Hail, Pennington
- When
- July 1, 6:40 PM MST
- Where
- Pennington County, 4 mi SE of Keystone
- Measured
- 1 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 43.867, -103.367
A severe thunderstorm developed near Keystone and moved northeastward across central and eastern parts of Pennington County. Hail to the size of quarters was reported from Keystone to Rapid City, with a report of ping pong ball sized hail in southeast Rapid City.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS UNR wrote it up.
A severe thunderstorm developed near Keystone and moved northeastward across central and eastern parts of Pennington County. Hail to the size of quarters was reported from Keystone to Rapid City, with a report of ping pong ball sized hail in southeast Rapid City. As the storm moved into eastern parts of Pennington County, dime sized hail was reported near New Underwood, Caputa, and Creighton.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Rapid City, SD wrote its last area forecast discussion before the first event at Jul 1, 1:00 PM MST, 5 hours 40 minutes earlier.
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</html>SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-021300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 709 AM MDT TUE JUL 1 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER MUCH OF WESTERN AND CENTRAL SOUTH DAKOTA THIS AFTERNOON AND EVENING. THE MAIN THREAT FROM THE SEVERE THUNDERSTORMS WILL BE HAIL LARGER THAN 3/4 INCH AND WIND GUSTS GREATER THAN 60 MPH. A SURFACE TROUGH AND A WEAK UPPER LEVEL DISTURBANCE WILL MOVE ACROSS NORTHEAST WYOMING AND WESTERN SOUTH DAKOTA LATER TODAY. AS TEMPERATURES RISE WELL INTO THE 90S LATER THIS AFTERNOON...THE ATMOSPHERE WILL BECOME VERY UNSTABLE. THIS COMBINATION IS EXPECTED TO RESULT IN SOME THUNDERSTORM DEVELOPMENT LATE THIS AFTERNOON AND EVENING. VERY WARM AIR ALOFT SHOULD HELP KEEP THUNDERSTORM DEVELOPMENT MORE ISOLATED. HOWEVER...STORMS THAT DO DEVELOP COULD QUICKLY BECOME SEVERE LATE THIS AFTERNOON AND EVENING...ESPECIALLY ACROSS WESTERN AND CENTRAL SOUTH DAKOTA. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY DAILY CHANCES FOR THUNDERSTORMS ARE EXPECTED OVER PARTS OF NORTHEAST WYOMING AND WESTERN SOUTH DAKOTA FROM FRIDAY THROUGH MONDAY...WITH THE MORE WIDESPREAD ACTIVITY EXPECTED TO BE ON FRIDAY AND SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY.
The national radar mosaic for the moment the first event began.
8 hail. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2003Every state in 2003This day in weather historyWarnings in South Dakota, July 2003
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 5372580, 5372581, 5372582, 5372583, 5372579, 5372584, 5372643, 5372644.