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Home Return to list Severe Thunderstorm Warning 0170 Issued by the Des Moines Forecast Office
Action: New Issued At: 2026-05-17 21:27:10
731
WUUS53 KDMX 180226
SVRDMX
IAC009-015-025-027-047-049-073-077-079-161-187-180345-
/O.NEW.KDMX.SV.W.0170.260518T0226Z-260518T0345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Des Moines IA
926 PM CDT Sun May 17 2026
The National Weather Service in Des Moines has issued a
* Severe Thunderstorm Warning for...
Greene County in west central Iowa...
Southern Webster County in central Iowa...
Guthrie County in west central Iowa...
Audubon County in west central Iowa...
Southeastern Sac County in west central Iowa...
Southern Calhoun County in west central Iowa...
Eastern Crawford County in west central Iowa...
Southwestern Hamilton County in central Iowa...
Boone County in central Iowa...
Carroll County in west central Iowa...
Northwestern Dallas County in central Iowa...
* Until 1045 PM CDT.
* At 926 PM CDT, severe thunderstorms were located along a line
extending from Churdan to 4 miles south of Ralston to 7 miles east
of Irwin to near Marne, moving southeast at 35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Boone, Carroll, Perry, Jefferson, Audubon, Guthrie Center, Ogden,
Lake City, Manning, Coon Rapids, Glidden, Panora, Gowrie, Lake
Panorama, Boone Speedway, Exira, Dayton, Grand Junction, Adair, and
Manilla.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
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. These storms may cause serious injury and significant
property damage.
A Tornado Watch remains in effect until 300 AM CDT for central,
southwestern and west central Iowa.
&&
LAT...LON 4224 9516 4233 9372 4197 9385 4177 9421
4150 9436 4151 9504 4160 9504 4160 9509
4186 9509 4187 9533
TIME...MOT...LOC 0226Z 294DEG 28KT 4218 9447 4197 9465 4176 9507 4149
9515
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Fowle
Action: Cancelled Issued At: 2026-05-17 22:00:11
704
WWUS53 KDMX 180259
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
959 PM CDT Sun May 17 2026
IAC047-161-180309-
/O.CAN.KDMX.SV.W.0170.000000T0000Z-260518T0345Z/
Sac IA-Crawford IA-
959 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SAC AND EASTERN
CRAWFORD COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 300 AM CDT for central,
southwestern and west central Iowa.
LAT...LON 4233 9372 4197 9385 4177 9421 4150 9436
4151 9504 4160 9504 4160 9509 4184 9502
4227 9471
TIME...MOT...LOC 0259Z 293DEG 28KT 4218 9410 4187 9434 4166 9476 4150
9481
$$
IAC009-015-025-027-049-073-077-079-187-180345-
/O.CON.KDMX.SV.W.0170.000000T0000Z-260518T0345Z/
Greene IA-Webster IA-Guthrie IA-Audubon IA-Calhoun IA-Hamilton IA-
Boone IA-Carroll IA-Dallas IA-
959 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR GREENE...SOUTHERN WEBSTER...GUTHRIE...AUDUBON...SOUTHEASTERN
CALHOUN...SOUTHWESTERN HAMILTON...BOONE...EASTERN CARROLL AND
NORTHWESTERN DALLAS COUNTIES...
At 959 PM CDT, severe thunderstorms were located along a line
extending from Boxholm to near Jamaica to 7 miles northeast of Exira
to 4 miles northwest of Anita, moving southeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Boone, Carroll, Perry, Jefferson, Audubon, Guthrie Center, Ogden,
Lake City, Coon Rapids, Glidden, Panora, Gowrie, Lake Panorama, Boone
Speedway, Exira, Dayton, Grand Junction, Adair, Stratford, and Elk
Horn.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 300 AM CDT for central,
southwestern and west central Iowa.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4233 9372 4197 9385 4177 9421 4150 9436
4151 9504 4160 9504 4160 9509 4184 9502
4227 9471
TIME...MOT...LOC 0259Z 293DEG 28KT 4218 9410 4187 9434 4166 9476 4150
9481
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Fowle
Action: Continued Issued At: 2026-05-17 22:00:11
704
WWUS53 KDMX 180259
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
959 PM CDT Sun May 17 2026
IAC047-161-180309-
/O.CAN.KDMX.SV.W.0170.000000T0000Z-260518T0345Z/
Sac IA-Crawford IA-
959 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SAC AND EASTERN
CRAWFORD COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 300 AM CDT for central,
southwestern and west central Iowa.
LAT...LON 4233 9372 4197 9385 4177 9421 4150 9436
4151 9504 4160 9504 4160 9509 4184 9502
4227 9471
TIME...MOT...LOC 0259Z 293DEG 28KT 4218 9410 4187 9434 4166 9476 4150
9481
$$
IAC009-015-025-027-049-073-077-079-187-180345-
/O.CON.KDMX.SV.W.0170.000000T0000Z-260518T0345Z/
Greene IA-Webster IA-Guthrie IA-Audubon IA-Calhoun IA-Hamilton IA-
Boone IA-Carroll IA-Dallas IA-
959 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR GREENE...SOUTHERN WEBSTER...GUTHRIE...AUDUBON...SOUTHEASTERN
CALHOUN...SOUTHWESTERN HAMILTON...BOONE...EASTERN CARROLL AND
NORTHWESTERN DALLAS COUNTIES...
At 959 PM CDT, severe thunderstorms were located along a line
extending from Boxholm to near Jamaica to 7 miles northeast of Exira
to 4 miles northwest of Anita, moving southeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Boone, Carroll, Perry, Jefferson, Audubon, Guthrie Center, Ogden,
Lake City, Coon Rapids, Glidden, Panora, Gowrie, Lake Panorama, Boone
Speedway, Exira, Dayton, Grand Junction, Adair, Stratford, and Elk
Horn.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 300 AM CDT for central,
southwestern and west central Iowa.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4233 9372 4197 9385 4177 9421 4150 9436
4151 9504 4160 9504 4160 9509 4184 9502
4227 9471
TIME...MOT...LOC 0259Z 293DEG 28KT 4218 9410 4187 9434 4166 9476 4150
9481
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Fowle
Action: Continued Issued At: 2026-05-17 22:38:43
616
WWUS53 KDMX 180338
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
1038 PM CDT Sun May 17 2026
IAC009-027-180347-
/O.CAN.KDMX.SV.W.0170.000000T0000Z-260518T0345Z/
Audubon IA-Carroll IA-
1038 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR AUDUBON AND EASTERN CARROLL
COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 300 AM CDT for central,
southwestern and west central Iowa.
LAT...LON 4197 9385 4177 9421 4150 9436 4150 9467
4157 9463 4184 9450 4222 9441 4224 9375
TIME...MOT...LOC 0337Z 271DEG 44KT 4219 9381 4198 9415 4168 9439
$$
IAC015-025-049-073-077-079-187-180345-
/O.CON.KDMX.SV.W.0170.000000T0000Z-260518T0345Z/
Greene IA-Webster IA-Guthrie IA-Calhoun IA-Hamilton IA-Boone IA-
Dallas IA-
1038 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR GREENE...SOUTHEASTERN WEBSTER...GUTHRIE...SOUTHEASTERN CALHOUN...
SOUTH CENTRAL HAMILTON...BOONE AND NORTHWESTERN DALLAS COUNTIES...
At 1037 PM CDT, severe thunderstorms were located along a line
extending from 6 miles south of Stanhope to near Berkley to Panora,
moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Boone, Perry, Jefferson, Guthrie Center, Ogden, Panora, Lake
Panorama, Boone Speedway, Grand Junction, Adair, Casey, Menlo,
Bagley, Rippey, Yale, Paton, Jamaica, Linden, Boxholm, and Pilot
Mound.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 300 AM CDT for central,
southwestern and west central Iowa.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4197 9385 4177 9421 4150 9436 4150 9467
4157 9463 4184 9450 4222 9441 4224 9375
TIME...MOT...LOC 0337Z 271DEG 44KT 4219 9381 4198 9415 4168 9439
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Fowle
Action: Cancelled Issued At: 2026-05-17 22:38:43
616
WWUS53 KDMX 180338
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
1038 PM CDT Sun May 17 2026
IAC009-027-180347-
/O.CAN.KDMX.SV.W.0170.000000T0000Z-260518T0345Z/
Audubon IA-Carroll IA-
1038 PM CDT Sun May 17 2026
...THE SEVERE THUNDERSTORM WARNING FOR AUDUBON AND EASTERN CARROLL
COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 300 AM CDT for central,
southwestern and west central Iowa.
LAT...LON 4197 9385 4177 9421 4150 9436 4150 9467
4157 9463 4184 9450 4222 9441 4224 9375
TIME...MOT...LOC 0337Z 271DEG 44KT 4219 9381 4198 9415 4168 9439
$$
IAC015-025-049-073-077-079-187-180345-
/O.CON.KDMX.SV.W.0170.000000T0000Z-260518T0345Z/
Greene IA-Webster IA-Guthrie IA-Calhoun IA-Hamilton IA-Boone IA-
Dallas IA-
1038 PM CDT Sun May 17 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR GREENE...SOUTHEASTERN WEBSTER...GUTHRIE...SOUTHEASTERN CALHOUN...
SOUTH CENTRAL HAMILTON...BOONE AND NORTHWESTERN DALLAS COUNTIES...
At 1037 PM CDT, severe thunderstorms were located along a line
extending from 6 miles south of Stanhope to near Berkley to Panora,
moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Boone, Perry, Jefferson, Guthrie Center, Ogden, Panora, Lake
Panorama, Boone Speedway, Grand Junction, Adair, Casey, Menlo,
Bagley, Rippey, Yale, Paton, Jamaica, Linden, Boxholm, and Pilot
Mound.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 300 AM CDT for central,
southwestern and west central Iowa.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4197 9385 4177 9421 4150 9436 4150 9467
4157 9463 4184 9450 4222 9441 4224 9375
TIME...MOT...LOC 0337Z 271DEG 44KT 4219 9381 4198 9415 4168 9439
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Fowle
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