Union County, South Dakota, Friday, October 9, 2026

“Flash Flood Warning issued October 9 at 2:37AM CDT until October 9 at 4:15AM CDT by NWS Sioux Falls SD”

At 237 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3.5 inches of rain have fallen. Flooding impacts will continue, but no additional rainfall is expected. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Hawarden and Alcester.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.

“Flash Flood Warning issued October 9 at 1:15AM CDT until October 9 at 4:15AM CDT by NWS Sioux Falls SD”

FFWFSD The National Weather Service in Sioux Falls has issued a * Flash Flood Warning for... Southwestern Sioux County in northwestern Iowa... Northeastern Union County in southeastern South Dakota... * Until 415 AM CDT. * At 115 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3.5 inches of rain have fallen. The expected rainfall rate is 1.5 to 3 inches in 1 hour. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Hawarden and Alcester.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.

“Severe Thunderstorm Warning issued October 9 at 12:49AM CDT until October 9 at 1:15AM CDT by NWS Sioux Falls SD”

At 1249 AM CDT, a severe thunderstorm was located near Hawarden, moving southeast at 20 mph. HAZARD...Golf ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect damage to roofs, siding, windows, and vehicles. This severe thunderstorm will be near... Hawarden around 1250 AM CDT. Ireton around 105 AM CDT. Craig and Maurice around 110 AM CDT. Other locations impacted by the severe thunderstorm include Chatsworth.

Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. This storm is capable of producing dangerous hail. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Sioux Falls SD.

“Severe Thunderstorm Warning issued October 9 at 12:35AM CDT until October 9 at 1:15AM CDT by NWS Sioux Falls SD”

SVRFSD The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... North Central Plymouth County in northwestern Iowa... Southwestern Sioux County in northwestern Iowa... Southern Lincoln County in southeastern South Dakota... Northeastern Union County in southeastern South Dakota... * Until 115 AM CDT. * At 1235 AM CDT, a severe thunderstorm was located over Hawarden, moving southeast at 25 mph. HAZARD...Ping pong ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect damage to roofs, siding, windows, and vehicles. * This severe thunderstorm will be near... Hawarden and Alcester around 1240 AM CDT. Ireton around 100 AM CDT. Craig and Maurice around 110 AM CDT. Other locations impacted by the severe thunderstorm include Chatsworth.

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Sioux Falls SD.

“Severe Thunderstorm Warning issued October 9 at 12:29AM CDT until October 9 at 12:45AM CDT by NWS Sioux Falls SD”

At 1229 AM CDT, a severe thunderstorm was located near Alcester, or near Hawarden, moving east at 20 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe thunderstorm will be near... Alcester around 1230 AM CDT. Hawarden around 1235 AM CDT.

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Sioux Falls SD.

“Severe Thunderstorm Warning issued October 8 at 11:57PM CDT until October 9 at 12:45AM CDT by NWS Sioux Falls SD”

SVRFSD The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Northeastern Clay County in southeastern South Dakota... Southern Lincoln County in southeastern South Dakota... Northern Union County in southeastern South Dakota... * Until 1245 AM CDT. * At 1157 PM CDT, a severe thunderstorm was located over Beresford, moving southeast at 20 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * This severe thunderstorm will be near... Beresford around 1200 AM CDT. Alcester around 1220 AM CDT. Other locations impacted by the severe thunderstorm include Hawarden.

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Sioux Falls SD.

“Severe Thunderstorm Warning issued October 8 at 11:48PM CDT until October 9 at 12:00AM CDT by NWS Sioux Falls SD”

At 1148 PM CDT, a severe thunderstorm was located over Beresford, moving east at 25 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. This severe thunderstorm will be near... Beresford around 1150 PM CDT. Alcester around 1155 PM CDT.

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Sioux Falls SD.

“Severe Thunderstorm Warning issued October 8 at 11:31PM CDT until October 8 at 11:45PM CDT by NWS Sioux Falls SD”

At 1131 PM CDT, a severe thunderstorm was located near Centerville, or 7 miles west of Beresford, moving east at 35 mph. HAZARD...Ping pong ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect damage to roofs, siding, windows, and vehicles. This severe thunderstorm will be near... Centerville around 1135 PM CDT. Beresford around 1140 PM CDT.

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Sioux Falls SD.

“Severe Thunderstorm Warning issued October 8 at 11:09PM CDT until October 9 at 12:00AM CDT by NWS Sioux Falls SD”

SVRFSD The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Southwestern Sioux County in northwestern Iowa... Northeastern Clay County in southeastern South Dakota... Southwestern Lincoln County in southeastern South Dakota... Southeastern Turner County in southeastern South Dakota... Northern Union County in southeastern South Dakota... * Until midnight CDT. * At 1109 PM CDT, a severe thunderstorm was located 6 miles south of Centerville, or 8 miles southwest of Beresford, moving southeast at 25 mph. HAZARD...Ping pong ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect damage to roofs, siding, windows, and vehicles. * This severe thunderstorm will be near... Centerville around 1110 PM CDT. Beresford around 1120 PM CDT. Union Grove State Park around 1135 PM CDT. Other locations impacted by the severe thunderstorm include Alcester and Hawarden.

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Sioux Falls SD.

“Severe Thunderstorm Warning issued October 8 at 10:54PM CDT until October 8 at 11:45PM CDT by NWS Sioux Falls SD”

SVRFSD The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Northeastern Clay County in southeastern South Dakota... Southwestern Lincoln County in southeastern South Dakota... Southeastern Turner County in southeastern South Dakota... Northwestern Union County in southeastern South Dakota... * Until 1145 PM CDT. * At 1054 PM CDT, a severe thunderstorm was located near Centerville, or 11 miles west of Beresford, moving east at 25 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * This severe thunderstorm will be near... Centerville around 1055 PM CDT. Beresford around 1120 PM CDT. Other locations impacted by the severe thunderstorm include Alcester.

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Sioux Falls SD.

“Severe Thunderstorm Warning issued October 8 at 10:37PM CDT until October 8 at 11:15PM CDT by NWS Sioux Falls SD”

SVRFSD The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Northwestern Plymouth County in northwestern Iowa... Southwestern Sioux County in northwestern Iowa... Northern Union County in southeastern South Dakota... * Until 1115 PM CDT. * At 1037 PM CDT, a severe thunderstorm was located 5 miles east of Union Grove State Park, or 12 miles southwest of Hawarden, moving east at 25 mph. HAZARD...Ping pong ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect damage to roofs, siding, windows, and vehicles. * This severe thunderstorm will be near... Union Grove State Park around 1040 PM CDT. Akron around 1055 PM CDT. Other locations impacted by the severe thunderstorm include Chatsworth.

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Sioux Falls SD.

“Severe Thunderstorm Warning issued October 8 at 10:34PM CDT until October 8 at 10:45PM CDT by NWS Sioux Falls SD”

At 1034 PM CDT, a severe thunderstorm was located near Union Grove State Park, or 10 miles south of Beresford, moving southeast at 20 mph. HAZARD...Ping pong ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect damage to roofs, siding, windows, and vehicles. This severe thunderstorm will be near... Union Grove State Park around 1035 PM CDT. Alcester around 1040 PM CDT.

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Sioux Falls SD.

“Severe Thunderstorm Warning issued October 8 at 10:02PM CDT until October 8 at 10:45PM CDT by NWS Sioux Falls SD”

SVRFSD The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... Northeastern Clay County in southeastern South Dakota... Northwestern Union County in southeastern South Dakota... * Until 1045 PM CDT. * At 1002 PM CDT, a severe thunderstorm was located 7 miles south of Centerville, or 9 miles southwest of Beresford, moving east at 25 mph. HAZARD...Half dollar size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * This severe thunderstorm will be near... Beresford around 1015 PM CDT. Union Grove State Park around 1025 PM CDT. Other locations impacted by the severe thunderstorm include Alcester.

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail.

“Severe Thunderstorm Warning issued October 8 at 7:34PM CDT until October 8 at 8:15PM CDT by NWS Sioux Falls SD”

SVRFSD The National Weather Service in Sioux Falls has issued a * Severe Thunderstorm Warning for... North Central Plymouth County in northwestern Iowa... Southern Sioux County in northwestern Iowa... Northeastern Union County in southeastern South Dakota... * Until 815 PM CDT. * At 734 PM CDT, a severe thunderstorm was located over Hawarden, moving southeast at 35 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * This severe thunderstorm will be near... Hawarden around 735 PM CDT. Ireton around 745 PM CDT. Craig around 750 PM CDT. Maurice around 755 PM CDT. Other locations impacted by the severe thunderstorm include Chatsworth, Struble, Brunsville and Le Mars.

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing large hail.