Overview
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			 A series of strong to severe storms developed and tracked southeast through south central South Dakota on the evening of the Summer Solstice, June 20, 2020. These storms produced repeated rounds of large hail which moved through the Missouri River Valley, with isolated damaging wind gusts as well.  | 
			![]() Supercell in South Central South Dakota (Photo by Jon Sperl)  | 
		
Hail:
Multiple storms tracked through the Missouri River Valley, producing swaths of 1 to 2 inch hail.
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| Chamberlain, SD Hail (photo by Libby Renbarger)  | 
			Hail at Happy Camper Campground in Chamberlain, SD (photo by Pamela Boheman)  | 
			Map of Large Hail Tracks through the Missouri River Valley | Supercell north of Lake Andes, SD (photo by Douglas County Emergency Management)  | 
		
Radar
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| Radar Loop from 4pm to 10 pm | Map of Severe Thunderstorm Warnings issued on June 20, 2020 | 
Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1007 PM CDT SAT JUN 20 2020
..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..
0945 PM     HAIL             8 E FAIRFAX             43.01N 98.74W
06/20/2020  E1.00 INCH       GREGORY            SD   PUBLIC           
            HAIL COVERED THE GROUND. 
0918 PM     HAIL             6 SW PICKSTOWN          43.01N 98.62W
06/20/2020  E1.75 INCH       GREGORY            SD   PUBLIC           
0839 PM     HAIL             5 ENE BONESTEEL         43.10N 98.86W
06/20/2020  E1.00 INCH       GREGORY            SD   PUBLIC           
0739 PM     HAIL             9 E DIXON               43.38N 99.29W
06/20/2020  E1.75 INCH       GREGORY            SD   PUBLIC           
            DAMAGE TO CARS BY HAIL. 
0737 PM     HAIL             14 NNE BURKE            43.36N 99.18W
06/20/2020  E2.00 INCH       GREGORY            SD   PUBLIC           
            GOLF BALL TO 2 HAIL FALLING. 
0854 PM     HAIL             10 SW PLATTE            43.30N 99.00W
06/20/2020  E1.00 INCH       CHARLES MIX        SD   PUBLIC           
            REPORT VIA SOCIAL MEDIA. 
0830 PM     HAIL             10 W PLATTE             43.38N 99.04W
06/20/2020  E1.00 INCH       CHARLES MIX        SD   PUBLIC           
            REPORT VIA SOCIAL MEDIA. 
0830 PM     TSTM WND GST     10 W PLATTE             43.38N 99.04W
06/20/2020  M65 MPH          CHARLES MIX        SD   PUBLIC           
0825 PM     HAIL             7 E PLATTE              43.40N 98.71W
06/20/2020  E1.50 INCH       CHARLES MIX        SD   TRAINED SPOTTER  
            HAIL PEA TO PING PONG BALL SIZE COVERING THE 
            GROUND. 
0811 PM     HAIL             10 SW PLATTE            43.30N 99.00W
06/20/2020  E1.00 INCH       CHARLES MIX        SD   PUBLIC           
            REPORT VIA TWITTER. 
0748 PM     HAIL             10 SW PLATTE            43.29N 98.99W
06/20/2020  U1.00 INCH       CHARLES MIX        SD   PUBLIC           
            REPORT FROM MPING: QUARTER (1.00 IN.). 
0803 PM     HAIL             10 N PLATTE             43.53N 98.85W
06/20/2020  E1.00 INCH       BRULE              SD   PUBLIC           
            DAMAGE TO CORN IN FIELDS. 
0753 PM     HAIL             13 S KIMBALL            43.56N 98.98W
06/20/2020  E1.00 INCH       BRULE              SD   PUBLIC           
            PEA TO QUARTER SIZE HAIL. 
0704 PM     HAIL             13 S KIMBALL            43.56N 98.98W
06/20/2020  E1.50 INCH       BRULE              SD   PUBLIC           
0632 PM     HAIL             10 N PUKWANA            43.92N 99.15W
06/20/2020  E1.75 INCH       BRULE              SD   PUBLIC           
            CARS DAMAGED BY FALLING HAIL. 
0620 PM     HAIL             3 SE CHAMBERLAIN        43.77N 99.28W
06/20/2020  E1.75 INCH       BRULE              SD   PUBLIC           
0618 PM     HAIL             3 S CHAMBERLAIN         43.77N 99.31W
06/20/2020  E1.75 INCH       BRULE              SD   PUBLIC           
0612 PM     HAIL             2 SSW CHAMBERLAIN       43.77N 99.34W
06/20/2020  E1.75 INCH       BRULE              SD   TRAINED SPOTTER  
            GROUND COVERED WITH 1.5 TO 1.75 INCH HAIL. 
0558 PM     HAIL             CHAMBERLAIN             43.81N 99.33W
06/20/2020  E1.50 INCH       BRULE              SD   BROADCAST MEDIA  
            REPORT RECEIVED VIA TWITTER. 
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