Heavy rainfall from scattered thunderstorms is expected across the Southwest, Intermountain West, and Plains. Isolated dry thunderstorms may initiate additional fires across the west. The coastal Carolinas may experience flash floods in the coming days due to repeated thunderstorms. Additionally, a wave of intense summer heat will hit the Southern Plains and central Gulf Coast States this week. Read More >
Overview
Thunderstorms developed across southwestern MN during the afternoon, continuing through the night across southeastern SD, and northwestern IA. These storms became severe, producing large hail (up to 3.5 inches) and damaging wind gusts.
Additional information will likely be added later.
Wind & Hail:
Numerous reports of large, damaging hail and wind damage were received during and following the event.
Wind
Strong winds created a fair amount of damage to trees and structures across the area.
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Damage to a Home Near Davis, SD (Public) |
Tree Downed Near Davis, SD (Kelli DeVries) |
Caption |
Hail
The largest hail stone was 3.5 inches. Numerous other reports of hail were near ping pong ball size or larger.
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3.5 inch hail - N of Sioux Falls (Samantha Locke) |
Large Hail Near Renner, SD (Brittany Thompson) |
Photos & Video
Here are some of the additional photos received during the event.
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| Shelf Cloud Entering Sioux Falls (NWS Employee) |
Blowing Dust Along the Leading Edge - NW Sioux Falls (NWS Employee) |
Radar
Here's a look at how the radar evolved through the event.
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| Radar Loop: 8/5 4 PM to 10 PM CDT | Radar Loop: 8/5 10 PM to 8/6 4 AM |
Storm Reports and Warnings
Here's a look at the warnings we issues as well as the storm reports we received in the map and list below.
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SIOUX FALLS SD
611 PM CDT FRI AUG 6 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1045 PM TSTM WND GST 5 NW BERESFORD 43.13N 96.84W
08/05/2021 E70 MPH LINCOLN SD TRAINED SPOTTER
TREE REPORTED KNOCKED DOWN.
0850 PM HAIL 5 N SIOUX FALLS 43.62N 96.71W
08/05/2021 M3.50 INCH MINNEHAHA SD PUBLIC
VIA PICTURE ON SOCIAL MEDIA.
0904 PM HAIL 5 ESE CROOKS 43.64N 96.71W
08/05/2021 E2.50 INCH MINNEHAHA SD PUBLIC
REPORT VIA SOCIAL MEDIA.
0910 PM HAIL 4 WNW ROWENA 43.54N 96.62W
08/05/2021 E2.00 INCH MINNEHAHA SD NWS EMPLOYEE
0800 PM HAIL 2 E WENTWORTH 43.99N 96.93W
08/05/2021 E1.75 INCH LAKE SD PUBLIC
0743 PM HAIL 8 N COLMAN 44.09N 96.83W
08/05/2021 E1.50 INCH MOODY SD TRAINED SPOTTER
0753 PM HAIL COLMAN 43.98N 96.82W
08/05/2021 E1.50 INCH MOODY SD PUBLIC
REPORT VIA SOCIAL MEDIA.
0900 PM HAIL BRANDON 43.59N 96.58W
08/05/2021 E1.50 INCH MINNEHAHA SD PUBLIC
VIA SOCIAL MEDIA PICTURE.
0800 PM HAIL 3 ESE WENTWORTH 43.98N 96.92W
08/05/2021 E1.50 INCH LAKE SD PUBLIC
REPORT VIA SOCIAL MEDIA WITH PHOTOS.
0725 PM HAIL ELKTON 44.23N 96.48W
08/05/2021 E1.50 INCH BROOKINGS SD PUBLIC
REPORT VIA SOCIAL MEDIA WITH PHOTO.
0729 PM HAIL 4 SE MADISON 43.97N 97.05W
08/05/2021 E1.25 INCH LAKE SD PUBLIC
REPORT VIA SOCIAL MEDIA WITH A PHOTO.
0715 PM HAIL 9 N COLMAN 44.11N 96.83W
08/05/2021 E1.00 INCH MOODY SD TRAINED SPOTTER
0824 PM HAIL DELL RAPIDS 43.82N 96.72W
08/05/2021 M1.00 INCH MINNEHAHA SD PUBLIC
VIA SOCIAL MEDIA.
0835 PM HAIL BALTIC 43.76N 96.73W
08/05/2021 E1.00 INCH MINNEHAHA SD PUBLIC
REPORT VIA SOCIAL MEDIA.
0908 PM HAIL 4 WNW ROWENA 43.54N 96.62W
08/05/2021 E1.00 INCH MINNEHAHA SD NWS EMPLOYEE
1149 PM HAIL CROOKS 43.66N 96.81W
08/05/2021 M1.00 INCH MINNEHAHA SD PUBLIC
VIDEO VIA SOCIAL MEDIA.
0106 AM HAIL 1 SW CANTON 43.30N 96.60W
08/06/2021 M1.00 INCH LINCOLN SD PUBLIC
REPORT VIA SOCIAL MEDIA. TIME ESTIMATED VIA
RADAR.
0726 PM HAIL ELKTON 44.24N 96.48W
08/05/2021 E1.00 INCH BROOKINGS SD PUBLIC
0735 PM HAIL ELKTON 44.23N 96.48W
08/05/2021 E1.00 INCH BROOKINGS SD TRAINED SPOTTER
0755 PM HAIL EDGERTON 43.88N 96.13W
08/05/2021 M1.00 INCH PIPESTONE MN PUBLIC
VIA SOCIAL MEDIA. TIME ESTIMATED VIA RADAR.
0530 PM HAIL 3 SW ARCO 44.36N 96.22W
08/05/2021 E1.00 INCH LINCOLN MN PUBLIC
REPORT FROM MPING: QUARTER (1.00 IN.).
1138 PM HAIL 4 ESE SIOUX FALLS 43.53N 96.66W
08/05/2021 E0.88 INCH MINNEHAHA SD NWS EMPLOYEE
REPORT VIA SOCIAL MEDIA.
0950 PM HAIL 5 E CANISTOTA 43.60N 97.18W
08/05/2021 E0.88 INCH MCCOOK SD PUBLIC
REPORT VIA SOCIAL MEDIA WITH PHOTOS.
1020 PM TSTM WND DMG 3 E DAVIS 43.27N 96.94W
08/05/2021 TURNER SD PUBLIC
ROOF DAMAGE TO HOME WITH PORTION OF ROOF
MISSING SHINGLES. PICTURE VIA SOCIAL MEDIA
AND TIME ESTIMATED VIA RADAR.
1020 PM TSTM WND DMG 3 ENE DAVIS 43.27N 96.94W
08/05/2021 TURNER SD PUBLIC
STRUCTURAL DAMAGE TO GARAGE WITH BACK WALL
BLOWN OUT. PICTURES VIA SOCIAL MEDIA. TIME
ESTIMATED VIA RADAR.
0850 PM TSTM WND DMG 2 WNW ROWENA 43.53N 96.60W
08/05/2021 MINNEHAHA SD PUBLIC
REPORT VIA SOCIAL MEDIA OF DAMAGE TO A
BUILDING.
0858 PM TSTM WND DMG 3 W ROWENA 43.52N 96.61W
08/05/2021 MINNEHAHA SD PUBLIC
DELAYED REPORT. PORTION OF DECK OVERHANG AND
ROOF BLOWN OFF. TIME ESTIMATED VIA RADAR.
0859 PM TSTM WND DMG 4 ESE SIOUX FALLS 43.53N 96.65W
08/05/2021 MINNEHAHA SD PUBLIC
SEVERAL 8 YEAR OLD PINE TREES UPROOTED. TIME
ESTIMATED BY RADAR. VIA SOCIAL MEDIA
PICTURE.
0913 PM TSTM WND DMG 2 WNW ROWENA 43.53N 96.60W
08/05/2021 MINNEHAHA SD NWS EMPLOYEE
SEVERAL LARGE TREE BRANCHES DOWN AT THE MARY
JO WEGNER ARBORETUM, SOME AS LARGE AS A FOOT
IN DIAMETER. TIME ESTIMATED VIA RADAR AND
NEARBY GROUND OBSERVATIONS.
0712 PM TSTM WND DMG 2 S HOLLAND 44.07N 96.19W
08/05/2021 PIPESTONE MN PUBLIC
FARMER REPORTED FLATTENED CORN IN A FIELD
ABOUT 1.5 MILES SOUTH OF HOLLAND. TIME
ESTIMATED FROM RADAR.
0800 PM TSTM WND DMG 6 NNE KENNETH 43.83N 96.01W
08/05/2021 NOBLES MN PUBLIC
STRONG WINDS IN AND AROUND LEOTA, MN.
RESULTED IN A FEW LARGE TREES TOPPLED AND
MULTIPLE LARGE LIMBS WERE BROKEN.
0837 PM TSTM WND DMG 2 S LISMORE 43.72N 95.95W
08/05/2021 NOBLES MN TRAINED SPOTTER
STRONG THUNDERSTORM WINDS APPROXIMATELY 2
MILES SOUTH OF LISMORE MN RESULTED IN
MULTIPLE FIELDS OF FLATTENED CORN. IN
ADDITION, WIND DAMAGE WAS NOTED TO
SURROUNDING BEAN FIELDS. REPORT ALSO
INCLUDED HEAVY RAIN IN THE AREA WITH PEA TO
DIME SIZED HAIL.
0442 PM TSTM WND DMG IVANHOE 44.46N 96.24W
08/05/2021 LINCOLN MN TRAINED SPOTTER
8 INCH DIAMETER BRANCH DOWN.
0530 PM HAIL 3 SW ARCO 44.36N 96.22W
08/05/2021 NAN INCH LINCOLN MN PUBLIC
MPING REPORT OF 1 INCH HAIL.
1222 AM TSTM WND DMG 3 SE SIOUX CITY 42.47N 96.36W
08/06/2021 WOODBURY IA PUBLIC
CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 3
SE SIOUX CITY. PICTURE VIA SOCIAL MEDIA OF A
FEW 4-6 INCH TREE BRANCHES DOWN IN THE
MORNINGSIDE NEIGHBORHOOD. TIME ESTIMATED VIA
RADAR.
Rain Reports
Here are the 24 hour rainfall totals through early Friday morning.
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