Alert archive / Iowa / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 245, NWS Des Moines, IA

July 2, 2026Cerro Gordo County, Hancock County, Worth County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jul 2, 2026, 11:44 AM CDT for Cerro Gordo County, Hancock County, Worth County, Iowa. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 2, 2026, 11:44 AM CDT (16:44 UTC)
Expired
Jul 2, 2026, 12:45 PM CDT
In force
61 min
Issued by
NWS Des Moines, IA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Cerro Gordo County, IA, Hancock County, IA, Worth County, IA

The radar

The Des Moines radar (KDMX), 163 km from the middle of the area, began a volume at 16:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 4.7 hours before the alert went out and 186 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2026-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 152 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2026-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
152 J/kg
Mixed-layer CIN
-173 J/kg
Mixed-layer LCL
1469 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 2, 6:10 AM CDT, 5 hours 34 minutes earlier.

Area forecast discussion, Jul 2, 6:10 AM CDT, 5 hours 34 minutes before
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Hazardous weather outlook, Jul 2, 4:11 AM CDT, 7 hours 33 minutes before
Hazardous Weather Outlook
National Weather Service Des Moines IA
411 AM CDT Thu Jul 2 2026

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-030915-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
411 AM CDT Thu Jul 2 2026

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

An Extreme Heat Warning is in effect for the area. Please refer
to the National Weather Service website at weather.gov/desmoines
for further details.

There is a Slight Risk (Level 2 of 5) for severe weather across
portions of Iowa today.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

There is a Slight Risk (Level 2 of 5) for severe weather across
Iowa Friday and a Marginal Risk (Level 1 of 5) for severe weather
across portions of Iowa Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible tonight.

67

In the hours before

Special weather statement, Jul 2, 7:47 AM CDT, 3 hours 57 minutes before
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Special weather statement, Jul 2, 8:15 AM CDT, 3 hours 29 minutes before
Special Weather Statement
National Weather Service Des Moines IA
815 AM CDT Thu Jul 2 2026

IAZ006-007-021345-
Winnebago IA-Worth IA-
815 AM CDT Thu Jul 2 2026

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN WORTH AND NORTHEASTERN
WINNEBAGO COUNTIES THROUGH 845 AM CDT...

At 814 AM CDT, Doppler radar was tracking a strong thunderstorm near
Rice Lake, or 11 miles west of Northwood, moving northeast at 45 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Northwood, Lake Mills, Emmons, Rice Lake, Joice, Lake Mills Municipal
Airport, Hogsback Wildlife Area, Northwood Municipal, and Rice Lake
State Park.

This includes Interstate 35 between mile markers 209 and 218.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4345 9303 4331 9347 4350 9359 4350 9302
TIME...MOT...LOC 1314Z 233DEG 41KT 4341 9344

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

05
Special weather statement, Jul 2, 11:23 AM CDT, 21 minutes before
Special Weather Statement
National Weather Service Des Moines IA
1123 AM CDT Thu Jul 2 2026

IAZ005>007-016-017-025-021715-
Wright IA-Cerro Gordo IA-Kossuth IA-Winnebago IA-Worth IA-Hancock IA-
1123 AM CDT Thu Jul 2 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN WORTH...
NORTHEASTERN WRIGHT...SOUTHEASTERN KOSSUTH...HANCOCK...CERRO GORDO
AND SOUTHEASTERN WINNEBAGO COUNTIES THROUGH 1215 PM CDT...

At 1123 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles south of Britt, or 12 miles southwest of Garner, moving
northeast at 50 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail and additional
         heavy rainfall of one to two inches.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible. Ponding of water on roadways, low visibilities,
         and rises in small streams and creeks.

Locations impacted include...
Mason City, Forest City, Garner, Belmond, Britt, Clear Lake, Eagle
Lake, Mason City Municipal Airport, Ventura, Kanawha, Klemme,
Thornton, Wesley, Fertile, Corwith, Leland, Meservey, Crystal Lake,
Hanlontown, and Swaledale.

This includes Interstate 35 between mile markers 182 and 202.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4310 9307 4291 9346 4291 9350 4289 9350
      4279 9369 4305 9405 4342 9361
TIME...MOT...LOC 1623Z 236DEG 41KT 4298 9380

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

Fowle

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 2, 7:47 AM CDTSpecial Weather StatementDMXWinnebago28 min
Jul 2, 8:15 AM CDTSpecial Weather StatementDMXWorth30 min
Jul 2, 11:23 AM CDTSpecial Weather StatementDMXCerro Gordo, Hancock52 min
Jul 2, 1:05 PM CDTFlood WatchDMXAdair, Adams, Audubon, Black Hawk, Boone, Bremer and 39 more42 hr
Jul 2, 1:29 PM CDTSevere Thunderstorm WarningDMXBlack Hawk, Bremer46 min
Jul 2, 1:57 PM CDTTornado WarningDMXBremer18 min
Jul 2, 2:19 PM CDTRiver Flood WatchDMXBlack Hawk, Bremer, Butler59 hr
Jul 2, 2:19 PM CDTRiver Flood WatchDMXBlack Hawk5 days
Jul 2, 2:19 PM CDTRiver Flood WatchDMXBlack Hawk4 days
Jul 2, 2:21 PM CDTRiver Flood WatchDMXBlack Hawk, Bremer21 days
Jul 2, 2:21 PM CDTRiver Flood WatchDMXFranklin, Wright21 days
Jul 2, 2:21 PM CDTRiver Flood WatchDMXCerro Gordo, Floyd, Worth21 days
Jul 2, 4:00 PM CDTSevere Thunderstorm WarningDMXWebster45 min
Jul 2, 4:03 PM CDTSevere Thunderstorm WarningDMXCalhoun, Pocahontas, Webster43 min
Jul 2, 4:13 PM CDTSevere Thunderstorm WarningDMXHardin, Marshall, Story47 min
Jul 2, 4:17 PM CDTSevere Thunderstorm WarningDMXJasper, Polk58 min
Jul 2, 4:32 PM CDTSevere Thunderstorm Warning Considerable damage threatDMXHamilton, Webster, Wright58 min
Jul 2, 4:45 PM CDTSevere Thunderstorm WarningDMXHamilton, Webster, Wright45 min
Jul 2, 4:54 PM CDTSevere Thunderstorm WarningDMXJasper, Marshall, Polk, Story25 min
Jul 2, 4:58 PM CDTSevere Thunderstorm WarningDMXFranklin, Grundy, Hardin, Marshall29 min
Jul 2, 5:10 PM CDTSevere Thunderstorm WarningDMXCalhoun, Webster50 min
Jul 2, 5:15 PM CDTSevere Thunderstorm WarningDMXFranklin, Hamilton, Hardin45 min
Jul 2, 5:16 PM CDTSevere Thunderstorm WarningDMXBoone, Dallas, Polk, Story44 min
Jul 2, 5:58 PM CDTSevere Thunderstorm WarningDMXBoone, Polk, Story32 min
Jul 2, 6:58 PM CDTFlash Flood WarningDMXBlack Hawk, Grundy, Marshall, Tama6 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2026Every severe thunderstorm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.