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Home Return to list Severe Thunderstorm Warning 0174 Issued by the Des Moines Forecast Office
Action: New Issued At: 2026-05-17 22:12:11
020
WUUS53 KDMX 180311
SVRDMX
IAC023-033-069-081-197-180400-
/O.NEW.KDMX.SV.W.0174.260518T0311Z-260518T0400Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Des Moines IA
1011 PM CDT Sun May 17 2026
The National Weather Service in Des Moines has issued a
* Severe Thunderstorm Warning for...
Northeastern Wright County in north central Iowa...
Northern Franklin County in north central Iowa...
Southeastern Hancock County in north central Iowa...
Northern Butler County in north central Iowa...
Cerro Gordo County in north central Iowa...
* Until 1100 PM CDT.
* At 1011 PM CDT, a severe thunderstorm was located over Thornton, or
14 miles southeast of Garner, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Mason City, Hampton, Allison, Clarksville, Nora Springs, Sheffield,
Greene, Rockwell, Clear Lake, Dumont, Latimer, Thornton, Meservey,
Alexander, Swaledale, Bristow, Rock Falls, Hansell, Chapin, and
Aredale.
This includes Interstate 35 between mile markers 167 and 193.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.
A Tornado Watch remains in effect until 100 AM CDT for north central
and northeastern Iowa.
&&
LAT...LON 4291 9302 4291 9255 4274 9256 4276 9357
4307 9353 4323 9303
TIME...MOT...LOC 0311Z 265DEG 47KT 4297 9338
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Donavon
Action: Cancelled Issued At: 2026-05-17 22:39:43
624
WWUS53 KDMX 180339
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
1039 PM CDT Sun May 17 2026
IAC081-197-180348-
/O.CAN.KDMX.SV.W.0174.000000T0000Z-260518T0400Z/
Wright IA-Hancock IA-
1039 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WRIGHT AND
SOUTHEASTERN HANCOCK COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 100 AM CDT for north central
and northeastern Iowa.
LAT...LON 4291 9255 4274 9256 4276 9331 4314 9330
4323 9303 4291 9302
TIME...MOT...LOC 0338Z 265DEG 47KT 4300 9289
$$
IAC023-033-069-180400-
/O.CON.KDMX.SV.W.0174.000000T0000Z-260518T0400Z/
Franklin IA-Butler IA-Cerro Gordo IA-
1039 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR NORTHEASTERN FRANKLIN...NORTHERN BUTLER AND EASTERN CERRO GORDO
COUNTIES...
At 1038 PM CDT, a severe thunderstorm was located over Marble Rock,
or 11 miles west of Charles City, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Mason City, Hampton, Allison, Clarksville, Nora Springs, Sheffield,
Greene, Rockwell, Dumont, Bristow, Rock Falls, Hansell, Chapin,
Aredale, Dougherty, Burchinal, Portland, Beeds Lake State Park, and
Allison Municipal Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 100 AM CDT for north central
and northeastern Iowa.
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.
&&
LAT...LON 4291 9255 4274 9256 4276 9331 4314 9330
4323 9303 4291 9302
TIME...MOT...LOC 0338Z 265DEG 47KT 4300 9289
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Donavon
Action: Continued Issued At: 2026-05-17 22:39:43
624
WWUS53 KDMX 180339
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
1039 PM CDT Sun May 17 2026
IAC081-197-180348-
/O.CAN.KDMX.SV.W.0174.000000T0000Z-260518T0400Z/
Wright IA-Hancock IA-
1039 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WRIGHT AND
SOUTHEASTERN HANCOCK COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 100 AM CDT for north central
and northeastern Iowa.
LAT...LON 4291 9255 4274 9256 4276 9331 4314 9330
4323 9303 4291 9302
TIME...MOT...LOC 0338Z 265DEG 47KT 4300 9289
$$
IAC023-033-069-180400-
/O.CON.KDMX.SV.W.0174.000000T0000Z-260518T0400Z/
Franklin IA-Butler IA-Cerro Gordo IA-
1039 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
FOR NORTHEASTERN FRANKLIN...NORTHERN BUTLER AND EASTERN CERRO GORDO
COUNTIES...
At 1038 PM CDT, a severe thunderstorm was located over Marble Rock,
or 11 miles west of Charles City, moving east at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Mason City, Hampton, Allison, Clarksville, Nora Springs, Sheffield,
Greene, Rockwell, Dumont, Bristow, Rock Falls, Hansell, Chapin,
Aredale, Dougherty, Burchinal, Portland, Beeds Lake State Park, and
Allison Municipal Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 100 AM CDT for north central
and northeastern Iowa.
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.
&&
LAT...LON 4291 9255 4274 9256 4276 9331 4314 9330
4323 9303 4291 9302
TIME...MOT...LOC 0338Z 265DEG 47KT 4300 9289
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Donavon
Action: Cancelled Issued At: 2026-05-17 22:49:13
959
WWUS53 KDMX 180348
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
1048 PM CDT Sun May 17 2026
IAC023-033-069-180358-
/O.CAN.KDMX.SV.W.0174.000000T0000Z-260518T0400Z/
Franklin IA-Butler IA-Cerro Gordo IA-
1048 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN FRANKLIN...
NORTHERN BUTLER AND EASTERN CERRO GORDO COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However, gusty winds are
still possible with this thunderstorm.
A Tornado Watch remains in effect until 100 AM CDT for north central
and northeastern Iowa.
LAT...LON 4291 9255 4274 9256 4276 9331 4314 9330
4323 9303 4291 9302
TIME...MOT...LOC 0347Z 265DEG 47KT 4301 9270
$$
Donavon
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