Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >
Overview
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A powerful early winter storm moved from the Rockies across the northern Plains. Snow began over northeastern Wyoming during the night of Monday, October 11, leaving almost a foot of snow by morning. The snow spread over the Black Hills on Tuesday, October 12, accumulating one to two feet over the northern Black Hills and northern foothills. Heavy rain fell over the plains of western South Dakota, with many locations receiving one to four inches. Strong winds also occurred on the plains, where gusts reached 60 to 80 mph. |
 Heavy snow on trees in Spearfish Photo courtesy of Amber K |
Snow
PRELIMINARY SNOW TOTALS LISTED BY MAGNITUDE LOCATION SNOWFALL (inches) TIME OF REPORT 3 ENE Deadwood SD 27.0 225 PM 10/13/2021 Deadwood SD 22.5 930 AM 10/13/2021 3 SW Whitewood SD 22.0 930 AM 10/13/2021 1 N Whitewood SD 21.4 1000 AM 10/13/2021 5 SSE Whitewood SD 21.4 1245 PM 10/13/2021 1 N Deadwood SD 20.6 1130 AM 10/13/2021 4 WNW Terry Peak SD 20.0 1045 AM 10/13/2021 Wright WY 20.0 733 PM 10/13/2021 Rozet WY 18.2 1200 PM 10/13/2021 5 W Downtown Gillette WY 18.0 800 AM 10/13/2021 2 NNW Saint Onge SD 18.0 130 PM 10/13/2021 Whitewood SD 17.0 1000 AM 10/13/2021 6 N Downtown Gillette WY 16.6 900 AM 10/13/2021 3 NE Whitewood SD 16.0 953 AM 10/13/2021 2 NE Downtown Gillette WY 16.0 1000 AM 10/13/2021 6 S Deadwood SD 16.0 1200 PM 10/13/2021 9 W Downtown Spearfish SD 15.0 859 AM 10/13/2021 11 S Deadwood SD 14.0 900 AM 10/13/2021 4 SE Deerfield SD 14.0 802 AM 10/13/2021 2 N Downtown Spearfish SD 14.0 900 AM 10/13/2021 Spearfish SD 14.0 800 AM 10/13/2021 4 SSW Hill City SD 14.0 544 AM 10/13/2021 Downtown Gillette WY 13.8 1000 AM 10/13/2021 3 WNW Spearfish SD 13.5 700 AM 10/13/2021 5 SW Nemo SD 13.0 1200 PM 10/13/2021 2 WNW Downtown Spearfish SD 13.0 748 AM 10/13/2021 4 NNW Whitewood SD 12.8 600 AM 10/13/2021 1 NNE Sundance SD 12.3 1258 AM 10/14/2021 Hill City SD 12.0 1200 PM 10/13/2021 Colony WY 12.0 110 PM 10/13/2021 11 NE Weston WY 12.0 700 AM 10/13/2021 4 NW Hill City SD 12.0 600 AM 10/13/2021 6 SE Belle Fourche SD 12.0 930 AM 10/13/2021 Alva WY 12.0 600 AM 10/13/2021 4 SE Downtown Gillette WY 12.0 430 PM 10/13/2021 1 SSE Carlile WY 12.0 100 PM 10/13/2021 11 SW Cheyenne Crossing SD 12.0 1000 AM 10/13/2021 6 SW Beulah WY 12.0 800 AM 10/13/2021 2 E Sturgis SD 11.5 600 PM 10/13/2021 1 S Downtown Spearfish SD 11.0 730 AM 10/13/2021 17 NW Belle Fourche Reservoir 10.0 100 PM 10/13/2021 Camp Crook SD 9.0 100 PM 10/13/2021 Moorcroft WY 9.0 1225 PM 10/13/2021 Rockerville SD 9.0 1000 AM 10/13/2021 1 ESE Pactola Reservoir SD 9.0 800 AM 10/14/2021 7 NNW Spearfish SD 8.8 700 AM 10/13/2021 1 NNW Piedmont SD 8.0 331 PM 10/13/2021 10 WNW Rapid City SD 7.2 700 AM 10/13/2021 1 ESE Newcastle WY 7.2 800 AM 10/14/2021 Pine Haven WY 7.0 1227 PM 10/13/2021 Summerset SD 7.0 1045 AM 10/13/2021 8 W Rapid City SD 6.7 700 AM 10/13/2021 7 W Rapid City SD 6.1 700 AM 10/13/2021 Mount Rushmore SD 6.0 1158 PM 10/13/2021 8 N Downtown Rapid City SD 6.0 900 AM 10/13/2021 2 W Custer SD 6.0 900 PM 10/13/2021 1 ESE Wright WY 5.0 700 AM 10/13/2021 Sundance WY 4.5 600 AM 10/13/2021 5 E Piedmont SD 4.5 600 AM 10/13/2021 8 N Newcastle WY 4.0 700 AM 10/13/2021 4 S Rapid City SD 4.0 803 AM 10/13/2021 6 NNE Rapid City SD 3.5 700 AM 10/13/2021 3 WNW Rapid City SD 3.5 700 AM 10/13/2021 1 E Downtown Rapid City SD 3.4 724 PM 10/13/2021 4 NW Downtown Rapid City SD 3.0 600 AM 10/14/2021 2 NW Rapid City SD 3.0 700 AM 10/13/2021 4 NE Rapid City SD 3.0 600 AM 10/13/2021 26 WSW Newcastle WY 2.0 700 AM 10/13/2021
Rain & Wind
Liquid precipitation from 11 am MDT Monday, October 11 through 11 am MDT Thursday, October 14
PRELIMINARY RAINFALL TOTALS LISTED BY MAGNITUDE LOCATION RAIN (inches) TIME OF REPORT 9 NNE Union Center SD 4.85 1230 PM 10/13/2021 4 NNW Whitewood SD 4.19 600 AM 10/14/2021 Spearfish SD 3.61 800 AM 10/13/2021 Buffalo SD 3.50 1005 AM 10/13/2021 Box Elder SD 3.50 900 AM 10/13/2021 New Underwood SD 3.25 1000 AM 10/13/2021 Vale SD 3.23 730 AM 10/14/2021 4 SE Folsom SD 3.21 1025 AM 10/13/2021 2 E Elm Springs SD 3.13 123 PM 10/13/2021 22 SSW Wasta SD 3.11 700 AM 10/13/2021 12 WSW Hereford SD 3.10 717 PM 10/13/2021 Ardmore SD 3.00 1000 AM 10/13/2021 5 ESE Elm Springs SD 3.00 826 AM 10/13/2021 1 NNW Piedmont SD 2.94 715 PM 10/13/2021 4 S New Underwood SD 2.90 900 AM 10/13/2021 3 NE Scenic SD 2.90 1000 AM 10/13/2021 4 NE Rapid City SD 2.90 600 AM 10/13/2021 6 ESE Box Elder SD 2.85 700 AM 10/13/2021 4 NNW Elm Springs SD 2.83 600 AM 10/13/2021 10 ESE Hermosa SD 2.81 700 AM 10/13/2021 2 W Hermosa SD 2.80 1000 AM 10/13/2021 26 N Wall SD 2.80 200 PM 10/13/2021 2 N Hermosa SD 2.75 800 AM 10/13/2021 3 W Stoneville SD 2.75 800 AM 10/13/2021 Wall SD 2.70 900 AM 10/13/2021 9 NW Wall SD 2.62 700 AM 10/13/2021 Shadehill SD 2.60 1200 PM 10/13/2021 2 NE Box Elder SD 2.57 800 AM 10/13/2021 9 E Hermosa SD 2.55 1000 AM 10/13/2021 3 ENE Newell SD 2.52 700 AM 10/13/2021 6 NNE Rapid City SD 2.51 700 AM 10/13/2021 Hermosa SD 2.51 600 AM 10/13/2021 24 SW Bison SD 2.49 700 AM 10/13/2021 4 SSW Hill City SD 2.46 544 AM 10/13/2021 6 W Hermosa SD 2.42 700 AM 10/13/2021 7 W Rapid City SD 2.42 700 AM 10/13/2021 3 WNW Rapid City SD 2.38 700 AM 10/13/2021 5 WNW Hermosa SD 2.37 910 AM 10/13/2021 9 W Bison SD 2.35 700 AM 10/13/2021 2 ENE Wall SD 2.34 800 AM 10/13/2021 10 WNW Rapid City SD 2.33 700 AM 10/13/2021 Tilford SD 2.32 700 AM 10/13/2021 3 SE Buffalo Gap SD 2.30 1045 AM 10/13/2021 6 NNE Stoneville SD 2.26 640 AM 10/13/2021 Argyle SD 2.25 957 AM 10/13/2021 11 NE Weston WY 2.25 700 AM 10/14/2021 2 NW Rapid City SD 2.25 700 AM 10/13/2021 14 S Reva SD 2.20 828 AM 10/13/2021 5 E Piedmont SD 2.20 600 AM 10/13/2021 4 S Rapid City SD 2.20 803 AM 10/13/2021 4 N Downtown Rapid City SD 2.13 725 AM 10/13/2021 11 NW Union Center SD 2.09 700 AM 10/13/2021 8 W Rapid City SD 2.09 700 AM 10/13/2021 12 SW Dupree SD 2.07 201 PM 10/13/2021 8 NNE Box Elder SD 2.04 557 AM 10/13/2021 10 WSW Red Elm SD 2.00 751 AM 10/14/2021 1 SW Hermosa SD 1.98 853 AM 10/13/2021 20 NE Creighton SD 1.97 1217 PM 10/13/2021 36 W Faith SD 1.95 745 AM 10/13/2021 3 SE Pringle SD 1.90 1000 AM 10/13/2021 8 WNW Usta SD 1.90 1042 AM 10/13/2021 Rapid City SD 1.88 800 AM 10/13/2021 2 SW Howes SD 1.85 700 AM 10/13/2021 7 NNW Spearfish SD 1.84 700 AM 10/13/2021 2 NNW Newell SD 1.80 700 AM 10/13/2021 10 E Pine Ridge SD 1.80 1200 PM 10/13/2021 4 NW Downtown Rapid City SD 1.78 700 AM 10/13/2021 4 W Hot Springs SD 1.72 700 AM 10/13/2021 3 WNW Spearfish SD 1.71 700 AM 10/13/2021 1 E Downtown Rapid City SD 1.61 724 PM 10/13/2021 Hot Springs SD 1.53 700 AM 10/13/2021 Long Valley SD 1.50 900 AM 10/13/2021 13 SSE Wall SD 1.49 800 AM 10/13/2021 1 NNE Edgemont SD 1.49 700 AM 10/13/2021 2 ENE Edgemont SD 1.48 700 AM 10/13/2021 21 NW Philip SD 1.48 800 AM 10/13/2021 3 ENE Kyle SD 1.35 1000 AM 10/13/2021 21 NW Faith SD 1.30 600 AM 10/13/2021 7 NNE Batesland SD 1.25 800 AM 10/13/2021 6 SW Beulah WY 1.20 800 AM 10/13/2021 4 WSW Wanblee SD 1.18 700 AM 10/13/2021 Edgemont SD 1.16 700 AM 10/13/2021 15 NW Buffalo SD 1.11 700 AM 10/13/2021 14 ENE Martin SD 1.09 600 AM 10/13/2021 8 E Martin SD 1.00 700 AM 10/13/2021 18 N Philip SD 1.00 900 AM 10/13/2021 MAXIMUM OBSERVED WIND GUSTS LISTED BY MAGNITUDE LOCATION MAX WIND (MPH) TIME OF REPORT
3 NW Wasta SD 79 1225 PM 10/13/2021 5 WNW New Underwood SD 74 930 AM 10/13/2021 4 E Cactus Flat SD 71 245 PM 10/13/2021 3 E Philip SD 69 300 PM 10/13/2021 4 SSE Witten SD 68 121 PM 10/13/2021 1 NE Midland SD 68 410 PM 10/13/2021 10 W Edgemont SD 67 735 AM 10/13/2021 Wasta SD 67 916 AM 10/13/2021 1 NE Winner SD 66 350 PM 10/13/2021 3 NNW Scenic SD 65 935 AM 10/13/2021 8 S Wall SD 64 420 PM 10/13/2021 Rapid City Regional Airport SD 64 751 AM 10/13/2021 12 E Oelrichs SD 64 1250 PM 10/13/2021 9 ENE Belvidere SD 63 340 PM 10/13/2021 Ellsworth AFB SD 62 743 AM 10/13/2021 3 ESE Pine Ridge SD 61 234 PM 10/13/2021 7 E Sturgis SD 61 1135 AM 10/13/2021 15 SSE Mission SD 61 126 PM 10/13/2021 3 W Union Center SD 60 425 PM 10/13/2021 6 W Parmelee SD 59 328 PM 10/13/2021 1 W Box Elder SD 59 1041 AM 10/13/2021 3 WSW Angostura Reservoir SD 59 1215 PM 10/13/2021 2 SW Bridger SD 58 205 PM 10/13/2021 1 E Downtown Rapid City SD 58 922 AM 10/13/2021 8 SSW Folsom SD 57 839 AM 10/13/2021 7 E Wanblee SD 56 435 PM 10/13/2021 1 N Buffalo SD 56 539 PM 10/13/2021 Wewela SD 56 335 PM 10/13/2021 12 WSW Castle Rock SD 55 809 AM 10/13/2021 13 SSW Reva SD 55 420 PM 10/13/2021 1 ENE Mud Butte SD 55 546 PM 10/13/2021 8 N Redig SD 53 106 PM 10/13/2021 11 SW Parmelee SD 53 1130 AM 10/13/2021 2 E Cottonwood SD 52 135 PM 10/13/2021 7 ESE Rosebud SD 52 130 PM 10/13/2021 9 SW Batesland SD 51 215 PM 10/13/2021 2 W Hamill SD 51 345 PM 10/13/2021 1 NNE Faith SD 51 600 PM 10/13/2021 4 S Downtown Rapid City SD 51 1150 AM 10/13/2021 7 NNE Ralph SD 50 450 PM 10/13/2021
Photos & Video
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| Eleven inches of snow in Spearfish Photo courtesy of Amber K |
Heavy snow buried cars in Spearfish Photo courtesy of Breanne H |
Heavy snow southwest of Whitewood Photo courtesy of Sharon K |
Heavy snow near Belle Fourche Photo courtesy of Robbi B |
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| Heavy snow east of Rochford Photo courtesy of Rob R |
Heavy snow in Spearfish Canyon Photo courtesy of Shari B |
Heavy snow south of Deadwood Photo courtesy of Michele S |
Heavy snow in Beulah, WY Photo courtesy of Doris P |
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| Over 22 inches of snow in Deadwood Photo courtesy of Sianna G |
Heavy snow in Lead Photo courtesy of Lacy B |
Heavy snow in Boulder Canyon west of Sturgis Photo courtesy of Callie T |
Heavy snow between Whitewood and Sturgis Photo courtesy of Kaleigh C |
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| Fourteen inches of snow in Gillette Photo courtesy of Chad T |
Heavy snow in Gillette Photo courtesy of Debbie S |
Heavy snow in Gillette Photo courtesy of Lillian S |
Heavy rain fills the Belle Fourche River near Hereford, SD Photo courtesy of Paula P |
Radar
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