
A strong atmospheric river will continue moderate to heavy rainfall with possible flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. today into Thursday. Additional impacts are likely into Friday with a cold front. A fast-moving storm system will cross the Northeast U.S. today into Thursday with gusty to high winds and areas of rain and high elevation snow showers. Read More >
Severe thunderstorms developed across northeastern Wyoming and western South Dakota during the afternoon of Saturday, July 16. Strong winds knocked down trees, destroyed a shed, moved a car, tipped a travel trailer, and and caused damage to a home northeast of Newell. A tree also fell on a car in Rapid City. Here are some of the photos and storm reports relayed to the National Weather Service.
Photo of a severe thunderstorm near Sundance (Photo courtesy of Meghan & Dave Porter):

Wind damage just northeast of Newell (photo courtesy of Butte County Emergency Management):
Wind damage just northeast of Newell (photo courtesy of Butte County Emergency Management):
Wind damage just northeast of Newell (photo courtesy of Butte County Emergency Management):
Tree knocked down in Rapid City (photo courtesy of Fire Department):
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
------ ----------------------- -- -------------- -------
2.00 11 ENE RECLUSE WY CAMPBELL 0350 PM
LAST 10 MINUTES
1.75 5 E PORCUPINE SD OGLALA LAKOTA 0630 PM
HAIL COVERED THE GROUND
1.75 3 SE FARMINGDALE SD PENNINGTON 0320 PM
MOST OF THE HAIL WAS QUARTER SIZE... BUT SOME
WAS UP TO GOLFBALL SIZE. HAIL LASTED 20
MINUTES. NOT MUCH RAIN.
1.25 6 NNE ALADDIN WY CROOK 0508 PM
HAIL BROKE A WINDOW ON THE HOUSE.
1.25 11 ENE RECLUSE WY CAMPBELL 0350 PM
1.25 5 NNE RECLUSE WY CAMPBELL 0345 PM
1.25 12 ENE ECHETA WY CAMPBELL 0335 PM
1.00 1 NNW PIEDMONT SD MEADE 0539 PM
PEA TO QUARTER SIZE HAIL COVERING THE GROUND.
1.00 7 NE SMITHWICK SD FALL RIVER 0530 PM
1.00 6 SSE BROWNSVILLE SD LAWRENCE 0518 PM
VERY STRONG WINDS AS THE STORM BEGAN AND THEN
HAD HAIL FROM PEA TO QUARTER SIZE.
1.00 15 NNW RECLUSE WY CAMPBELL 0430 PM
0.21 OF RAIN AND MAINLY 1/2 HAIL. SOME PIECES
WERE LARGER.
1.00 2 NE SUNDANCE WY CROOK 0430 PM
1.00 4 N WESTON WY CAMPBELL 0400 PM
1.00 6 NE ELLSWORTH AFB SD MEADE 0300 PM
0.88 4 NNW DOWNTOWN RAPID CI SD PENNINGTON 0250 PM
TSTM WIND REPORTS LISTED BY SPEED (MPH)
SPEED LOCATION ST COUNTY TIME
------ ----------------------- -- -------------- -------
85.00 1 WSW RED ELM SD ZIEBACH 0740 PM
79.00 7 E WANBLEE SD JACKSON 0720 PM
79.00 13 NW DOWNTOWN BELLE FO SD BUTTE 0530 PM
70.00 NEWELL SD BUTTE 0600 PM
WIND BLEW OVER A 60 FT RADIO TOWER IN NEWELL.
64.00 1 NNE FAITH SD MEADE 0722 PM
62.00 8 S PLAINVIEW SD MEADE 0730 PM
62.00 9 W JEWEL CAVE SD CUSTER 0355 PM
60.00 11 ENE WANBLEE SD JACKSON 0710 PM
WIND GUSTS OF 40 TO 60 MPH
60.00 4 N DOWNTOWN RAPID CITY SD PENNINGTON 0552 PM
60.00 4 WNW NEMO SD LAWRENCE 0520 PM
1/2 HAIL COVERED THE GROUND
60.00 6 SSE BROWNSVILLE SD LAWRENCE 0518 PM
VERY STRONG WINDS AS THE STORM BEGAN AND THEN
HAD HAIL FROM PEA TO QUARTER SIZE.
60.00 9 W JEWEL CAVE SD CUSTER 0400 PM
WINDS OF 50 TO 60 MPH.
60.00 11 ENE RECLUSE WY CAMPBELL 0350 PM
57.00 11 SW PARMELEE SD TODD 0740 PM
56.00 RAPID CITY AIRPORT SD PENNINGTON 0605 PM
56.00 1 W BOX ELDER SD PENNINGTON 0600 PM
54.00 15 SSE MISSION SD TODD 0820 PM
54.00 1 E DOWNTOWN RAPID CITY SD PENNINGTON 0554 PM
53.00 7 SSE MEADOW SD PERKINS 0720 PM
52.00 6 W PARMELEE SD TODD 0740 PM
51.00 2 SW BRIDGER SD ZIEBACH 0750 PM
51.00 1 NNW PIEDMONT SD MEADE 0539 PM
PEA TO QUARTER SIZE HAIL COVERING THE GROUND.
50.00 3 WSW FAIRBURN SD CUSTER 0530 PM
RAIN AMOUNTS (INCHES)
AMOUNT LOCATION ST COUNTY TIME
------ ----------------------- -- -------------- -------
1.22 1 NNW PIEDMONT SD MEADE 0556 PM
30 MINUTE RAINFALL
0.60 6 W WANBLEE SD JACKSON 0705 PM
RAIN FELL IN ABOUT 30 MINUTES