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Overview
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An early morning storm system impacted parts of central and east central South Dakota. While large hail fell in the Pierre area, parts of Hamlin and Deuel counties were the hardest hit. This area experienced winds in the 80 to 90 mph range, along with large hail. Northwest of Castlewood multiple power poles were downed blocking the intersection of Highways 81 and 22. In the city of Castlewood winds caused structural damage, tree damage, and the wind-driven hail broke through windows and punched holes in siding. The assisted living was evacuated due to damage on the north end of the building. No travel was advised in the city due to debris blocking roadways. Further southeast, hail up to the size of golf balls damaged homes in the town of Astoria. Significant crop damage was also noted along the path of this storm. |
 Image from the Sentinel 2A Satellite via Carl Jones, showing a hail scar across the landscape |
Wind & Hail:
Pierre
Hail ranging in size from nickels to golf balls fell in Pierre, SD. In some locations there was so much hail that it accumulated in drifts.
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| Hail covering ground near the Pierre airport. Photo Credit: Rae Herron | Drifts of hail In PIerre. Photo Credit: Rae Herron |
Castlewood
80 to 90 mph straight-line winds combined with large amounts of hail (some as large as quarters) to do significant damage in the city of Castlewood and the surrounding areas.
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| Drifts of hail in Castlewood. Photo Credit: Kevin Pribbenow | Wood driven into the ground. Photo Credit: Kevin Pribbenow | Structural damage to a storage unit. Photo Credit: Brittany Davis | Plants destroyed from hail. Photo Credit: Brittany Davis |
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| Nickel size hail in Castlewood. Photo Credit: Brittany Davis | Broken window In Castlewood. Photo Credit: Carson Borer | Tipped irrigation equipment. Photo Credit: Carson Borer | Uprooted tree in Castlewood. Photo Credit: Tayt Alexander |
Toronto/Astoria Area
Strong straight-line winds and hail up to the size of golf balls did damage in and around the Toronto/Astoria area.
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| Drifts of hail 1 mile west of Toronto. Photo Credit: Barry Parkin | Corn damage 1 mile west of Toront. Photo Credit: Barry Parkin |
Radar:
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| Radar reflectivity overview at 3:30 am on June 22nd, 2017 | Radar estimated hail size between 3 and 4 AM on June 22nd, 2017. |
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Radar Reflectivity & Velocity Pierre @ 3:04 AM |
Radar Reflectivity & Velocity Castlewood @ 3:12 AM |
Radar Reflectivity & Velocity Astoria @ 3:42 AM |
Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE ABERDEEN SD
120 PM CDT THU JUN 22 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0500 AM HAIL 1 SSW CHANTLER CREEK RE 44.47N 100.63W
06/22/2017 E1.00 INCH STANLEY SD PUBLIC
STRONG WINDS ESTIMATED AROUND 40 MPH AS
WELL, BUT NO NOTICEABLE DAMAGE.
0348 AM TSTM WND DMG 1 W TORONTO 44.57N 96.66W
06/22/2017 DEUEL SD TRAINED SPOTTER
LAYED-OVER CORN AND HAIL DRIFTS.
0320 AM HAIL CASTLEWOOD 44.73N 97.03W
06/22/2017 E1.00 INCH HAMLIN SD TRAINED SPOTTER
0351 AM HAIL ASTORIA 44.56N 96.55W
06/22/2017 E1.75 INCH DEUEL SD TRAINED SPOTTER
DESTROYED CROPS AND DAMAGED HOMES IN
ASTORIA.
0310 AM TSTM WND DMG 4 W CASTLEWOOD 44.73N 97.11W
06/22/2017 HAMLIN SD EMERGENCY MNGR
MULTIPLE TREES DOWNED BLOCKING INTERSECTION
OF HIGHWAYS 81 AND 22 AT KONES CORNER.
CORRECTION TO PREVIOUS REPORT FOR LOCATION.
0435 AM TSTM WND GST 8 NNE GANN VALLEY 44.14N 98.95W
06/22/2017 E60 MPH BUFFALO SD PUBLIC
ESTIMATED WINDS OF AT LEAST 60 MPH. HAY
BALES BLOWN OVER. TIME BASED ON RADAR.
0340 AM HAIL 7 SE CARPENTER 44.58N 97.80W
06/22/2017 E1.00 INCH CLARK SD PUBLIC
NO DAMAGE NOTICEABLE. TIME BASED ON RADAR.
0519 AM HAIL 2 NNE PIERRE 44.40N 100.31W
06/22/2017 E1.00 INCH HUGHES SD TRAINED SPOTTER
0309 AM TSTM WND DMG 4 ESE THOMAS 44.73N 97.13W
06/22/2017 HAMLIN SD EMERGENCY MNGR
16 TO 20 POWER POLES DOWN. POWER OUTAGES AS
WELL.
0519 AM HAIL FORT PIERRE 44.37N 100.38W
06/22/2017 E0.88 INCH STANLEY SD PUBLIC
0308 AM HAIL 3 NE PIERRE 44.41N 100.28W
06/22/2017 E1.75 INCH HUGHES SD BROADCAST MEDIA
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