Hail in Wyoming, June 18, 2008

Name: Hail in Wyoming, June 18, 2008
Start: 2008-06-18T19:20
End: 2008-06-18T19:20
Location: Wyoming

June 18, 2008 · NWS UNR · 1 event in 1 county or zone

A severe thunderstorm produced large hail near Rochelle in southwestern Weston County.

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

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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 large hail near Rochelle in southwestern Weston County.

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 18, 1:15 PM MST, 6 hours 5 minutes earlier.

Area forecast discussion, Jun 18, 1:15 PM MST, 6 hours 5 minutes before

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
215 PM MDT WED JUN 18 2008

.DISCUSSION...CURRENT SURFACE ANALYSIS PLACES SURFACE LOW ALONG THE
MANITOBA/SASKATCHEWAN BORDER WITH WEAK COLD FRONT STRETCHING THROUGH
WESTERN NORTH DAKOTA...INTO FAR NORTHWEST SOUTH DAKOTA...AND
NORTHERN NEBRASKA. UPPER LEVEL ANALYSIS PLACES LOW AMPLITUDE RIDGE
STRETCHING FROM THE FOUR CORNERS REGION INTO THE SOUTHERN PRAIRIE
PROVIDENCES. A VARIETY OF SHORT WAVES CONTINUE TO SLIDE THROUGH THE
RIDGE AS NOTED ON WATER VAPOR IMAGERY. THUNDERSTORMS HAVE DEVELOPED
ALONG THE AFOREMENTIONED FRONT OVER NORTHWEST SOUTH DAKOTA AS THE
CLOSEST SHORT WAVE STARTS ITS PUSH INTO NWRN SOUTH DAKOTA/BLACK
HILLS AREA.

FOR THE REST OF THE AFTERNOON INTO THIS EVENING...THUNDERSTORMS WILL
CONTINUE TO DEVELOP AS THE AFOREMENTIONED FEATURES CONTINUE THEIR
EASTWARD PUSH. PLENTY OF INSTABILITY EXIST FOR STORMS TO BECOME
SEVERE OVER WESTERN AND SOUTH CENTRAL SOUTH DAKOTA...WITH 1500-2000
J/KG MLCAPE VALUES AND 0-6KM SHEAR OF 40-50KT...PLENTY TO SUPPORT
SUPERCELLS. LARGE HAIL REMAINS THE KEY THREAT...THOUGH SOME DAMAGING
WIND GUSTS REMAIN POSSIBLE. AS FOR A TORNADIC THREAT...LOW LEVEL
SHEAR REMAINS MARGINAL NEAR THE SOUTH DAKOTA/NEBRASKA
BORDER...THOUGH IS SUFFICIENT TO POSSIBLY PRODUCE AN ISOLATED
TORNADO OR TWO OVER THAT AREA. BY LATE TONIGHT...STORM INTENSITY
SHOULD TAME DOWN...THOUGH THERE IS STILL EXPECTED TO BE SOME SHOWERS
AND THUNDERSTORMS LINGERING AFTER MIDNIGHT.

FOR THURSDAY...AXIS OF UPPER RIDGE BACKS TO THE WEST THOUGH THE
VARIETY OF WAVES CONTINUE THEIR PASSAGE THROUGH THE REGION. A WEAK
WAVE WILL MAKE ITS WAY THROUGH INT THE AFTERNOON...BUT WITH LESS
IMPRESSIVE INSTABILITY AND SHEAR OVERALL...EXPECT THUNDERSTORMS TO
BE GENERALLY TAMER THAN TODAY. A FEW SEVERE STORMS MAY BE POSSIBLE
OVER THE SWRN CWFA WHERE THE CAP WILL BE WEAKER AND HIGHER CAPE
VALUES ARE EXPECTED.

FOR FRIDAY...RIDGE AMPLIFIES SLIGHTLY WITH WARMER TEMPERATURES
EXPECTED. THE ROUND OF WAVES TOPPING THE RIDGE CONTINUES WITH THE
CHANCE OF SHOWERS AND THUNDERSTORMS REMAINING IN THE FORECAST.
MODELS PLACES CAPE VALUES OF 1000+ J/KG OVER THE BLACK HILLS
AREA...THOUGH KEEP A RATHER STRONG CAP OVER THE EASTERN CWFA.
THEREFORE...IF ANYTHING WERE TO BECOME SEVERE...EXPECT IT TO REMAIN
OVER THE WESTERN CWFA.

EXTENDED...AN UPPER LEVEL RIDGE WILL DOMINATE THE WX FROM SATURDAY
THRU MONDAY. A SERIES OF S/WS MOVING THRU THIS RIDGE WILL BRING A
DAILY CHC OF AFT AND EVENING SHWS/TSTMS TO THE REGION. THE UPPER
RIDGE WILL BEGIN TO MOVE EAST ON TUESDAY AS THE NEXT UPPER TROF
BEGINS TO EFFECT THE REGION WITH A CONTINUED CHC OF SHWS/TSTMS.
TEMPERATURES ARE EXPECTED TO REMAIN ABOVE NORMAL THRU THE PERIOD.

&&

.AVIATION...VFR CONDITIONS WILL CONTINUE THROUGH THE FORECAST
PERIOD. SCATTERED SHOWERS AND THUNDERSTORMS WILL REDEVELOP THIS
AFTERNOON AND PERSIST THROUGH THE EVENING...WITH SOME STORMS
PRODUCING LARGE HAIL AND GUSTY WINDS.

&&

.UNR WATCHES/WARNINGS/ADVISORIES...
SD...NONE.
WY...NONE.

&&

Hazardous weather outlook, Jun 18, 10:00 AM MST, 9 hours 20 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RAPID CITY SD
1100 AM MDT WED JUN 18 2008

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-191300-
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-
1100 AM MDT (1200 PM CDT) WED JUN 18 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND
NORTHEASTERN WYOMING.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING OVER
WESTERN AND SOUTH CENTRAL SOUTH DAKOTA....ALONG WITH OVER
NORTHEASTERN WYOMING...AS AN UPPER LEVEL DISTURBANCE CROSSES THE
NORTHERN PLAINS. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS
MAY BECOME SEVERE WITH LARGE HAIL AS THE MAIN THREAT...THOUGH
DAMAGING WIND GUSTS WILL ALSO BE POSSIBLE. THERE IS ALSO THE
POSSIBILITY THAT SOME OF THE STRONGER STORMS COULD PRODUCE A
TORNADO. THE AREA WITH THE GREATEST THREAT FOR THIS WILL BE OVER
SOUTHWEST AND SOUTH CENTRAL SOUTH DAKOTA CLOSE TO THE NEBRASKA
BORDER.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

ANOTHER UPPER LEVEL DISTURBANCE WILL CROSS THE AREA ON THURSDAY...
WITH THUNDERSTORMS DEVELOPING IN THE AFTERNOON AND EVENING. THERE IS
A SLIGHT RISK THAT SOME OF THESE THUNDERSTORMS MAY BECOME SEVERE
ACROSS NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA...PARTICULARLY
SOUTH AND WEST OF A LINE FROM BUFFALO TO MARTIN. LARGE HAIL AND
DAMAGING WIND GUSTS WILL BE THE MAIN THREATS. THE THREAT
THUNDERSTORMS WILL CONTINUE INTO FRIDAY...WITH A SLIGHT RISK FOR
SEVERE THUNDERSTORMS OVER OVER WESTERN AND PARTS OF SOUTH CENTRAL
SOUTH DAKOTA...ALONG WITH OVER NORTHEASTERN WYOMING. LARGE HAIL AND
DAMAGING WIND GUSTS WILL CONTINUE TO BE THE MAIN THREATS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY...PARTICULARLY OVER SOUTHWEST
INTO SOUTH CENTRAL SOUTH DAKOTA SOUTH OF INTERSTATE 90.

In the hours before

Local storm report, Jun 18, 2:00 PM MST, 5 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
300 PM MDT WED JUN 18 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0250 PM     HAIL             11 NE RED OWL           44.81N 102.39W
06/18/2008  E1.00 INCH       MEADE              SD   PUBLIC

&&

WETENKAMP

Local storm report, Jun 18, 3:34 PM MST, 3 hours 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
434 PM MDT WED JUN 18 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0432 PM     HAIL             10 NW UNION CENTER      44.67N 102.81W
06/18/2008  E1.00 INCH       MEADE              SD   PUBLIC

&&

WETENKAMP

Local storm report, Jun 18, 4:01 PM MST, 3 hours 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
501 PM MDT WED JUN 18 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0455 PM     HAIL             6 SW RAPID CITY         44.01N 103.30W
06/18/2008  M0.88 INCH       PENNINGTON         SD   TRAINED SPOTTER

&&

WFO UNR

Local storm report, Jun 18, 6:19 PM MST, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
719 PM MDT WED JUN 18 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0645 PM     HAIL             3 W HULETT              44.68N 104.67W
06/18/2008  E1.75 INCH       CROOK              WY   FIRE DEPT/RESCUE

&&

JSCHILD

Local storm report, Jun 18, 6:24 PM MST, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
724 PM MDT WED JUN 18 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0710 PM     HAIL             SSW DEVILS TOWER JUNCTI 44.50N 104.69W
06/18/2008  E1.00 INCH       CROOK              WY   TRAINED SPOTTER

&&

JSCHILD

The radar

The Rapid City radar (KUDX), 177 km away, was scanning. The volume nearest the first event began at 02:17 UTC.

Open the radar archive at this moment

Event by event

1 hail. Local standard time, as filed.

Hail, Weston

When: June 18, 7:20 PM MST
Where: Weston County, 3 mi E of Rochelle
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 43.600, -104.910

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

Every storm in Wyoming in 2008 Every state in 2008 This day in weather history Warnings in Wyoming, June 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: 100493.