, and Richardson Counties. TIMING...Until midnight CDT tonight.”

NWS severe weather mention · Cass County

“AFFECTED AREA...Knox, Cedar, Thurston, Antelope, Pierce, Wayne, Boone, Madison, Stanton, Cuming, Burt, Platte, Monona, Colfax, Dodge, Washington, Butler, Saunders, Douglas, Sarpy, Harrison, Shelby, Seward, Lancaster, Cass, Otoe, Pottawattamie, Saline, Mills, Montgomery, Jefferson, Gage, Fremont, Johnson, Page, Nemaha, Pawnee, and Richardson Counties. TIMING...Until 9 PM CDT this evening.”

NWS severe weather mention · Cass County

Wednesday, March 11, 2026

1 NWS warning — wind gusts up to 60 mph

“WHAT...Northwest winds 20 to 30 mph with gusts up to 60 mph possible. WHERE...In Iowa, Mills, Montgomery, and Pottawattamie Counties. In Nebraska, Butler, Douglas, Sarpy, Saunders, Cass, Lancaster, and Seward Counties. WHEN...From Thursday evening through late Thursday night. IMPACTS...Damaging winds could blow down trees and power lines. Some power outages are possible.”

NWS severe weather mention · Cass County

Wednesday, February 18, 2026

1 NWS warning — wind gusts up to 50 mph

“...Critical Fire Weather Conditions Continue This Afternoon... .Strong and gusty west winds combined with very low relative humidity and cured fuels are resulting in conditions conducive for rapid fire growth. AFFECTED AREA...All of central Iowa. WIND...West wind 25 to 35 mph with gusts up to 50 mph. HUMIDITY...Minimum relative humidity values of 15 to 25%.”

NWS severe weather mention · Cass County

Tuesday, February 17, 2026

1 NWS warning — wind gusts up to 50 mph

“...Critical Fire Weather Conditions are Expected Wednesday... .Strong and gusty west wind combined with very low relative humidity and cured fuels will lead to conditions conducive for very fast fire growth. The National Weather Service in Des Moines has issued a Red Flag Warning, which is in effect from 10 AM to 7 PM CST Wednesday. The Fire Weather Watch is no longer in effect.”

NWS severe weather mention · Cass County

Monday, November 17, 2025

1 NWS warning — hail up to 0.25"

NEXRAD radar during the Monday, November 17, 2025 storm activity in Cass County, Iowa
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 1129 PM CST, Doppler radar was tracking a strong thunderstorm near Coon Rapids, or 12 miles northwest of Guthrie Center, moving northeast at 45 mph. Hazard: Pea size hail. Impact: Minor hail damage to vegetation is possible. Locations impacted include...”

NWS severe weather mention · Cass 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 Cass County, IA?

The most recent recorded event was in September 2026. Official NWS and SPC records show 38 severe weather events in Cass 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 Cass County recently?

Yes — 7 hail reports in the last 12 months, with hail up to 1.5" 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 Cass 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 HailyAPI 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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