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Home Return to list Severe Thunderstorm Warning 0277 Issued by the Rapid City Forecast Office
Action: New Issued At: 2026-08-12 01:29:38
626
WUUS53 KUNR 120629
SVRUNR
SDC123-120645-
/O.NEW.KUNR.SV.W.0277.260812T0629Z-260812T0645Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Rapid City SD
129 AM CDT Wed Aug 12 2026
The National Weather Service in Rapid City has issued a
* Severe Thunderstorm Warning for...
Southeastern Tripp County in south central South Dakota...
* Until 145 AM CDT.
* At 129 AM CDT, severe thunderstorms were located along a line from
13 miles east of Colome to 22 miles south of Wewela, or along a
line from 21 miles east of Winner to 46 miles south of Winner,
moving southeast at 35 mph.
HAZARD...70 mph wind gusts and small hail.
SOURCE...Automated observations.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Wewela.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. These storms have produced widespread
damaging winds.
This storm has a history of producing damaging winds.
&&
LAT...LON 4300 9987 4306 9983 4325 9953 4300 9953
TIME...MOT...LOC 0629Z 304DEG 30KT 4328 9946 4289 9958 4270 9991
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Helgeson
Action: Continued Issued At: 2026-08-12 01:35:08
849
WWUS53 KUNR 120634
SVSUNR
Severe Weather Statement
National Weather Service Rapid City SD
134 AM CDT Wed Aug 12 2026
SDC123-120645-
/O.CON.KUNR.SV.W.0277.000000T0000Z-260812T0645Z/
Tripp SD-
134 AM CDT Wed Aug 12 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR
SOUTHEASTERN TRIPP COUNTY...
At 134 AM CDT, severe thunderstorms were located along a line from 16
miles east of Colome to 24 miles south of Wewela, or along a line
from 24 miles east of Winner to 48 miles south of Winner, moving
southeast at 35 mph.
HAZARD...70 mph wind gusts and small hail.
SOURCE...Automated observations.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
Wewela.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors should move to shelter inside a well-built structure
and stay away from windows. These storms have produced widespread
damaging winds.
This storm has a history of producing damaging winds.
&&
LAT...LON 4300 9987 4309 9975 4313 9953 4300 9953
TIME...MOT...LOC 0629Z 304DEG 30KT 4328 9945 4288 9958 4270 9991
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH
$$
Helgeson
Action: Expired Issued At: 2026-08-12 01:48:38 329 WWUS53 KUNR 120648 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 148 AM CDT Wed Aug 12 2026 SDC123-120658- /O.EXP.KUNR.SV.W.0277.000000T0000Z-260812T0645Z/ Tripp SD- 148 AM CDT Wed Aug 12 2026 ...SEVERE THUNDERSTORM WARNING HAS EXPIRED FOR SOUTHEASTERN TRIPP COUNTY... The storms which prompted the warning have moved out of the area. Therefore, the warning has been allowed to expire. However, small hail and gusty winds are still possible with these thunderstorms. A Severe Thunderstorm Watch remains in effect until 600 AM CDT for a portion of south central South Dakota. && LAT...LON 4300 9987 4309 9975 4313 9953 4300 9953 TIME...MOT...LOC 0634Z 304DEG 30KT 4325 9940 4286 9953 4267 9985 $$ Helgeson | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||