A strong thunderstorm produced large hail in northeast Utah.
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 GJT wrote it up.
A strong thunderstorm produced large hail in northeast Utah.
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 Grand Junction, CO wrote its last area forecast discussion before the first event at Jun 15, 2:15 PM MST, 1 hour 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 315 PM MDT MON JUN 15 2015 .SHORT TERM...(TONIGHT THROUGH TUESDAY NIGHT) ISSUED AT 313 PM MDT MON JUN 15 2015 THUNDERSTORM COVERAGE A BIT GREATER THAN YESTERDAY AT THIS TIME LARGELY DUE TO A SLIGHT UPTICK IN MOISTURE OVER THE PAST 24 HOURS. STORMS WERE TRACKING TO THE WEST AT AROUND 15 MPH. STRONGER CELLS OVER MUCH OF THE AREA MAY BE CAPABLE OF PRODUCING HAIL TO 0.5 INCHES WITH GUSTY OUTFLOW WINDS TO 40 MPH. A SHORTWAVE BRUSHING THE NORTH WILL LIKELY ENHANCE STORMS LATE THIS AFTERNOON AND INTO THE EVENING. DRYNESS IN LOWER LEVELS OF THE ATMOSPHERE COMBINED WITH MIDDLING ENERGY COULD GENERATE STRONGER WIND GUSTS ACROSS THE NORTHERN BORDER AREAS OF THE FORECAST...POSSIBLY PEAKING IN THE LOW TO MID 50S. THIS WAVE WILL HELP SUSTAIN MOIST CONVECTIVE ACTIVITY WELL INTO THE EVENING BEFORE SHOWERS AND EMBEDDED THUNDERSTORMS DIMINISH LATER TONIGHT. OVERNIGHT LOWS WILL CONTINUE TO HOVER NEAR NORMAL...BUT JUST A BIT BELOW GUIDANCE. WE ARE GOING TO SEE A MUCH DRIER ATMOSPHERE BEGIN TO EXPAND OUT OF THE SOUTHWEST STATES INTO THE EASTERN GREAT BASIN OVER THE NEXT 24 TO 36 HOURS. PWAT ANOMALY TABLES ARE FINALLY SHOWING A DOWNWARD TREND TO MORE SEASONAL READING NEAR A THIRD OF AN INCH OVER EASTERN UTAH AND WESTERN COLORADO BY THURSDAY AND WELL BEYOND. THERE WILL BE A SUBTLE WAVE DROPPING ACROSS INTO OUR CENTRAL CWA TUESDAY MORNING...FOLLOWED BY A SECOND WAVE SWINGING ACROSS THE NORTH IN THE AFTERNOON...THEN LASTLY A WAVE DRIFTING ACROSS THE 4 CORNERS DURING THE LATE EVENING TO EARLY MORNING HOURS. THE LARGE SCALE ASCENT ASSOCIATED WITH THESE PASSING WAVES REMAINS WEAK TO MODERATE AS THE ATMOSPHERE DRIES OUT TOMORROW. REALLY EXPECT THE CONVECTION TO REMAIN FOCUSED ON THE TERRAIN TOMORROW AND TOMORROW NIGHT WITH THE EXCEPTION OF LINGERING SHOWERS ACROSS THE NORTHERN VALLEYS WITH THE INITIAL WAVE IN THE AM HOURS TUESDAY. GUSTY WINDS WILL BE THE MAIN THREAT DUE TO FAVORABLE ATMOSPHERIC PROFILES. TEMPERATURES WILL BE PUSHING NEAR MID JUNE NORMALS ACROSS THE REGION...TEMPERED ONLY BY REMAINING SNOW PACK AND AREAS STILL SATURATED FROM THE RECENT HEAVY RAINFALL. .LONG TERM...(WEDNESDAY THROUGH MONDAY) ISSUED AT 313 PM MDT MON JUN 15 2015 RIDGING ACROSS THE SOUTHWEST CONUS WILL BE DOMINATING THE WEATHER PATTERN ACROSS OUR REGION THROUGH THE REMAINDER OF THE FORECAST PERIOD. WE WILL REMAIN MAINLY IN A ZONAL PATTERN ON THE FRINGE OF THE HIGH CENTERED NEAR THE SOUTHERN CALIFORNIA COAST. AS THE DRY PERIOD EXTENDS IN TIME SOILS AND VEGETATION WILL BE DRYING AND THIS WILL HELP TEMPERATURES INCREASE THROUGH THE PERIOD. A SYSTEM MOVING ACROSS THE NORTHERN ROCKIES AND PLAINS WILL SATURDAY WILL BRIEFLY SUPPRESS THE HIGH SOUTHWARD BUT THE IMPACT ON TEMPERATURES WILL BE MINIMAL. AS THE RIDGE REBOUNDS ON SUNDAY BEHIND THE SYSTEM...MID LEVEL THERMAL RIDGING IS AT A PEAK ACROSS THE LOWER DESERTS AND HIGHS IN THE TRIPLE DIGITS MAY EXPAND OUT OF THE 4 CORNERS REGION. && .AVIATION...(FOR THE 12Z TAFS THROUGH 12Z TUESDAY MORNING) ISSUED AT 538 AM MDT MON JUN 15 2015 QUIET WEATHER UNTIL 18Z...AN EMBEDDED DISTURBANCE IN THE WESTERLIES MOVES ACROSS NRN UTAH INTO SW WYOMING. SOME UPWARDS FORCING EXTENDS INTO WRN COLORADO AND PULSE TYPE THUNDERSTORM CELLS MAY BE LONGER LIVED THAN NORMAL. MANY TAF SITES WILL HAVE THUNDERSTORMS IN THE VICINITY...BUT THERE IS A 20-40 PERCENT CHANCE THAT 1-2 STORMS MAY PASS OVER THE TAF SITE WITH CIGS BELOW ILS BREAKPOINTS. SCATTERED -TSRA/-SHRA SHOULD BE DECREASING AFTER 03Z TUESDAY. HOWEVER ISOLATED STORMS NEAR THE WYOMING BORDER MAY PERSIST THROUGH 12Z TUESDAY. && .HYDROLOGY... ISSUED AT 313 PM MDT MON JUN 15 2015 CONDITIONS CONTINUED TO GRADUALLY IMPROVE OVER THE PAST FEW DAYS ALONG RIVERS AND STREAMS ACROSS THE FORECAST AREA. DECREASED RAINFALL HAS ALLOWED OPERATORS TO REDUCE RELEASES FROM VALLECITO RESERVOIR AND THE AREAL FLOOD ADVISORY THERE HAS BEEN CANCELLED. THAT SAID...THE LOS PINOS RIVER WILL CONTINUE TO RUN HIGH AND FAST. MEANWHILE...BOTH THE ROARING FORK RIVER NEAR ASPEN AND THE EAGLE RIVER NEAR REDCLIFF CONTINUED TO RUN NEAR...OR A LITTLE ABOVE BANKFULL. LATEST FORECASTS FROM CBRFC INDICATED THESE LOCATIONS WILL CONTINUE TO SEE HIGH FLOWS THROUGH MUCH OF THE REMAINDER OF THE WEEK. MOST MOUNTAINS HAVE SEEN THEIR PEAK IN SNOWMELT WHICH...WHEN COMBINED WITH A DRYING TREND LATER THIS WEEK...SHOULD ALLOW WATER FLOW ON RIVERS AND STREAMS TO EASE DOWNWARD. && .GJT WATCHES/WARNINGS/ADVISORIES... CO...NONE. UT...NONE. && SHORT TERM...NL/15 LONG TERM...15 AVIATION...PF HYDROLOGY...TGJT
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 545 AM MDT MON JUN 15 2015 COZ001>014-017>023-UTZ022>025-027>029-161145- LOWER YAMPA RIVER BASIN-CENTRAL YAMPA RIVER BASIN- ROAN AND TAVAPUTS PLATEAUS-ELKHEAD AND PARK MOUNTAINS- UPPER YAMPA RIVER BASIN-GRAND VALLEY-DEBEQUE TO SILT CORRIDOR- CENTRAL COLORADO RIVER BASIN-GRAND AND BATTLEMENT MESAS- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN- WEST ELK AND SAWATCH MOUNTAINS-FLATTOPS- UPPER GUNNISON RIVER VALLEY-UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE- NORTHWEST SAN JUAN MOUNTAINS-SOUTHWEST SAN JUAN MOUNTAINS- PARADOX VALLEY/LOWER DOLORES RIVER- FOUR CORNERS/UPPER DOLORES RIVER-ANIMAS RIVER BASIN- SAN JUAN RIVER BASIN-SOUTHEAST UTAH-EASTERN UINTA MOUNTAINS- EASTERN UINTA BASIN-TAVAPUTS PLATEAU-ARCHES/GRAND FLAT- LA SAL AND ABAJO MOUNTAINS-CANYONLANDS/NATURAL BRIDGES- 545 AM MDT MON JUN 15 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS IS EXPECTED OVER THE HIGHER TERRAIN THIS AFTERNOON AND EVENING. A FEW STORMS WILL PASS OVER VALLEY LOCATIONS. STORMS NEAR THE WYOMING BORDER MAY BECOME STRONG WITH SMALL HAIL AND WIND GUSTS TO 40-50 MPH. ISOLATED STORMS MAY PERSIST UNTIL MIDNIGHT. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY AFTERNOON SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH WEDNESDAY THOUGH COVERAGE AND INTENSITY WILL DECREASE DAY BY DAY. .SPOTTER INFORMATION STATEMENT... THERE IS A SMALL CHANCE THAT SPOTTER ACTIVATION WILL BE NEEDED IN UINTAH COUNTY...OTHERWISE ACTIVATION IS NOT EXPECTED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 131 PM MDT MON JUN 15 2015 COZ008-010-152015- CENTRAL COLORADO RIVER BASIN CO- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS CO- 131 PM MDT MON JUN 15 2015 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN EAGLE AND NORTH CENTRAL PITKIN COUNTIES UNTIL 215 PM MDT... AT 130 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER BASALT...OR 21 MILES SOUTHEAST OF GLENWOOD SPRINGS...MOVING NORTHEAST AT 20 MPH. DIME SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... BASALT...SNOWMASS...SNOWMASS VILLAGE...EMMA...WOODY CREEK...EL JEBEL AND MERIDITH. PRECAUTIONARY/PREPAREDNESS ACTIONS... FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. && LAT...LON 3921 10708 3938 10717 3957 10672 3932 10658 TIME...MOT...LOC 1930Z 247DEG 18KT 3933 10704 JDC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 346 PM MDT MON JUN 15 2015 UTZ023-024-152230- EASTERN UINTA MOUNTAINS UT-EASTERN UINTA BASIN UT- 346 PM MDT MON JUN 15 2015 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN UINTAH COUNTY UNTIL 430 PM MDT... AT 345 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES NORTH OF WHITEROCKS...MOVING EAST AT 25 MPH. WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM. THIS STRONG THUNDERSTORM WILL BE NEAR... WHITEROCKS AROUND 350 PM MDT. OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE MAESER AND NAPLES. LAT...LON 4068 10949 4041 10951 4046 10998 4066 10998 TIME...MOT...LOC 2145Z 272DEG 22KT 4057 10999 15
The Salt Lake City radar (KMTX), 223 km away, was scanning. The volume nearest the first event began at 22:28 UTC.
1 hail. Local standard time, as filed.
Quarter-size hail was reported on top of Whiterocks Mountain. The hail accumulated to 3 inches deep in some areas.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2015Every state in 2015This day in weather historyWarnings in Utah, June 2015
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: 634643.