July 20, 2013 - Severe thunderstorms pummeled western South Dakota during the afternoon and early evening hours. Some strong wind gusts were recorded, but many reports of large hail were received. Downtown Rapid City was particularly hard hit.

Severe Thunderstorm Reports from July 20, 2013 

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..
0100 PM     HAIL             HILL CITY               43.93N 103.57W
07/20/2013  M0.50 INCH       PENNINGTON         SD   PUBLIC
0134 PM     HAIL             HILL CITY               43.93N 103.57W
07/20/2013  M1.00 INCH       PENNINGTON         SD   PUBLIC
0137 PM     HAIL             10 E DOWNTOWN CUSTER    43.77N 103.40W
07/20/2013  M0.50 INCH       CUSTER             SD   TRAINED SPOTTER
0211 PM     HAIL             7 SW DOWNTOWN RAPID CIT 44.01N 103.33W
07/20/2013  M1.00 INCH       PENNINGTON         SD   NWS EMPLOYEE
0230 PM     HAIL             8 W FAIRBURN            43.67N 103.37W
07/20/2013  M1.00 INCH       CUSTER             SD   TRAINED SPOTTER
0230 PM     HAIL             13 SE DOWNTOWN CUSTER   43.63N 103.42W
07/20/2013  M1.00 INCH       CUSTER             SD   TRAINED SPOTTER
0300 PM     HAIL             7 E BUFFALO GAP         43.49N 103.17W
07/20/2013  M0.75 INCH       CUSTER             SD   PUBLIC
0320 PM     HAIL             1 N HISEGA              44.07N 103.40W
07/20/2013  M1.00 INCH       PENNINGTON         SD   TRAINED SPOTTER
0326 PM     HAIL             3 WSW DOWNTOWN RAPID CI 44.06N 103.28W
07/20/2013  E1.00 INCH       PENNINGTON         SD   CO-OP OBSERVER
0330 PM     HAIL             2 SW DOWNTOWN RAPID CIT 44.06N 103.25W
07/20/2013  E0.75 INCH       PENNINGTON         SD   NWS EMPLOYEE
0331 PM     HAIL             HISEGA                  44.05N 103.40W
07/20/2013  M1.75 INCH       PENNINGTON         SD   AMATEUR RADIO
0334 PM     HAIL             3 WSW DOWNTOWN RAPID CI 44.07N 103.28W
07/20/2013  M0.75 INCH       PENNINGTON         SD   TRAINED SPOTTER
0336 PM     HAIL             4 WSW DOWNTOWN RAPID CI 44.06N 103.30W
07/20/2013  E0.75 INCH       PENNINGTON         SD   PUBLIC
0337 PM     HAIL             2 SW DOWNTOWN RAPID CIT 44.06N 103.25W
07/20/2013  E0.75 INCH       PENNINGTON         SD   NWS EMPLOYEE
0343 PM     HAIL             1 E DOWNTOWN RAPID CITY 44.07N 103.21W
07/20/2013  M1.00 INCH       PENNINGTON         SD   NWS OFFICE
0343 PM     HAIL             2 SW DOWNTOWN RAPID CIT 44.06N 103.25W
07/20/2013  E1.25 INCH       PENNINGTON         SD   NWS EMPLOYEE
0344 PM     HAIL             4 WSW DOWNTOWN RAPID CI 44.06N 103.30W
07/20/2013  E1.00 INCH       PENNINGTON         SD   PUBLIC
0345 PM     HAIL             2 NW DOWNTOWN RAPID CIT 44.10N 103.25W
07/20/2013  M2.00 INCH       PENNINGTON         SD   BROADCAST MEDIA
0345 PM     HAIL             2 W DOWNTOWN RAPID CITY 44.08N 103.27W
07/20/2013  E1.50 INCH       PENNINGTON         SD   PUBLIC
0345 PM     HAIL             2 N DOWNTOWN RAPID CITY 44.11N 103.23W
07/20/2013  E2.00 INCH       PENNINGTON         SD   TRAINED SPOTTER
0347 PM     HAIL             2 SW DOWNTOWN RAPID CIT 44.06N 103.25W
07/20/2013  E1.50 INCH       PENNINGTON         SD   NWS EMPLOYEE
0351 PM     HAIL             1 E DOWNTOWN RAPID CITY 44.07N 103.21W
07/20/2013  M1.75 INCH       PENNINGTON         SD   NWS OFFICE
0400 PM     HAIL             BOX ELDER               44.12N 103.07W
07/20/2013  E1.00 INCH       PENNINGTON         SD   TRAINED SPOTTER
0405 PM     HAIL             OGLALA                  43.18N 102.73W
07/20/2013  E0.88 INCH       SHANNON            SD   TRAINED SPOTTER
0405 PM     TSTM WND GST     16 SW REVA              45.38N 103.32W
07/20/2013  E60.00 MPH       HARDING            SD   TRAINED SPOTTER
0410 PM     HAIL             4 NE DOWNTOWN CUSTER    43.81N 103.54W
07/20/2013  E1.00 INCH       CUSTER             SD   PUBLIC
0415 PM     HAIL             15 SSW REVA             45.35N 103.20W
07/20/2013  E1.25 INCH       HARDING            SD   PUBLIC
0420 PM     HAIL             7 NNE HOOVER            45.20N 103.21W
07/20/2013  E1.00 INCH       BUTTE              SD   PUBLIC
0440 PM     HAIL             6 SW HERMOSA            43.78N 103.28W
07/20/2013  E0.70 INCH       CUSTER             SD   TRAINED SPOTTER
0450 PM     HAIL             3 SSE SORUM             45.41N 102.92W
07/20/2013  E0.50 INCH       PERKINS            SD   TRAINED SPOTTER
0450 PM     HAIL             7 S HARDING             45.29N 103.83W
07/20/2013  M1.00 INCH       HARDING            SD   PUBLIC
0500 PM     HAIL             1 S DOWNTOWN BELLE FOUR 44.66N 103.85W
07/20/2013  E1.00 INCH       BUTTE              SD   PUBLIC
0515 PM     HAIL             7 S ENNING              44.47N 102.56W
07/20/2013  E0.88 INCH       MEADE              SD   TRAINED SPOTTER
0530 PM     HAIL             5 SE ENNING             44.53N 102.49W
07/20/2013  E1.00 INCH       MEADE              SD   PUBLIC
0530 PM     TSTM WND GST     1 SE ENNING             44.57N 102.55W
07/20/2013  E60.00 MPH       MEADE              SD   PUBLIC
0535 PM     HAIL             7 SE PRAIRIE CITY       45.46N 102.70W
07/20/2013  E1.75 INCH       PERKINS            SD   PUBLIC
0538 PM     HAIL             18 NW UNION CENTER      44.75N 102.93W
07/20/2013  M2.00 INCH       MEADE              SD   PUBLIC
0605 PM     HAIL             1 S UNION CENTER        44.55N 102.67W
07/20/2013  E0.75 INCH       MEADE              SD   TRAINED SPOTTER
0610 PM     HAIL             UNION CENTER            44.56N 102.67W
07/20/2013  E1.75 INCH       MEADE              SD   PUBLIC
0610 PM     TSTM WND GST     UNION CENTER            44.56N 102.67W
07/20/2013  M57.00 MPH       MEADE              SD   MESONET
0615 PM     HAIL             12 N WALL               44.17N 102.24W
07/20/2013  M1.00 INCH       PENNINGTON         SD   TRAINED SPOTTER
0615 PM     TSTM WND GST     8 SSW UNION CENTER      44.45N 102.70W
07/20/2013  E60.00 MPH       MEADE              SD   TRAINED SPOTTER
0655 PM     HAIL             5 ESE ELM SPRINGS       44.29N 102.43W
07/20/2013  E1.00 INCH       MEADE              SD   TRAINED SPOTTER
0715 PM     HAIL             1 N CASTLE ROCK         44.98N 103.42W
07/20/2013  E1.00 INCH       BUTTE              SD   PUBLIC
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   18 NW UNION CENTER       SD  MEADE            0538 PM
  2.00   2 N DOWNTOWN RAPID CITY  SD  PENNINGTON       0345 PM
                 CRACKED WINDOW AT RESIDENCE.
  2.00   2 NW DOWNTOWN RAPID CIT  SD  PENNINGTON       0345 PM
  1.75   UNION CENTER             SD  MEADE            0610 PM
  1.75   7 SE PRAIRIE CITY        SD  PERKINS          0535 PM
  1.75   1 E DOWNTOWN RAPID CITY  SD  PENNINGTON       0351 PM
  1.75   HISEGA                   SD  PENNINGTON       0331 PM
  1.50   2 SW DOWNTOWN RAPID CIT  SD  PENNINGTON       0347 PM
  1.50   2 W DOWNTOWN RAPID CITY  SD  PENNINGTON       0345 PM
  1.25   15 SSW REVA              SD  HARDING          0415 PM
  1.25   2 SW DOWNTOWN RAPID CIT  SD  PENNINGTON       0343 PM
  1.00   1 N CASTLE ROCK          SD  BUTTE            0715 PM
  1.00   5 ESE ELM SPRINGS        SD  MEADE            0655 PM
  1.00   12 N WALL                SD  PENNINGTON       0615 PM
  1.00   5 SE ENNING              SD  MEADE            0530 PM
  1.00   1 S DOWNTOWN BELLE FOUR  SD  BUTTE            0500 PM
  1.00   7 S HARDING              SD  HARDING          0450 PM
  1.00   7 NNE HOOVER             SD  BUTTE            0420 PM
  1.00   4 NE DOWNTOWN CUSTER     SD  CUSTER           0410 PM
  1.00   BOX ELDER                SD  PENNINGTON       0400 PM
  1.00   4 WSW DOWNTOWN RAPID CI  SD  PENNINGTON       0344 PM
  1.00   1 E DOWNTOWN RAPID CITY  SD  PENNINGTON       0343 PM
  1.00   3 WSW DOWNTOWN RAPID CI  SD  PENNINGTON       0326 PM
  1.00   1 N HISEGA               SD  PENNINGTON       0320 PM
  1.00   13 SE DOWNTOWN CUSTER    SD  CUSTER           0230 PM
  1.00   8 W FAIRBURN             SD  CUSTER           0230 PM
  1.00   7 SW DOWNTOWN RAPID CIT  SD  PENNINGTON       0211 PM
  1.00   HILL CITY                SD  PENNINGTON       0134 PM
  0.88   7 S ENNING               SD  MEADE            0515 PM
  0.88   OGLALA                   SD  SHANNON          0405 PM
  0.75   1 S UNION CENTER         SD  MEADE            0605 PM
  0.75   2 SW DOWNTOWN RAPID CIT  SD  PENNINGTON       0337 PM
  0.75   4 WSW DOWNTOWN RAPID CI  SD  PENNINGTON       0336 PM
  0.75   3 WSW DOWNTOWN RAPID CI  SD  PENNINGTON       0334 PM
  0.75   2 SW DOWNTOWN RAPID CIT  SD  PENNINGTON       0330 PM
  0.75   7 E BUFFALO GAP          SD  CUSTER           0300 PM
  0.70   6 SW HERMOSA             SD  CUSTER           0440 PM
  0.50   3 SSE SORUM              SD  PERKINS          0450 PM
  0.50   10 E DOWNTOWN CUSTER     SD  CUSTER           0137 PM
  0.50   HILL CITY                SD  PENNINGTON       0100 PM
TSTM WIND REPORTS LISTED BY SPEED (MPH)
 SPEED   LOCATION                 ST  COUNTY           TIME
 ------  -----------------------  --  --------------   -------
 60.00   8 SSW UNION CENTER       SD  MEADE            0615 PM
 60.00   1 SE ENNING              SD  MEADE            0530 PM
 60.00   16 SW REVA               SD  HARDING          0405 PM
 57.00   UNION CENTER             SD  MEADE            0610 PM

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