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Storm Activity›Iowa Storm Activity›Story County, IA
Iowa · Official NOAA Storm Data

Story County Hail Map & Storm Reports

Hail, wind, and tornado reports from official NOAA sources (NWS & SPC) · Last 12 months · Updated Nov 1, 2026

Story County, Iowa has recorded tornado activity: official National Weather Service (NWS) and Storm Prediction Center (SPC) records list 1 tornado report among 49 severe weather events here in the last 12 months, alongside 8 hail reports with hail up to 2.75" and 40 high-wind reports with gusts up to 72 mph. The most recent recorded storm activity was on Sep 14, 2026. This page updates daily: every event comes straight from official NOAA data — no estimates, no modeling, just the record.

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

Story County hail map

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

49
Events (12 mo)
8
Hail
40
Wind
1
Tornado
2.75"
Max hail
72
Max wind (mph)
Sep 14, 2026
Most recent

What the radar showed

Radar snapshot during the Apr 23, 2026 tornado event near 2 ENE Slater, Story County, Iowa, with NWS warning polygons
NEXRAD radar at the moment of the Apr 23, 2026 tornado event (Tornado) near 2 ENE Slater. 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.

Storm exposure for an address in Story County

Get a free report in your folder. A city is enough if you do not have a street.

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.

Monday, September 14, 2026

2 SPC verified storm reports · 1 NWS warning — hail up to 0.75"

NEXRAD radar during the Monday, September 14, 2026 storm activity in Story 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 1206 PM CDT, Doppler radar was tracking a strong thunderstorm over Boone, moving northeast at 55 mph. Hazard: Penny size hail. Impact: Minor hail damage to vegetation is possible. Locations impacted include... Boone, Story City, Roland, Gilbert, Boone Speedway, McCallsburg, Randall, Boone Municipal Airport, and Ledges State Park. This includes Interstate 35 between mile markers 120 and 131.”

NWS severe weather mention · Story County

“Received photos of downed trees and tree limbs around the Iowa State University campus. Time estimated from radar. (DMX)”

SPC verified report · 1 SW Ames

Monday, July 20, 2026

2 SPC verified storm reports — hail up to 2.75", wind gusts up to 69 mph

NEXRAD radar during the Monday, July 20, 2026 storm activity in Story 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 · 4 E Ames

Wednesday, June 17, 2026

2 SPC verified storm reports — wind gusts up to 60 mph

NEXRAD radar during the Wednesday, June 17, 2026 storm activity in Story 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.

“Delayed report. Photo of a downed tree near the Golden Loop on Iowa State Campus. (DMX)”

SPC verified report · 1 WNW Ames

Thursday, June 11, 2026

2 SPC verified storm reports — wind gusts up to 72 mph

NEXRAD radar during the Thursday, June 11, 2026 storm activity in Story 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.

“Delayed entry - measured from KAMW. (DMX)”

SPC verified report · 2 S Ames

“Delayed report - time estimated by radar. Received photos via email of tree damage in Nevada... IA. (DMX)”

SPC verified report · 1 E Nevada

Wednesday, June 10, 2026

1 NWS warning — wind gusts up to 55 mph

NEXRAD radar during the Wednesday, June 10, 2026 storm activity in Story 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 1028 AM CDT, trained weather spotters reported strong thunderstorms along a line extending from 7 miles north of Ogden to 4 miles south of Roland to near State Center. Movement was northeast at 30 mph. Hazard: Wind gusts up to 55 mph possible with storms. 50 to 55 mph. Weather stations also reporting wind gusts of 40 to 50 mph.”

NWS severe weather mention · Story County

Monday, May 18, 2026

1 NWS warning — wind gusts up to 55 mph

“WHAT...Gusty east to southeast winds will occur on the backside of the departing thunderstorms. Gusts of 40 to 55 mph are expected and may last up to an hour. WHERE...Much of Central, North Central and South Central Iowa. WHEN...During the pre-dawn hours this morning. IMPACTS...Unsecured outdoor objects may be blown around and smaller tree branches may break.”

NWS severe weather mention · Story County

Thursday, April 23, 2026

1 SPC verified storm report — 1 tornado report

NEXRAD radar during the Thursday, April 23, 2026 storm activity in Story 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.

“Several reports from local fire department and spotters of tornado on the ground. (DMX)”

SPC verified report · 2 ENE Slater

Friday, April 17, 2026

1 SPC verified storm report — hail up to 1"

NEXRAD radar during the Friday, April 17, 2026 storm activity in Story 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.

“Report from mPING: Quarter (1.00 in.). (DMX)”

SPC verified report · Collins

Wednesday, April 15, 2026

6 SPC verified storm reports — hail up to 2"

NEXRAD radar during the Wednesday, April 15, 2026 storm activity in Story 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.

“A few 2 inch... mostly 1.75 and smaller. (DMX)”

SPC verified report · 1 SW Mccallsburg

“Report of damage so far is a barn lost a lean-to and part of a roof. Time estimated from radar. (DMX)”

SPC verified report · 1 NW Mccallsburg

Sunday, March 15, 2026

3 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 · Story 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 · Story County

Saturday, March 14, 2026

1 NWS warning — wind gusts up to 65 mph

“...BLIZZARD CONDITIONS SUNDAY INTO MONDAY MORNING... .A significant winter storm will impact parts of the Upper Midwest this weekend, mainly from Sunday through Monday morning. Widespread snow will fall across Iowa with higher amounts of 6+ inches possible north and east. Winds will gust 55-65+ mph, resulting in significant drifting of snow and visibility reductions.”

NWS severe weather mention · Story County

Friday, March 13, 2026

4 NWS warnings — wind gusts up to 65 mph

“WHAT...West winds 30 to 40 mph with gusts up to around 60 mph expected. Isolated gusts of 60 to 65 mph are possible. WHERE...Central and northern Iowa, including I-35 and I-80. WHEN...Until 10 AM CDT this morning. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”

NWS severe weather mention · Story County

“WHAT...West winds 30 to 40 mph with gusts up to around 60 mph expected. Isolated gusts of 60 to 65 mph are possible. WHERE...Central and northern Iowa, including I-35 and I-80. WHEN...Until 10 AM CDT this morning. IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.”

NWS severe weather mention · Story County

Thursday, March 12, 2026

4 NWS warnings — wind gusts up to 65 mph

“WHAT...West winds 30 to 40 mph with gusts up to around 60 mph expected. Isolated gusts of 60 to 65 mph are possible. WHERE...Central and northern Iowa, including I-35 and I-80. WHEN...Until 10 AM CDT 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.”

NWS severe weather mention · Story County

“WHAT...West to northwest winds 30 to 35 mph with gusts up to 60 mph expected. WHERE...Central and northern Iowa. WHEN...From 10 PM tonight to 10 AM CDT 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.”

NWS severe weather mention · Story County

Wednesday, March 11, 2026

2 NWS warnings — wind gusts up to 60 mph

“WHAT...West to northwest winds sustained at 30 to 35 mph with gusts up to 60 mph possible. WHERE...Much of northern Iowa and portions of central Iowa. WHEN...From Thursday night into Friday morning. IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles on north south roads.”

NWS severe weather mention · Story County

“WHAT...West to northwest winds sustained at 25 to 35 mph with gusts up to 60 mph possible. WHERE...Much of northern Iowa and portions of central Iowa. WHEN...From Thursday night into Friday morning. IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles on north south roads.”

NWS severe weather mention · Story County

Wednesday, February 18, 2026

5 NWS warnings — 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 · Story County

“WHAT...West winds 25 to 35 mph with gusts up to 50 mph. WHERE...Portions of northern into central Iowa. WHEN...Until 6 PM CST this evening. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Story County

Tuesday, February 17, 2026

2 NWS warnings — wind gusts up to 50 mph

“WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected. WHERE...Portions of central, north central, northeast, northwest, and west central Iowa. WHEN...From 8 AM to 4 PM CST Wednesday. IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.”

NWS severe weather mention · Story County

“...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 · Story County

Sunday, January 18, 2026

1 NWS warning — wind gusts up to 55 mph

“WHAT...Localized snow showers and blowing snow. Additional snow accumulations of a dusting. Winds gusts of 40 to 50 mph with a few gusts to 55 mph possible. WHERE...Portions of central into northeastern Iowa. WHEN...Until midnight CST tonight. IMPACTS...Plan on periods of reduced visibility. Gusty winds could also bring down tree branches.”

NWS severe weather mention · Story County

Friday, January 16, 2026

2 NWS warnings — wind gusts up to 50 mph

“...PERIODS OF SNOW SHOWERS OR SNOW SQUALLS POSSIBLE THROUGH EARLY EVENING... .Snow showers and snow squalls remain possible through early this evening. This activity may bring brief but intense snow rates, which will reduce visibility to a quarter mile or less at times, and quickly cover roads creating hazardous travel conditions.”

NWS severe weather mention · Story County

“...LOCALIZED WHITEOUT CONDITIONS EXPECTED IN SNOW SQUALLS TODAY... .Snow showers and snow squalls will become more widespread this afternoon as a cold front arrives from northwest. This activity will move southeast by the afternoon before diminishing tonight.”

NWS severe weather mention · Story County

Wednesday, December 10, 2025

1 NWS warning — wind gusts up to 60 mph

“...STRONG WINDS RESULTING IN BLOWING SNOW THIS MORNING... .Very strong winds will continue over much of Iowa this morning. Wind gusts of 50 to 60 mph are expected. Strong winds may interact with snowpack on the ground, leading to blowing and drifting of snow. Scattered snow showers in conjunction with the strong winds may lead to brief visibility reductions this morning.”

NWS severe weather mention · Story County

Tuesday, December 9, 2025

4 NWS warnings — wind gusts up to 60 mph

“...STRONG WINDS RESULTING IN BLOWING SNOW TONIGHT THROUGH WEDNESDAY MORNING... .Very strong winds will develop over much of Iowa later tonight and into Wednesday morning. Wind gusts of 50 to 60 mph are expected. Strong winds will interact with snowpack on the ground, leading to blowing and drifting of snow.”

NWS severe weather mention · Story County

“...STRONG WINDS AND BLOWING SNOW WILL OCCUR TONIGHT THROUGH WEDNESDAY MORNING... .Very strong winds will develop this evening and tonight, with the strong wind gusts persisting into Wednesday morning. Wind gusts of 50 to 60 mph are expected. Much of the area has 6 inches or more of snow on the ground.”

NWS severe weather mention · Story County

Monday, December 8, 2025

1 NWS warning — wind gusts up to 60 mph

“...BLIZZARD CONDITIONS MAY OCCUR DUE TO SIGNIFICANT BLOWING SNOW TUESDAY NIGHT AND WEDNESDAY MORNING... .Very strong winds will develop Tuesday evening with the strong wind gusts persisting into Wednesday morning. Wind gusts of 50 to 60 mph are expected. Much of the area has 6 inches or more of snow on the ground.”

NWS severe weather mention · Story 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 Story County, IA?

The most recent recorded event was on Sep 14, 2026. Official NWS and SPC records show 49 severe weather events in Story 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 Story County recently?

Yes — 8 hail reports in the last 12 months, with hail up to 2.75" 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 Story 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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