Hail, Custer
- When
- July 23, 1:25 PM MST
- Where
- Custer County, 7 mi W of Hermosa
- Measured
- 1 in hail
- Reported by
- Public
- Coordinates
- 43.830, -103.320
Hail in South Dakota, July 23, 2008
A severe thunderstorm produced quarter sized hail west of Hermosa.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
What happened
The episode as NWS UNR wrote it up.
A severe thunderstorm produced quarter sized hail west of Hermosa.
What forecasters said that day
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 23, 1:00 PM MST, 25 minutes earlier.
Area forecast discussion, Jul 23, 1:00 PM MST, 25 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 200 PM MDT WED JUL 23 2008 .DISCUSSION...CURRENT SURFACE ANALYSIS PLACES LOW PRESSURE OVER EASTERN INTO CENTRAL SASKATCHEWAN...WHILE TROF DIPS DOWN INTO THE FAR WESTERN DAKOTAS. SOUTH/SOUTHEASTERLY WINDS OF 10 TO 20 MPH CONTINUE AHEAD OF THE TROF...WITH DEWPOINTS PUSHING INTO THE UPPER 60S TO LOWER 70S. UPPER LEVEL ANALYSIS PLACES WEST TO SOUTHWESTERLY FLOW ALOFT OVER THE AREA. INITIAL SHORT WAVE NOW PUSHING INTO WESTERN SOUTH DAKOTA...WHILE SECONDARY WAVE REMAINS OVER CENTRAL WYOMING. CONVECTION CONTINUES TO FIRE OVER THE BLACK HILLS. FOR THE REMAINDER OF TODAY INTO TONIGHT...CONVECTION WILL CONTINUE TO DEVELOP AS AFOREMENTIONED WAVES PUSH THROUGH THE AREA. 18Z KUNR SOUNDING INDICATES STRONG INSTABILITY WITH NOT MUCH OF A CAP IN PLACE. MODELS FORECAST THE HIGHER INSTABILITY (1500+ J/KG) TO BE OVER SOUTHWEST INTO WEST CENTRAL SOUTH DAKOTA EARLY THIS AFTERNOON...AND SPREADING EASTWARD TOWARDS EVENING. 0-6KM BULK SHEAR REMAINS SUFFICIENT INTO THIS EVENING TO SUPPORT ROTATING STORMS. EXPECT LARGE HAIL TO BE THE MAIN THREAT...WITH A FEW STRONG WIND GUSTS. AS FOR THE TORNADIC THREAT...LOW LEVEL SHEAR REMAINS THE HIGHEST OVER SOUTH CENTRAL SOUTH DAKOTA...THOUGH IS MARGINAL AT BEST. THEREFORE...AN ISOLATED TORNADO WILL BE POSSIBLE BUT WIDESPREAD ACTIVITY IS NOT EXPECTED. EXPECT CONVECTION TO CONTINUE INTO LATER THIS EVENING...PARTICULARLY OVER SOUTH CENTRAL SOUTH DAKOTA WHERE LOW LEVEL JET WILL DEVELOP AND STRONGEST INSTABILITY IS FORECAST. AS FOR THE FLASH FLOOD POTENTIAL...THE PRECIPITABLE WATER VALUES REMAIN RATHER HIGH FOR THIS TIME OF YEAR...THOUGH MODELS DO NOT FAVOR STATIONARY STORMS. WITH THIS SAID...AN ISOLATED EVENT MAY BE POSSIBLE BUT DO NOT THINK A WATCH IS WARRANTED AT THIS TIME. FOR THURSDAY...FLOW WILL REMAIN GENERALLY WESTERLY AS AN UPPER RIDGE TRIES TO DEVELOP OVER THE FOUR CORNERS AREA. A VARIETY OF SHORT WAVES WILL MAKE THEIR WAY THROUGH THE REGION WITH ANOTHER ROUND OF THUNDERSTORMS EXPECTED. WITH GOOD INSTABILITY IN PLACE ALONG WITH STRONG 0-6KM BULK SHEAR (40-50+ KTS)...ANOTHER ROUND OF SEVERE WEATHER IS EXPECTED. ON FRIDAY...UPPER RIDGE BUILDS TO THE WEST WITH FLOW STARTING TO SHIFT TO THE WEST-NORTHWEST. UPPER WAVES CONTINUE TO SLIDE THROUGH THE FLOW BRINGING THE CONTINUED CHANCE FOR THUNDERSTORMS. EXTENDED...AN UPPER LEVEL RIDGE WILL REMAIN OVER THE PLAINS THIS WEEKEND AND INTO NEXT WEEK. THIS RIDGE WILL CONTINUE TO BRING SLIGHTLY ABOVE AVERAGE TEMPS TO THE AREA. A SERIES OF DISTURBANCES WILL PASS OVER THE RIDGE AND COULD BRING A FEW THUNDERSTORMS TO THE AREA EACH DAY...MAINLY DURING THE AFTERNOON AND EVENING HOURS. && .AVIATION...THUNDERSTORMS WILL CONTINUE TO DEVELOP THIS AFTERNOON AND INTO THE EVENING...WITH SOME POSSIBLY BECOMING SEVERE. MVFR CONDITIONS ARE POSSIBLE NEAR ANY THUNDERSTORMS. && .UNR WATCHES/WARNINGS/ADVISORIES... SD...NONE. WY...NONE. &&
Hazardous weather outlook, Jul 23, 3:44 AM MST, 9 hours 41 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 444 AM MDT WED JUL 23 2008 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-241300- BENNETT-BUTTE-CENTRAL BLACK HILLS-CUSTER CO PLAINS-FALL RIVER-HAAKON- HARDING-HERMOSA FOOT HILLS-JACKSON-MELLETTE-NORTHEASTERN CROOK- NORTHERN BLACK HILLS-NORTHERN CAMPBELL-NORTHERN FOOT HILLS- NORTHERN MEADE CO PLAINS-PENNINGTON CO PLAINS-PERKINS-RAPID CITY- SHANNON-SOUTHERN BLACK HILLS-SOUTHERN CAMPBELL-SOUTHERN FOOT HILLS- SOUTHERN MEADE CO PLAINS-STURGIS/PIEDMONT FOOT HILLS-TODD-TRIPP- WESTERN CROOK-WESTON-WYOMING BLACK HILLS-ZIEBACH- 444 AM MDT (544 AM CDT) WED JUL 23 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED AGAIN TODAY. SOME OF THESE THUNDERSTORMS MAY BECOME SEVERE THIS AFTERNOON AND EVENING CONTAINING LARGE HAIL...GUSTY WINDS...AND HEAVY RAINFALL. THE BEST CHANCE FOR SEVERE STORMS WILL BE FOUND ACROSS SOUTH CENTRAL SOUTH DAKOTA WHERE ISOLATED TORNADOES ARE ALSO POSSIBLE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SCATTERED THUNDERSTORMS ARE EXPECTED AGAIN ON THURSDAY...MAINLY DURING THE AFTERNOON AND EVENING HOURS. SOME OF THESE STORMS MAY BECOME SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BECOME NECESSARY TODAY...ESPECIALLY ACROSS SOUTH CENTRAL SOUTH DAKOTA.
In the hours before
Local storm report, Jul 23, 11:27 AM MST, 1 hour 58 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
1227 PM MDT WED JUL 23 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0600 PM HAIL 21 N WESTON 44.94N 105.33W
07/22/2008 E1.75 INCH CAMPBELL WY PUBLIC
NICKEL TO GOLF BALL SIZE HAIL REPORTED. HAIL LASTED FROM
600 PM MDT TO 700 PM MDT. TIME ESTIMATED. MEASURED 1.25
INCHES OF RAIN.
&&
WETENKAMPLocal storm report, Jul 23, 11:50 AM MST, 1 hour 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
1250 PM MDT WED JUL 23 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0430 PM HAIL 3 W PROVO 43.19N 103.89W
07/22/2008 E1.00 INCH FALL RIVER SD TRAINED SPOTTER
&&
WETENKAMPLocal storm report, Jul 23, 12:16 PM MST, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
116 PM MDT WED JUL 23 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0112 PM HAIL MOUNT RUSHMORE 43.88N 103.45W
07/23/2008 E0.88 INCH PENNINGTON SD TRAINED SPOTTER
&&
WETENKAMPLocal storm report, Jul 23, 12:44 PM MST, 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
144 PM MDT WED JUL 23 2008
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0142 PM HAIL 4 N HAYWARD 43.93N 103.33W
07/23/2008 E0.88 INCH PENNINGTON SD PUBLIC
&&
WETENKAMPThe radar
The Rapid City radar (KUDX), 51 km away, was scanning. The volume nearest the first event began at 20:25 UTC.
Event by event
1 hail. Local standard time, as filed.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Excessive Heat in Texas, July 23 to 28, 2008
- Hurricane and Tornado in Texas, July 23 to 28, 2008
- Flash Flooding and Hail in New York, July 23 to 24, 2008
- Rip Current in Florida, July 23, 2008
- Tornadoes and Tropical Storm in Texas, July 23 to 24, 2008
- Flash Flooding and Flooding in New York, July 23 to 24, 2008
- Hail and Damaging Winds in New Jersey, July 23, 2008
- Tornado and Flash Flooding in Massachusetts, July 23, 2008
- Hail and Damaging Winds in Pennsylvania, July 23, 2008
- Tornado and Flash Flooding in Rhode Island, July 23, 2008
- Lightning Strike in Delaware, July 23, 2008
- Tornadoes and Hail in Virginia, July 23, 2008
More
Every storm in South Dakota in 2008Every state in 2008This day in weather historyWarnings in South Dakota, July 2008
Sources
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 2026-09-24. Each event’s entry at NCEI: 122582.