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Home Return to list Severe Thunderstorm Warning 0187 Issued by the Des Moines Forecast Office
Action: New Issued At: 2025-07-29 01:54:36 325 WUUS53 KDMX 290654 SVRDMX IAC099-123-127-157-171-290800- /O.NEW.KDMX.SV.W.0187.250729T0654Z-250729T0800Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Des Moines IA 154 AM CDT Tue Jul 29 2025 The National Weather Service in Des Moines has issued a * Severe Thunderstorm Warning for... Poweshiek County in central Iowa... Southeastern Marshall County in central Iowa... Tama County in central Iowa... Northern Mahaska County in south central Iowa... Eastern Jasper County in central Iowa... * Until 300 AM CDT. * At 153 AM CDT, severe thunderstorms were located along a line extending from 4 miles southwest of Garrison to near Gilman to near Sully, 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... Newton, Grinnell, Toledo, Montezuma, Tama, Brooklyn, Dysart, New Sharon, Iowa Speedway, Meskwaki Casino, Rock Creek Lake, Le Grand, Victor, Sully, Kellogg, Gilman, Holiday Lake, Lynnville, Malcom, and Deep River. This includes Interstate 80 between mile markers 165 and 204. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4151 9241 4133 9241 4157 9303 4173 9310 4201 9284 4224 9230 4151 9230 TIME...MOT...LOC 0653Z 308DEG 28KT 4211 9222 4190 9272 4154 9289 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dodson Action: Cancelled Issued At: 2025-07-29 02:18:06 105 WWUS53 KDMX 290717 SVSDMX Severe Weather Statement National Weather Service Des Moines IA 217 AM CDT Tue Jul 29 2025 IAC127-290727- /O.CAN.KDMX.SV.W.0187.000000T0000Z-250729T0800Z/ Marshall IA- 217 AM CDT Tue Jul 29 2025 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MARSHALL COUNTY IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until 400 AM CDT for central Iowa. LAT...LON 4151 9241 4133 9241 4152 9289 4169 9291 4186 9276 4200 9259 4207 9230 4151 9230 TIME...MOT...LOC 0717Z 308DEG 28KT 4201 9205 4180 9255 4144 9272 $$ IAC099-123-157-171-290800- /O.CON.KDMX.SV.W.0187.000000T0000Z-250729T0800Z/ Poweshiek IA-Tama IA-Mahaska IA-Jasper IA- 217 AM CDT Tue Jul 29 2025 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CDT FOR POWESHIEK...SOUTHEASTERN TAMA...NORTHERN MAHASKA AND SOUTHEASTERN JASPER COUNTIES... At 217 AM CDT, severe thunderstorms were located along a line extending from Van Horne to 5 miles west of Holiday Lake to 4 miles southwest of New Sharon, moving southeast at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Grinnell, Toledo, Montezuma, Tama, Brooklyn, New Sharon, Rock Creek Lake, Victor, Sully, Holiday Lake, Lynnville, Malcom, Deep River, Chelsea, Elberon, Barnes City, Oakland Acres, Searsboro, Hartwick, and Guernsey. This includes Interstate 80 between mile markers 174 and 204. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4151 9241 4133 9241 4152 9289 4169 9291 4186 9276 4200 9259 4207 9230 4151 9230 TIME...MOT...LOC 0717Z 308DEG 28KT 4201 9205 4180 9255 4144 9272 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dodson Action: Continued Issued At: 2025-07-29 02:18:06 105 WWUS53 KDMX 290717 SVSDMX Severe Weather Statement National Weather Service Des Moines IA 217 AM CDT Tue Jul 29 2025 IAC127-290727- /O.CAN.KDMX.SV.W.0187.000000T0000Z-250729T0800Z/ Marshall IA- 217 AM CDT Tue Jul 29 2025 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MARSHALL COUNTY IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until 400 AM CDT for central Iowa. LAT...LON 4151 9241 4133 9241 4152 9289 4169 9291 4186 9276 4200 9259 4207 9230 4151 9230 TIME...MOT...LOC 0717Z 308DEG 28KT 4201 9205 4180 9255 4144 9272 $$ IAC099-123-157-171-290800- /O.CON.KDMX.SV.W.0187.000000T0000Z-250729T0800Z/ Poweshiek IA-Tama IA-Mahaska IA-Jasper IA- 217 AM CDT Tue Jul 29 2025 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CDT FOR POWESHIEK...SOUTHEASTERN TAMA...NORTHERN MAHASKA AND SOUTHEASTERN JASPER COUNTIES... At 217 AM CDT, severe thunderstorms were located along a line extending from Van Horne to 5 miles west of Holiday Lake to 4 miles southwest of New Sharon, moving southeast at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Grinnell, Toledo, Montezuma, Tama, Brooklyn, New Sharon, Rock Creek Lake, Victor, Sully, Holiday Lake, Lynnville, Malcom, Deep River, Chelsea, Elberon, Barnes City, Oakland Acres, Searsboro, Hartwick, and Guernsey. This includes Interstate 80 between mile markers 174 and 204. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4151 9241 4133 9241 4152 9289 4169 9291 4186 9276 4200 9259 4207 9230 4151 9230 TIME...MOT...LOC 0717Z 308DEG 28KT 4201 9205 4180 9255 4144 9272 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dodson Action: Continued Issued At: 2025-07-29 02:36:06 601 WWUS53 KDMX 290735 SVSDMX Severe Weather Statement National Weather Service Des Moines IA 235 AM CDT Tue Jul 29 2025 IAC099-290745- /O.CAN.KDMX.SV.W.0187.000000T0000Z-250729T0800Z/ Jasper IA- 235 AM CDT Tue Jul 29 2025 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JASPER COUNTY IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until 400 AM CDT for central Iowa. LAT...LON 4151 9241 4133 9241 4146 9275 4186 9276 4196 9253 4203 9230 4151 9230 TIME...MOT...LOC 0735Z 308DEG 28KT 4193 9192 4172 9242 4136 9259 $$ IAC123-157-171-290800- /O.CON.KDMX.SV.W.0187.000000T0000Z-250729T0800Z/ Poweshiek IA-Tama IA-Mahaska IA- 235 AM CDT Tue Jul 29 2025 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CDT FOR POWESHIEK...SOUTHEASTERN TAMA AND NORTHEASTERN MAHASKA COUNTIES... At 235 AM CDT, severe thunderstorms were located along a line extending from near Norway to Brooklyn to 5 miles north of University Park, moving southeast at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Grinnell, Montezuma, Brooklyn, New Sharon, Victor, Holiday Lake, Malcom, Deep River, Chelsea, Elberon, Barnes City, Searsboro, Hartwick, Guernsey, Vining, and Grinnell Regional Airport. This includes Interstate 80 between mile markers 181 and 204. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4151 9241 4133 9241 4146 9275 4186 9276 4196 9253 4203 9230 4151 9230 TIME...MOT...LOC 0735Z 308DEG 28KT 4193 9192 4172 9242 4136 9259 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dodson Action: Cancelled Issued At: 2025-07-29 02:36:06 601 WWUS53 KDMX 290735 SVSDMX Severe Weather Statement National Weather Service Des Moines IA 235 AM CDT Tue Jul 29 2025 IAC099-290745- /O.CAN.KDMX.SV.W.0187.000000T0000Z-250729T0800Z/ Jasper IA- 235 AM CDT Tue Jul 29 2025 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JASPER COUNTY IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until 400 AM CDT for central Iowa. LAT...LON 4151 9241 4133 9241 4146 9275 4186 9276 4196 9253 4203 9230 4151 9230 TIME...MOT...LOC 0735Z 308DEG 28KT 4193 9192 4172 9242 4136 9259 $$ IAC123-157-171-290800- /O.CON.KDMX.SV.W.0187.000000T0000Z-250729T0800Z/ Poweshiek IA-Tama IA-Mahaska IA- 235 AM CDT Tue Jul 29 2025 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CDT FOR POWESHIEK...SOUTHEASTERN TAMA AND NORTHEASTERN MAHASKA COUNTIES... At 235 AM CDT, severe thunderstorms were located along a line extending from near Norway to Brooklyn to 5 miles north of University Park, moving southeast at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Grinnell, Montezuma, Brooklyn, New Sharon, Victor, Holiday Lake, Malcom, Deep River, Chelsea, Elberon, Barnes City, Searsboro, Hartwick, Guernsey, Vining, and Grinnell Regional Airport. This includes Interstate 80 between mile markers 181 and 204. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4151 9241 4133 9241 4146 9275 4186 9276 4196 9253 4203 9230 4151 9230 TIME...MOT...LOC 0735Z 308DEG 28KT 4193 9192 4172 9242 4136 9259 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dodson Action: Expired Issued At: 2025-07-29 02:55:37 068 WWUS53 KDMX 290755 SVSDMX Severe Weather Statement National Weather Service Des Moines IA 255 AM CDT Tue Jul 29 2025 IAC123-157-171-290804- /O.EXP.KDMX.SV.W.0187.000000T0000Z-250729T0800Z/ Poweshiek IA-Tama IA-Mahaska IA- 255 AM CDT Tue Jul 29 2025 ...THE SEVERE THUNDERSTORM WARNING FOR POWESHIEK...SOUTHEASTERN TAMA AND NORTHEASTERN MAHASKA COUNTIES WILL EXPIRE AT 300 AM CDT... The storms which prompted the warning have weakened below severe limits, and have exited the warned area. Therefore, the warning will be allowed to expire. However, small hail and gusty winds are still possible with these thunderstorms. A Severe Thunderstorm Watch remains in effect until 400 AM CDT for central Iowa. LAT...LON 4151 9241 4133 9241 4146 9275 4186 9276 4196 9253 4203 9230 4151 9230 TIME...MOT...LOC 0754Z 270DEG 28KT 4185 9178 4164 9228 4128 9245 $$ Dodson |