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Home Return to list Severe Thunderstorm Warning 0178 Issued by the Des Moines Forecast Office
Action: New Issued At: 2026-05-18 19:42:02
680
WUUS53 KDMX 190041
SVRDMX
IAC099-153-181-190130-
/O.NEW.KDMX.SV.W.0178.260519T0041Z-260519T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Des Moines IA
741 PM CDT Mon May 18 2026
The National Weather Service in Des Moines has issued a
* Severe Thunderstorm Warning for...
Central Polk County in central Iowa...
Northwestern Jasper County in central Iowa...
North central Warren County in south central Iowa...
* Until 830 PM CDT.
* At 741 PM CDT, a severe thunderstorm was located over Principal
Park, or over Des Moines, moving northeast at 45 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Des Moines, West Des Moines, Ankeny, Urbandale, Johnston, Clive,
Altoona, Norwalk, Pleasant Hill, Windsor Heights, Bondurant,
Saylorville, Mitchellville, Colfax, Southridge Mall, Adventureland
Amusement Park, Merle Hay Mall, Iowa Events Center, Prairie
Meadows, and Iowa State Fairgrounds.
This includes the following highways...
Interstate 35 between mile markers 70 and 72, and between mile
markers 87 and 93.
Interstate 80 between mile markers 122 and 126, and between mile
markers 130 and 158.
Interstate 235 between mile markers 1 and 14.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4146 9371 4158 9379 4160 9379 4161 9381
4186 9335 4186 9333 4168 9318
TIME...MOT...LOC 0041Z 243DEG 38KT 4158 9363
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Donavon
Action: Continued Issued At: 2026-05-18 20:01:03
343
WWUS53 KDMX 190100
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
800 PM CDT Mon May 18 2026
IAC181-190109-
/O.CAN.KDMX.SV.W.0178.000000T0000Z-260519T0130Z/
Warren IA-
800 PM CDT Mon May 18 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL WARREN COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for central Iowa.
LAT...LON 4153 9355 4168 9368 4186 9335 4186 9333
4168 9318
TIME...MOT...LOC 0059Z 243DEG 38KT 4166 9343
$$
IAC099-153-190130-
/O.CON.KDMX.SV.W.0178.000000T0000Z-260519T0130Z/
Polk IA-Jasper IA-
800 PM CDT Mon May 18 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR EASTERN POLK AND NORTHWESTERN JASPER COUNTIES...
At 759 PM CDT, a severe thunderstorm was located over Altoona, moving
northeast at 45 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Des Moines, Ankeny, Johnston, Altoona, Pleasant Hill, Bondurant,
Saylorville, Mitchellville, Colfax, Prairie Meadows, Iowa State
Fairgrounds, Adventureland Amusement Park, Mingo, Valeria,
Weh-Weh-Neh-Kee State Park, Margo Frankel Woods State Park, and
Ankeny Regional Airport.
This includes the following highways...
Interstate 35 between mile markers 87 and 93.
Interstate 80 between mile markers 134 and 158.
Interstate 235 between mile markers 10 and 14.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central 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 4153 9355 4168 9368 4186 9335 4186 9333
4168 9318
TIME...MOT...LOC 0059Z 243DEG 38KT 4166 9343
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Donavon
Action: Cancelled Issued At: 2026-05-18 20:01:03
343
WWUS53 KDMX 190100
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
800 PM CDT Mon May 18 2026
IAC181-190109-
/O.CAN.KDMX.SV.W.0178.000000T0000Z-260519T0130Z/
Warren IA-
800 PM CDT Mon May 18 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL WARREN COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM CDT for central Iowa.
LAT...LON 4153 9355 4168 9368 4186 9335 4186 9333
4168 9318
TIME...MOT...LOC 0059Z 243DEG 38KT 4166 9343
$$
IAC099-153-190130-
/O.CON.KDMX.SV.W.0178.000000T0000Z-260519T0130Z/
Polk IA-Jasper IA-
800 PM CDT Mon May 18 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR EASTERN POLK AND NORTHWESTERN JASPER COUNTIES...
At 759 PM CDT, a severe thunderstorm was located over Altoona, moving
northeast at 45 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Des Moines, Ankeny, Johnston, Altoona, Pleasant Hill, Bondurant,
Saylorville, Mitchellville, Colfax, Prairie Meadows, Iowa State
Fairgrounds, Adventureland Amusement Park, Mingo, Valeria,
Weh-Weh-Neh-Kee State Park, Margo Frankel Woods State Park, and
Ankeny Regional Airport.
This includes the following highways...
Interstate 35 between mile markers 87 and 93.
Interstate 80 between mile markers 134 and 158.
Interstate 235 between mile markers 10 and 14.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central 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 4153 9355 4168 9368 4186 9335 4186 9333
4168 9318
TIME...MOT...LOC 0059Z 243DEG 38KT 4166 9343
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Donavon
Action: Continued Issued At: 2026-05-18 20:14:34
813
WWUS53 KDMX 190114
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
814 PM CDT Mon May 18 2026
IAC099-153-190130-
/O.CON.KDMX.SV.W.0178.000000T0000Z-260519T0130Z/
Polk IA-Jasper IA-
814 PM CDT Mon May 18 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR NORTHEASTERN POLK AND NORTHWESTERN JASPER COUNTIES...
At 814 PM CDT, a severe thunderstorm was located near Mingo, or 10
miles west of Newton, moving northeast at 45 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Altoona, Bondurant, Mitchellville, Colfax, Mingo, and Valeria.
This includes Interstate 80 between mile markers 145 and 158.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for central Iowa.
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.
&&
LAT...LON 4161 9340 4176 9353 4186 9335 4186 9333
4168 9318
TIME...MOT...LOC 0114Z 243DEG 38KT 4173 9324
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Donavon
Action: Expired Issued At: 2026-05-18 20:25:34
967
WWUS53 KDMX 190125
SVSDMX
Severe Weather Statement
National Weather Service Des Moines IA
825 PM CDT Mon May 18 2026
IAC099-153-190134-
/O.EXP.KDMX.SV.W.0178.000000T0000Z-260519T0130Z/
Polk IA-Jasper IA-
825 PM CDT Mon May 18 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN POLK AND
NORTHWESTERN JASPER COUNTIES WILL EXPIRE AT 830 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 1000 PM CDT for central Iowa.
LAT...LON 4161 9340 4176 9353 4186 9335 4186 9333
4168 9318
TIME...MOT...LOC 0124Z 243DEG 38KT 4177 9314
$$
Donavon
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