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Home Return to list Severe Thunderstorm Warning 0318 Issued by the Sioux Falls Forecast Office
Action: New Issued At: 2025-09-16 21:24:10 862 WUUS53 KFSD 170223 SVRFSD IAC141-143-170315- /O.NEW.KFSD.SV.W.0318.250917T0223Z-250917T0315Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Sioux Falls SD 923 PM CDT Tue Sep 16 2025 The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Southeastern Osceola County in northwestern Iowa... Northeastern OBrien County in northwestern Iowa... * Until 1015 PM CDT. * At 923 PM CDT, a severe thunderstorm was located near Melvin, or 14 miles southeast of Sibley, and is nearly stationary. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * This severe thunderstorm will remain over mainly rural areas of southeastern Osceola and northeastern OBrien Counties. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4324 9540 4321 9552 4336 9565 4341 9543 TIME...MOT...LOC 0223Z 157DEG 3KT 4329 9550 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ IG Action: Continued Issued At: 2025-09-16 21:33:10 126 WWUS53 KFSD 170233 SVSFSD Severe Weather Statement National Weather Service Sioux Falls SD 933 PM CDT Tue Sep 16 2025 IAC141-143-170315- /O.CON.KFSD.SV.W.0318.000000T0000Z-250917T0315Z/ Osceola IA-OBrien IA- 933 PM CDT Tue Sep 16 2025 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR SOUTHEASTERN OSCEOLA AND NORTHEASTERN OBRIEN COUNTIES... At 932 PM CDT, a severe thunderstorm was located near Melvin, or 15 miles southeast of Sibley, and is nearly stationary. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe thunderstorm will remain over mainly rural areas of southeastern Osceola and northeastern OBrien Counties. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4324 9540 4321 9552 4331 9560 4335 9542 TIME...MOT...LOC 0232Z 194DEG 1KT 4328 9549 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ IG Action: Continued Issued At: 2025-09-16 21:45:40 479 WWUS53 KFSD 170245 SVSFSD Severe Weather Statement National Weather Service Sioux Falls SD 945 PM CDT Tue Sep 16 2025 IAC141-143-170315- /O.CON.KFSD.SV.W.0318.000000T0000Z-250917T0315Z/ Osceola IA-OBrien IA- 945 PM CDT Tue Sep 16 2025 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR SOUTHEASTERN OSCEOLA AND NORTHEASTERN OBRIEN COUNTIES... At 945 PM CDT, a severe thunderstorm was located near Melvin, or 14 miles southeast of Sibley, and is nearly stationary. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe thunderstorm will remain over mainly rural areas of southeastern Osceola and northeastern OBrien Counties. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. To report severe weather contact your nearest law enforcement agency. They will send your report to the National Weather Service office in Sioux Falls. && LAT...LON 4324 9540 4321 9552 4327 9557 4329 9541 TIME...MOT...LOC 0245Z 157DEG 3KT 4329 9550 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.25 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ IG Action: Continued Issued At: 2025-09-16 21:56:40 585 WWUS53 KFSD 170256 SVSFSD Severe Weather Statement National Weather Service Sioux Falls SD 956 PM CDT Tue Sep 16 2025 IAC141-143-170315- /O.CON.KFSD.SV.W.0318.000000T0000Z-250917T0315Z/ Osceola IA-OBrien IA- 956 PM CDT Tue Sep 16 2025 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR SOUTHEASTERN OSCEOLA AND NORTHEASTERN OBRIEN COUNTIES... At 956 PM CDT, a severe thunderstorm was located near Hartley, or 16 miles southeast of Sibley, moving northeast at 5 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe thunderstorm will remain over mainly rural areas of southeastern Osceola and northeastern OBrien Counties. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. To report severe weather contact your nearest law enforcement agency. They will send your report to the National Weather Service office in Sioux Falls. && LAT...LON 4324 9540 4321 9552 4327 9557 4329 9541 TIME...MOT...LOC 0256Z 208DEG 5KT 4324 9550 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ IG Action: Cancelled Issued At: 2025-09-16 22:02:41 828 WWUS53 KFSD 170302 SVSFSD Severe Weather Statement National Weather Service Sioux Falls SD 1002 PM CDT Tue Sep 16 2025 IAC141-143-170312- /O.CAN.KFSD.SV.W.0318.000000T0000Z-250917T0315Z/ Osceola IA-OBrien IA- 1002 PM CDT Tue Sep 16 2025 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OSCEOLA AND NORTHEASTERN OBRIEN 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, small hail and heavy rain are still possible with this thunderstorm. To report severe weather, contact your nearest law enforcement agency. They will relay your report to the National Weather Service Sioux Falls. && LAT...LON 4324 9540 4321 9552 4327 9557 4329 9541 TIME...MOT...LOC 0301Z 157DEG 3KT 4324 9550 $$ IG | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||