Heavy to severe thunderstorms may bring areas of excessive rainfall and flooding over parts of the southern Plains through Friday. A Slight Risk of excessive rainfall has been issued. Dangerously hot temperatures are forecast across parts of southern Arizona and far southeastern California Saturday through Monday. An Extreme Heat Watch has been issued. Read More >
Overview
Late in the evening on Wednesday, May 11, thunderstorms moved across south central South Dakota, while others developed over the Black Hills and moved northeast overnight. Portions of the western South Dakota plains were hit by multiple thunderstorms overnight, which brought damaging winds and large hail. The most severe wind damage occurred in the Red Owl area, where several outbuildings were substantially damaged or completely destroyed. A damage survey determined the damage was caused by very strong straight-line winds, not a tornado. While the highest measured wind gust was 76 mph, the structure damage indicated wind gusts were higher than 80 mph.
Photos & Video
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| Machine shed damage near Red Owl |
Machine shed damage near Red Owl |
Machine shed damage near Red Owl |
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| Machine shed damage near Red Owl |
Machine shed damage near Red Owl |
Machine shed damage near Red Owl (C. Matt) |
Radar
Storm Reports
PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 930 AM MDT SAT MAY 14 2022 THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS FROM THUNDERSTORMS THAT OCCURRED LATE MAY 11 AND EARLY MAY 12 ...24 HOUR RAINFALL... LOCATION 24 HOUR TIME/DATE COMMENTS RAINFALL MEASURED (INCHES) SOUTH DAKOTA ...MEADE COUNTY... 6 SSW FAIRPOINT 1.21 521 AM 5/12 COCORAHS 1 NNE FAITH 1.05 714 AM 5/12 ASOS 1 NNW PIEDMONT 0.99 714 AM 5/12 NWS EMPLOYEE 4 NNE SUMMERSET 0.76 600 AM 5/12 COCORAHS ...ZIEBACH COUNTY... 10 WSW RED ELM 1.10 645 AM 5/12 SMALL HAIL. ...WIND DAMAGE REPORTS... LOCATION DAMAGE ENNING SD 2 INCH TREE BRANCHES DOWN 2 NW RED OWL SD ROOF BLOWN OFF SHOP, DOORS BLOWN DOWN 2 SE RED OWL SD LONGBOX PICKUP AND ATTACHED HORSE TRAILER TIPPED OVER, VERY STURDY METAL FEED BUNKS MOVED 100 YDS, METAL TROUGH PICKED UP AND STUCK IN METAL FENCE 3 SSE THUNDER BUTTE SD BROKEN WINDOWS 7 ENE RED OWL SD ROOF BLOWN OFF SHED, GRAIN BIN MOVED 1/4 MI, TANK MOVED OFF CEMENT TRUCK 1/4 MI 3 NE RED OWL SD ROOF BLOWN OFF AND SOME WALLS COLLAPSED ON A BARN 4 ENE RED OWL SD ROOF TORN OFF BARN ...MAXIMUM OBSERVED WINDS SORTED BY MAGNITUDE... LOCATION MAX WIND COMMENTS MPH 3 W UNION CENTER SD 76 1227 AM 5/12/2022 RAPID CITY ARPT SD 72 104 AM 5/12/2022 UNION CENTER SD 70 1230 AM 5/12/2022 ELLSWORTH AFB SD 68 105 AM 5/12/2022 4 S DWTN RAPID CITY SD 64 100 AM 5/12/2022 12 N UNION CENTER SD 60 120 AM 5/12/2022 3 SSE THUNDER BUTTE SD 60 200 AM 5/12/2022 1 WNW CAPUTA SD 60 110 AM 5/12/2022 3 NW WASTA SD 59 140 AM 5/12/2022 1 W BOX ELDER SD 57 106 AM 5/12/2022 5 WNW NEW UNDERWOOD SD 56 114 AM 5/12/2022 1 W SOUTH EAGLE BUTTE SD 56 220 AM 5/12/2022 ...MAXIMUM HAIL SIZE SORTED BY MAGNITUDE... LOCATION MAX SIZE COMMENTS IN/S/ DUPREE SD 2.00 300 AM 5/12/2022 ENNING SD 1.75 205 AM 5/12/2022 3 SSE THUNDER BUTTE SD 1.75 200 AM 5/12/2022 ESE WINNER SD 1.50 1051 PM 5/11/2022 2 SE RED OWL SD 1.25 120 AM 5/12/2022 3 N SHERIDAN LAKE SD 1.00 1242 AM 5/12/2022 12 N UNION CENTER SD 1.00 120 AM 5/12/2022 5 SSE FAIRPOINT SD 1.00 1238 AM 5/12/2022 7 NNE ELLSWORTH AFB SD 1.00 118 AM 5/12/2022 2 SW HAMILL SD 1.00 1045 PM 5/11/2022 10 NW CUSTER SD 1.00 1205 AM 5/12/2022 4 NE ROCKERVILLE SD 0.75 1250 AM 5/12/2022 1 E DWTN RAPID CITY SD 0.50 100 AM 5/12/2022
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