Back-to-back powerful Pacific storm systems to impact the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher elevation mountain snow. A strong, long-duration atmospheric river will accompany the Pacific storms, bringing excessive rainfall and flash flooding to southwest Oregon and northwest California through the week. Read More >
Overview
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On February 24th through 25th, 2020, an elongated area of low pressure moved slowly from eastern Montana through South Dakota. Significant moisture was ingested into the system, resulting in moderate to heavy snow across northeastern Wyoming into western South Dakota. Upslope-enhanced snow developed over the northern and northeastern Black Hills and foothills, where up to 31" of snow fell over two days. Several inches of snow fell on the surrounding plains. Thankfully, strong winds weren't much of an issue with this storm, although some breezy northerly winds created some patchy blowing snow and reduced visibility at times. |
 Deer Mountain Courtesy Cathy E. |
Snow
Storm total snowfall from February 24-25, 2020. The snowfall map is preliminary and may change as all information becomes available.
February 24-25, 2020 Preliminary Snowfall Map
The storm reports listed below are in descending order and may not necessarily be the final storm reports. Snow reports listed by amount INCHES LOCATION ST COUNTY TIME ------ ----------------------- -- -------------- ------- 31.00 2 ESE LEAD SD LAWRENCE 1125 AM 30.00 5 SE CHEYENNE CROSSING SD LAWRENCE 1230 PM 30.00 2 S TERRY PEAK SD LAWRENCE 1020 AM 27.50 3 SSE LEAD SD LAWRENCE 1017 AM 20.00 11 SW CHEYENNE CROSSING SD LAWRENCE 1105 AM 20.00 10 S DEADWOOD SD LAWRENCE 1014 AM 20.00 6 SSW LEAD SD LAWRENCE 0700 AM 18.00 DEADWOOD SD LAWRENCE 0935 AM 17.00 3 ENE DEADWOOD SD LAWRENCE 1151 AM 17.00 LEAD SD LAWRENCE 0900 AM 15.80 1 NNW PIEDMONT SD MEADE 1227 PM 15.00 HULETT WY CROOK 0650 AM 14.00 2 NNW SAINT ONGE SD LAWRENCE 1220 PM 14.00 1 SW ROCKERVILLE SD PENNINGTON 1034 AM 14.00 DWTN SPEARFISH SD LAWRENCE 0839 AM 13.00 1 W WHITEWOOD SD LAWRENCE 1146 AM 13.00 2 S DWTN RAPID CITY SD PENNINGTON 1029 AM 12.00 SUMMERSET SD MEADE 1036 AM 12.00 NNW DWTN SPEARFISH SD LAWRENCE 0830 AM 12.00 SPEARFISH SD LAWRENCE 0800 AM 11.50 SUMMERSET SD MEADE 0930 AM 11.50 1 NNW PIEDMONT SD MEADE 0631 AM 11.00 2 SW DWTN RAPID CITY SD PENNINGTON 0915 AM 10.60 1 E DWTN RAPID CITY SD PENNINGTON 1057 AM 10.00 1 SSE BELLE FOURCHE SD BUTTE 1237 PM 10.00 4 S DEVILS TOWER WY CROOK 1233 PM 10.00 3 SW DWTN RAPID CITY SD PENNINGTON 1043 AM 10.00 1 E DWTN RAPID CITY SD PENNINGTON 1040 AM 10.00 PINE HAVEN WY CROOK 1036 AM 10.00 4 W HERMOSA SD CUSTER 1035 AM 10.00 5 WNW HERMOSA SD CUSTER 1027 AM 10.00 1 SE BUCKHORN WY WESTON 0854 AM 10.00 4 S DWTN RAPID CITY SD PENNINGTON 0808 AM 9.50 STURGIS SD MEADE 1033 AM 9.50 3 WNW DWTN RAPID CITY SD PENNINGTON 0700 AM 9.50 ROCKERVILLE SD PENNINGTON 0530 AM 9.10 DUPREE SD LAWRENCE 0900 AM 9.00 2 S DWTN RAPID CITY SD PENNINGTON 1147 AM 9.00 7 W HERMOSA SD CUSTER 0610 AM 8.70 1 WSW DWTN RAPID CITY SD PENNINGTON 0659 AM 8.50 5 E PIEDMONT SD MEADE 0700 AM 8.50 5 E PIEDMONT SD MEADE 0700 AM 8.00 3 ENE PINE HAVEN WY CROOK 0932 AM 8.00 6 NNE DWTN RAPID CITY SD MEADE 0830 AM 8.00 1 SW HERMOSA SD CUSTER 0742 AM 8.00 2 NW DWTN RAPID CITY SD PENNINGTON 0700 AM 8.00 5 SW DWTN RAPID CITY SD PENNINGTON 0700 AM 8.00 7 NNW DWTN SPEARFISH SD LAWRENCE 0700 AM 8.00 2 ESE DEVILS TOWER WY CROOK 0600 AM 8.00 SUNDANCE WY CROOK 0600 AM 8.00 HERMOSA SD CUSTER 0500 AM 7.00 2 W DWTN SPEARFISH SD LAWRENCE 0726 AM 7.00 3 WNW DWTN SPEARFISH SD LAWRENCE 0700 AM 6.50 1 SSE BELLE FOURCHE SD BUTTE 0700 AM 6.50 1 SSE BELLE FOURCHE SD BUTTE 0700 AM 6.00 WALL SD PENNINGTON 1222 PM 6.00 3 NNE CREIGHTON SD PENNINGTON 1221 PM 6.00 5 ENE CUSTER SD CUSTER 1219 PM 6.00 COLONY WY CROOK 0934 AM 6.00 UPTON WY WESTON 0931 AM 6.00 10 N DWTN GILLETTE WY CAMPBELL 0917 AM 6.00 6 SW BEULAH WY CROOK 0800 AM 6.00 8 NNE BOX ELDER SD MEADE 0700 AM 6.00 4 NW DWTN RAPID CITY SD PENNINGTON 0600 AM 6.00 4 NE DWTN RAPID CITY SD PENNINGTON 0600 AM 5.90 4 NNW WHITEWOOD SD LAWRENCE 0530 AM 5.50 DWTN GILLETTE WY CAMPBELL 1032 AM 5.50 1 W NEWELL SD BUTTE 0800 AM 5.50 1 SSW RAPID VALLEY SD PENNINGTON 0600 AM 5.00 7 SSW CREIGHTON SD PENNINGTON 1221 PM 5.00 5 ESE ELM SPRINGS SD MEADE 1221 PM 5.00 CAMP CROOK SD HARDING 1004 AM 5.00 MOORCROFT WY CROOK 0932 AM 5.00 8 NW ROCKYPOINT WY CAMPBELL 0916 AM 5.00 3 SE HARDING SD HARDING 0800 AM 5.00 PACTOLA RES SD PENNINGTON 0800 AM 5.00 KADOKA SD JACKSON 0700 AM 5.00 ORAL SD FALL RIVER 0700 AM 5.00 HEREFORD SD MEADE 0611 AM 5.00 HERMOSA SD CUSTER 0600 AM 5.00 4 SE DEERFIELD SD PENNINGTON 0333 AM 4.00 8 WSW SWETT SD BENNETT 1224 PM 4.00 6 NNW KYLE SD OGLALA LAKOTA 1223 PM 4.00 PORCUPINE SD OGLALA LAKOTA 1223 PM 4.00 19 S QUINN SD PENNINGTON 1222 PM 4.00 6 N SCENIC SD PENNINGTON 1031 AM 4.00 BISON SD PERKINS 1005 AM 4.00 BUFFALO SD HARDING 1003 AM 4.00 DWTN GILLETTE WY CAMPBELL 0918 AM 4.00 RED OWL SD MEADE 0705 AM 4.00 2 SSW NORRIS SD MELLETTE 0700 AM 4.00 21 NW FAITH SD PERKINS 0700 AM 4.00 8 E MARTIN SD BENNETT 0600 AM 3.70 3 WNW KADOKA SD JACKSON 0700 AM 3.50 14 SSE ROZET WY CAMPBELL 0918 AM 3.50 HOT SPRINGS SD FALL RIVER 0700 AM 3.50 OPAL SD MEADE 0700 AM 3.50 17 NW WHITE RIVER SD MELLETTE 0600 AM 3.20 HILL CITY SD PENNINGTON 0700 AM 3.00 1 WNW OGLALA SD OGLALA LAKOTA 1224 PM 3.00 13 S RED SHIRT SD OGLALA LAKOTA 1223 PM 3.00 REVA SD HARDING 1003 AM 3.00 8 NE RENO JUNCTION WY CAMPBELL 0918 AM 3.00 2 ENE WESTON WY CAMPBELL 0916 AM 3.00 10 SE MEADOW SD PERKINS 0700 AM 3.00 8 WNW USTA SD PERKINS 0632 AM 3.00 10 ESE HERMOSA SD CUSTER 0630 AM 3.00 4 SSW HILL CITY SD PENNINGTON 0556 AM 2.50 11 NW UNION CENTER SD MEADE 0700 AM 2.50 1 W NEWCASTLE WY WESTON 0700 AM 2.50 ARGYLE SD CUSTER 0655 AM 2.50 13 ENE WHITE RIVER SD MELLETTE 0600 AM 2.30 LEMMON SD PERKINS 1005 AM 2.00 3 SSE SORUM SD PERKINS 1004 AM 2.00 4 N ROCHELLE WY WESTON 0930 AM 2.00 1 SSW RENO JUNCTION WY CAMPBELL 0919 AM 2.00 24 SW BISON SD PERKINS 0700 AM 2.00 9 WSW RED ELM SD ZIEBACH 0642 AM 1.90 1 W DOWNTOWN NEWCASTLE WY WESTON 0900 AM 1.90 1 ESE NEWCASTLE WY WESTON 0800 AM 1.50 1 E CLARETON WY WESTON 0931 AM 1.30 5 SE OLSONVILLE SD TODD 0600 AM 1.10 5 SW LODGEPOLE SD PERKINS 0735 AM 1.00 1 NNE EDGEMONT SD FALL RIVER 0728 AM 1.00 14 S MISSION SD TODD 0700 AM 1.00 EDGEMONT SD FALL RIVER 0700 AM
Photos
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| US14A near Savoy, SD Courtesy SDDOT Webcams |
4S Devil's Tower Courtesy Heike B. |
4S Gillette, WY Courtesy Pat S. |
6N Scenic, SD Courtesy Heather M. |
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| 8SW Rapid City, SD Courtesy Ben N. |
Black Hawk, SD Courtesy Paula R. |
Gillette, WY Courtesy Jill O. |
Highway 85 near Terry Peak Courtesy Amanda P. |
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| Lead, SD Courtesy Shane M. |
Rapid City, SD Courtesy Trevor B. |
Goat in the Snow, SD Courtesy Holly D. |
Spearfish, SD Courtesy Alex E. |
Radar
Radar animation from early February 24 to midday February 25, 2020.
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