A coastal storm continues to bring bands of heavy rain, gusty winds, minor coastal flooding, and rip currents over the Mid-Atlantic region today. Heavy rain showers and thunderstorms persist across the Plains today with possible excessive rainfall over western South Dakota. Tropical Depression Seven has formed in the central Atlantic and could become a tropical storm later today. Read More >
Overview
On May 23, 2020, severe thunderstorms brought large hail and flash flooding to portions of the Black Hills and western South Dakota plains. The largest hail was golfball size reported in Haakon and Pennington counties. Heavy rain caused flash flooding across portions of Haakon and Meade counties.
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Philip (Katie B) |
Photos
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| Flooding 15 NE Rapid City (Robin R) |
3 E Piedmont (Michael P) |
Oglala (Cheyenne GW) |
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| 20 N Rapid City (Lexi E) |
9 NNE Box Elder (Susan C) |
Near Piedmont/Black Hawk |
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| West Cottonwood (Tom W) |
West Cottonwood (Tom W) |
Between Philip and Midland (Ryon B) |
Radar
| Radar loop of the severe storms during the afternoon and evening of May 23, 2020. |
Storm Reports
The storm reports listed below are in descending order and may not necessarily be the final storm reports. Hail reports listed by size (inches) SIZE LOCATION ST COUNTY TIME ------ ----------------------- -- -------------- ------- 1.75 11 W PHILIP SD HAAKON 0424 PM 1.75 6 W OWANKA SD PENNINGTON 0205 PM 1.50 3 W COTTONWOOD SD JACKSON 0332 PM 1.50 9 S UNION CENTER SD MEADE 0318 PM 1.50 SUMMERSET SD MEADE 0224 PM 1.25 7 NNE ELLSWORTH AFB SD MEADE 0305 PM 1.00 7 E WANBLEE SD JACKSON 0730 PM 1.00 12 N PHILIP SD HAAKON 0630 PM 1.00 7 NNE POTATO CREEK SD JACKSON 0630 PM 1.00 11 S BILLSBURG SD HAAKON 0600 PM HAIL COVERED A 3 MILE STRETCH OF HIGHWAY 73 1.00 13 SSW BILLSBURG SD HAAKON 0540 PM 1.00 12 WSW BILLSBURG SD HAAKON 0507 PM 1.00 5 ESE ELM SPRINGS SD MEADE 0500 PM 1.00 5 S WHITE OWL SD MEADE 0420 PM ROOF TORN OFF THE BARN, SEVERAL TREES UPROOTED. 1.00 3 WSW HILL CITY SD PENNINGTON 0345 PM 1.00 3 WNW COTTONWOOD SD JACKSON 0324 PM 1.00 5 ESE ELM SPRINGS SD MEADE 0310 PM 1.00 5 SSW MYSTIC SD PENNINGTON 0300 PM 1.00 4 W CACTUS FLAT SD JACKSON 0258 PM 1.00 SUMMERSET SD MEADE 0227 PM 1.00 1 NNW SUMMERSET SD MEADE 0220 PM 0.88 6 W BILLSBURG SD HAAKON 0524 PM 0.88 INTERIOR SD JACKSON 0228 PM Tstm wind reports listed by speed (mph) SPEED LOCATION ST COUNTY TIME ------ ----------------------- -- -------------- ------- 52.00 4 E CACTUS FLAT SD JACKSON 0629 PM 51.00 1 NNE FAITH SD MEADE 0816 PM 51.00 3 W UNION CENTER SD MEADE 0613 PM 51.00 8 N REDIG SD HARDING 0212 PM Rain amounts (inches) AMOUNT LOCATION ST COUNTY TIME ------ ----------------------- -- -------------- ------- 3.53 18 N PHILIP SD HAAKON 0700 AM 2.60 12 N COTTONWOOD SD HAAKON 0700 PM 2.13 2 E MIDLAND SD HAAKON 0700 AM 2.07 13 W MARTIN SD BENNETT 0600 AM 2.00 11 ENE WANBLEE SD JACKSON 0733 AM STORM TOTAL RAIN. PILES OF SMALL HAIL STILL ON THE GROUND THIS MORNING 2.00 8 N QUINN SD PENNINGTON 0424 PM 1.55 11 W PHILIP SD HAAKON 0400 PM 1.55" OF RAIN FROM 2 PM TO 4 PM 1.44 5 E ELM SPRINGS SD MEADE 0700 AM 1.40 7 N KIRLEY SD HAAKON 0700 AM 1.29 4 W MARTIN SD BENNETT 1126 PM 1.27 6 NNW KIRLEY SD HAAKON 1031 AM 1.12 3 WNW KADOKA SD JACKSON 0530 AM 1.09 4 WSW WANBLEE SD JACKSON 0700 AM 1.03 17 NW WHITE RIVER SD MELLETTE 0700 AM 1.01 6 SSW MYSTIC SD PENNINGTON 0700 AM 1.00 7 WSW WANBLEE SD JACKSON 0900 PM ONE INCH OF RAIN FROM 0730 PM TO 900 PM. 0.93 3 E PHILIP SD HAAKON 0900 PM 0.91 7 NNE ELLSWORTH AFB SD MEADE 1155 PM 0.90 8 E MARTIN SD BENNETT 0700 AM 24-HOUR RAINFALL. 0.73 2 W DEERFIELD RES SD PENNINGTON 0245 PM 0.73" IN ABOUT AN HOUR FROM 145 PM TO 245 PM 0.62 14 E BEAR BUTTE STATE P SD MEADE 0330 PM RAINFALL FROM 130 PM TO 330 PM.
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