Hail, Crook
- When
- June 20, 5:40 PM MST
- Where
- Crook County, 8.87 mi NNE of New Haven
- Measured
- 1.75 in hail
- Reported by
- Public
- Coordinates
- 44.868, -104.760
Hail in Wyoming, June 20, 2010
A severe thunderstorm developed over northwestern Crook County and produced golfball sized hail northwest of Hulett.
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 developed over northwestern Crook County and produced golfball sized hail northwest of Hulett.
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 Jun 20, 11:56 AM MST, 5 hours 44 minutes earlier.
Area forecast discussion, Jun 20, 11:56 AM MST, 5 hours 44 minutes before
AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 1256 PM MDT SUN JUN 20 2010 .DISCUSSION...18Z SURFACE ANALYSIS HAS HIGH PRESSURE OVER THE EASTERN CONUS WITH LOW PRESSURE OVER THE ROCKY MOUNTAIN AREA. LOCALLY...WEAK LOW PRESSURE IS LOCATED ACROSS CENTRAL SOUTH DAKOTA WITH WEAK HIGH PRESSURE OVER SOUTHERN SOUTH DAKOTA INTO NEBRASKA AS A RESULT OF OUTFLOW FROM EARLY MORNING THUNDERSTORMS. TEMPERATURES ARE GENERALLY IN THE 70S TO LOWER 80S AND WINDS ARE LIGHT OUT OF THE SOUTH. LOCAL RADAR SHOWS SOME LIGHT SHOWERS MOVING OFF THE NORTHERN BLACK HILLS TO THE NORTHEAST. UPPER LEVEL ANALYSIS HAS LOW OVER THE PACIFIC NORTHWEST WITH SOUTHWEST FLOW ALOFT. UNSETTLED AND STORMY WEATHER CAN BE EXPECTED OVER THE NEXT COUPLE OF DAYS AS A SERIES OF UPPER LEVEL DISTURBANCES CONTINUE TO ROTATE THROUGH THE AREA. SCATTERED THUNDERSTORMS CAN BE EXPECTED... ESPECIALLY DURING THE AFTERNOON AND INTO THE NIGHTTIME HOURS. SOME OF THE STORMS WILL BE SEVERE WITH LARGE HAIL AND DAMAGING WIND GUSTS. AN ISOLATED TORNADO OR TWO CAN NOT BE RULED OUT AS WELL. TEMPS WILL BE NEAR OR ABOVE AVERAGE THROUGH EARLY NEXT WEEK. SOME SHOWERS AND STORMS HAVE INITIATED ACROSS THE NORTHERN BLACK HILLS THIS MORNING WITH SOME WEAK ENERGY CROSSING THE AREA. NEW STORMS ARE LIKELY TO DEVELOP LATER THIS AFTERNOON AS ATMOSPHERE FURTHER DESTABILIZES AND NEXT DISTURBANCE APPROACHES. HIGHEST CAPE VALUES WILL BE FOUND FROM NORTHEASTERN WY...INTO THE BLACK HILLS...AND ACROSS SOUTH CENTRAL SD BY EARLY EVENING. SHEAR WILL BE MORE THAN ADEQUATE FOR SUPERCELLS. THERE IS A MODERATE RISK FOR SEVERE STORMS ACROSS THE ENTIRE FORECAST AREA...WITH A POSSIBILITY OF A FEW TORNADOES. SEVERE THREAT WILL CONTINUE INTO TONIGHT ACROSS MUCH OF THE CWA...AND POSSIBLY INTO THE OVERNIGHT ACROSS EASTERN AREAS. SIMILAR SETUP EXPECTED FOR MONDAY AS UPPER LOW EJECTS EASTWARD INTO THE NORTHERN ROCKIES. SPC HAS SLIGHT RISK FOR SEVERE STORMS ACROSS THE AREA FOR MONDAY RIGHT NOW. WEAK COLD FRONT AND DRYLINE WILL APPROACH WESTERN AREAS LATE IN THE DAY. FRONT WILL SLOWLY CROSS THE AREA MONDAY NIGHT AS UPPER LOW MOVES INTO CANADA AND WEAKENS. SOME DRIER AIR AND WEAKER ENERGY ALOFT COULD HELP KEEP THUNDERSTORM COVERAGE IN THE ISOLATED CATEGORY FOR TUESDAY. HIGHS FOR MONDAY AND TUESDAY WILL RANGE FROM THE 70S AND 80S ACROSS NORTHERN AND WESTERN AREAS...TO THE 80S TO NEAR 90 IN THE SOUTH AND EAST. EXTENDED...A TRANSIENT UPPER LEVEL RIDGE WILL PROVIDE DRY WEATHER ON WEDNESDAY AND WEDNESDAY NIGHT. SOUTHWESTERLY FLOW ALOFT WILL THEN PERSIST FOR THE REST OF THE WEEK....BRINGING A RETURN TO WARMER TEMPERATURES. WEAK DISTURBANCES CROSSING THE AREA IN THE SOUTHWEST FLOW ALOFT WILL BRING A SLIGHT CHANCE OF MAINLY AFTERNOON AND EVENING THUNDERSTORMS NEARLY EVERY DAY FOR THE SECOND HALF OF THE WEEK. && .AVIATION...SCATTERED TO NUMEROUS THUNDERSTORMS...POSSIBLY SEVERE WITH LARGE HAIL AND DAMAGING WINDS...ARE EXPECTED THIS AFTERNOON AND EVENING. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE AFTER MIDNIGHT. VFR CONDITIONS ARE EXPECTED THROUGH THIS EVENING...THEN MVFR CIGS WILL DEVELOP OVER PARTS OF NORTHEASTERN WYOMING...AND THE NORTHWESTERN AND SOUTH CENTRAL PARTS OF SOUTH DAKOTA AFTER...MIDNIGHT TONIGHT. && .UNR WATCHES/WARNINGS/ADVISORIES... SD...NONE. WY...NONE. &&
Hazardous weather outlook, Jun 20, 9:59 AM MST, 7 hours 41 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RAPID CITY SD 1059 AM MDT SUN JUN 20 2010 SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058- 071-211300- 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- 1059 AM MDT (1159 AM CDT) SUN JUN 20 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND NORTHEASTERN WYOMING. .DAY ONE...TODAY AND TONIGHT SCATTERED TO NUMEROUS THUNDERSTORMS CAN BE EXPECTED...ESPECIALLY FROM THIS AFTERNOON INTO TONIGHT. THERE IS A MODERATE RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON INTO TONIGHT FOR MOST OF NORTHEASTERN WYOMING...WESTERN...AND SOUTH CENTRAL SOUTH DAKOTA. VERY LARGE HAIL AND STRONG WIND GUSTS CAN BE EXPECTED WITH ANY SEVERE STORMS. ISOLATED TORNADOES ARE ALSO A POSSIBILITY... ESPECIALLY TOWARD SOUTH CENTRAL SOUTH DAKOTA. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY DAILY CHANCES FOR THUNDERSTORMS CAN BE EXPECTED THROUGH MUCH OF THE WEEK. THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS ACROSS THE FORECAST AREA MONDAY...MAINLY DURING THE AFTERNOON AND EVENING HOURS. ON TUESDAY...THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS ACROSS FAR SOUTH CENTRAL SOUTH DAKOTA. THE MAIN THREATS FROM ANY SEVERE STORMS WILL BE LARGE HAIL AND STRONG WIND GUSTS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY.
In the hours before
Special weather statement, Jun 20, 3:49 PM MST, 1 hour 51 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 449 PM MDT SUN JUN 20 2010 SDZ042>044-202330- BENNETT SD-JACKSON SD-SHANNON SD- 449 PM MDT SUN JUN 20 2010 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN BENNETT...EASTERN SHANNON AND SOUTHWESTERN JACKSON COUNTIES UNTIL 530 PM MDT... AT 445 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR MANDERSON...OR 12 MILES NORTH OF PINE RIDGE...MOVING NORTHEAST AT 45 MPH. HAIL UP TO THE SIZE OF NICKELS IS EXPECTED WITH THIS STORM...ALONG WITH FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... PORCUPINE... SHARPS CORNER... KYLE... ALLEN... POTATO CREEK... HISLE... THIS STORM MAY INTENSIFY....AND A TORNADO WATCH IS IN EFFECT FOR THIS AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS....FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. SCHILD
Local storm report, Jun 20, 4:08 PM MST, 1 hour 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
508 PM MDT SUN JUN 20 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0500 PM TSTM WND GST 15 NNW RECLUSE 44.94N 105.79W
06/20/2010 E60.00 MPH CAMPBELL WY TRAINED SPOTTER
0505 PM HAIL 5 NNW ROCHELLE 43.66N 105.00W
06/20/2010 E1.00 INCH WESTON WY PUBLIC
LASTED 15 MINUTES
&&
MERICKSOSpecial weather statement, Jun 20, 4:17 PM MST, 1 hour 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RAPID CITY SD 517 PM MDT SUN JUN 20 2010 SDZ002-013-014-210000- NORTHERN MEADE CO PLAINS SD-PERKINS SD-ZIEBACH SD- 517 PM MDT SUN JUN 20 2010 ...SIGNIFICANT WEATHER ADVISORY FOR EXTREME NORTHEASTERN MEADE... CENTRAL ZIEBACH AND SOUTHEASTERN PERKINS COUNTIES UNTIL 600 PM MDT... AT 513 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR FAITH...MOVING EAST AT 35 MPH. HAIL UP TO THE SIZE OF NICKELS IS EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... DUPREE... IRON LIGHTNING... RED ELM... THUNDER BUTTE... SOUTH EAGLE BUTTE... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. SCHILD
Local storm report, Jun 20, 4:26 PM MST, 1 hour 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
526 PM MDT SUN JUN 20 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0520 PM HAIL 14 S ROZET 44.08N 105.20W
06/20/2010 E1.75 INCH CAMPBELL WY PUBLIC
LASTED 15 MINUTES
&&
MERICKSOLocal storm report, Jun 20, 4:35 PM MST, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
535 PM MDT SUN JUN 20 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 PM HAIL 19 ESE HERMOSA 43.73N 102.84W
06/20/2010 E1.00 INCH CUSTER SD TRAINED SPOTTER
LASTED 37 MINUTES
&&
MERICKSOLocal storm report, Jun 20, 5:25 PM MST, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
625 PM MDT SUN JUN 20 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0605 PM HAIL 3 ENE ROCHELLE 43.61N 104.90W
06/20/2010 M1.50 INCH WESTON WY TRAINED SPOTTER
LASTED 10 MINUTES
&&
MERICKSOThe radar
The Rapid City radar (KUDX), 174 km away, was scanning. The volume nearest the first event began at 00:41 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
- Heat in Texas, June 20, 2010
- Tornado and Flash Flooding in Montana, June 20 to 21, 2010
- Lightning Strike in Wyoming, June 20, 2010
- Wildfire in Arizona, June 20 to 30, 2010
- Flash Flooding and Flooding in Nebraska, June 20 to 29, 2010
- Hail and Damaging Winds in Massachusetts, June 20, 2010
- Drought in Louisiana, June 20 to 30, 2010
- Tornado and Hail in Nebraska, June 20, 2010
- Tornado and Hail in South Dakota, June 20, 2010
- Hail and Damaging Winds in Texas, June 20, 2010
- Heat in Kentucky, June 20 to 23, 2010
- Heat in Missouri, June 20 to 23, 2010
More
Every storm in Wyoming in 2010Every state in 2010This day in weather historyWarnings in Wyoming, June 2010
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: 231878.