Hail, Platte
- When
- June 14, 3:09 PM MST to 3:12 PM MST
- Where
- Platte County, 5 mi NW of Wheatland
- Measured
- 1.75 in hail
- Reported by
- Trained Spotter
- Coordinates
- 42.101, -105.019
Golf ball size hail was observed five miles northwest of Wheatland.
Hail in Wyoming, June 14, 2015
Afternoon and evening thunderstorms over southeast Wyoming produced numerous reports of large hail.
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
- 15
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 CYS wrote it up.
Afternoon and evening thunderstorms over southeast Wyoming produced numerous reports of large hail.
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 Cheyenne, WY wrote its last area forecast discussion before the first event at Jun 14, 2:14 PM MST, 55 minutes earlier.
Area forecast discussion, Jun 14, 2:14 PM MST, 55 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHEYENNE WY 314 PM MDT SUN JUN 14 2015 .SHORT TERM...(THIS EVENING THROUGH TUESDAY) ISSUED AT 310 PM MDT SUN JUN 14 2015 WEAK FRONT HAS MOVED THROUGH THE REGION WITH NORTH TO NORTHEAST WINDS BEHIND IT. TSTMS HAVE DEVELOPED ALONG THE SFC TROUGH FROM EXTREME NORTHEASTERN COLORADO INTO CENTRAL NEBRASKA. THESE STORMS ARE NOT MAKING MUCH HEADWAY TO THE WEST AND ARE RATHER STATIONARY. MOST OF THE MODELS SHOW AN UPTICK IN SHOWER/TSTM COVERAGE ALONG AND EAST OF THE LARAMIE RANGE AFTER 00Z. THE HRRR DOES SHOW SOME STRONGER STORMS INITIATING OVER THE NORTHERN LARAMIE RANGE AND MOVING ACROSS PORTIONS OF CONVERSE AND NORTHERN PLATTE COUNTIES FROM 00-03Z. LAPS ANALYSIS DOES SHOW 1500 J/KG OF CAPE UP THERE ALONG WITH A BIT STRONGER FLOW ALOFT THAT YIELDS DEEP LAYER SHEAR OF AROUND 30KTS. THE CONVECTIVE ENVIRONMENT WOULD SUPPORT SMALL HAIL OR EVEN A MARGINALLY SEVERE STORM THROUGH THE EVENING. THE TSTM THREAT WILL CONTINUE INTO THE EARLY NIGHT (A BIT LATER THAN NORMAL) OVER MAINLY SOUTHEAST WY AS THE MODELS INDICATE ELEVATED INSTABILITY. GENERALLY HAVE 40-50 PERCENT POPS THROUGH 06Z. ALSO ADDED PATCHY FOG ALONG THE LARAMIE RANGE BY LATE TONIGHT...ALTHOUGH THIS WILL DEPEND ON ANY ONGOING RAIN. LOTS OF LOW CLOUDS WILL BE PRESENT THROUGH MIDDAY MONDAY TO THE EAST OF THE LARAMIE RANGE WITH MOIST SOUTHEASTERLY UPSLOPE IN PLACE. INSTABILITY IS WEAK OVER MUCH OF THE PLAINS IN THE POST FRONTAL AIRMASS. THE GFS SHOWS THE BEST INSTABILITY ALONG THE LARAMIE RANGE WITH CAPE VALUES OF 1250-1500 J/KG. SPC HAS MUCH OF SOUTHEAST WY IN A MARGINAL RISK AND THIS LOOKS GOOD. STORMS COULD WAIT TO INITIATE UNTIL THE EARLY EVENING ALONG THE LARAMIE RANGE SINCE THERE WILL BE A GOOD DEAL OF INHIBITION THROUGH THE DAY. A SHORTWAVE WILL APPROACH CENTRAL WY BY THE EVENING AND MOVE ACROSS EASTERN WY DURING THE NIGHT. THIS WILL LIKELY KEEP THE STORMS GOING...SOME POTENTIALLY STRONG... THROUGH SUNRISE ON TUES ESPECIALLY OVER CONVERSE/NIOBRARA COUNTIES. THE BEST SVR THREAT IS STILL LOOKING LIKE TUES AFTN OVER THE NEBRASKA PANHANDLE. CYCLOGENESIS OCCURS SOMEWHERE NEAR THE WY-NE BORDER BY THE AFTN WITH SOUTHERLY WINDS TO EAST OF THE DRYLINE. WITH DEWPOINTS OF 55-60F AND WARM SFC TEMPS...CAPE IS UP TO 2500 J/KG...AND BULK SHEAR IS 45-50 KTS...A GOOD ENVIRONMENT FOR STRONG SUPERCELLS AND LARGE HAIL. .LONG TERM...(TUESDAY NIGHT THROUGH SATURDAY) ISSUED AT 310 PM MDT SUN JUN 14 2015 AN ACTIVE PATTERN SHOULD PERSIST THROUGH THE PERIOD WITH QUASI-ZONAL FLOW ALOFT STAYING INTACT OVER THE CWA. WHILE MODELS DIFFER SLIGHTLY IN THE TIMING/PLACEMENT OF INDIVIDUAL DISTURBANCES...PERSISTENT LEE TROUGHING AND PERIODIC LOW-LEVEL UPSLOPE SHOULD BE SUFFICIENT FOR AT LEAST ISOLATED CONVECTION EACH AFTN/EVE. THE BEST CHANCE FOR A MORE WIDESPREAD CONVECTIVE EVENT APPEARS TO BE WED EVENING WITH EXCELLENT CONVERGENCE AND EASTERLY UPSLOPE NEAR THE SFC. THE GFS SUGGESTS DEW POINTS IN THE 50S ALONG/EAST OF THE LARAMIE RANGE WITH SBCAPE VALUES BETWEEN 1500-2500 J/KG. STRONG MID-LEVEL FLOW WILL HELP BOOST 0-6 KM SHEAR VALUES TO 40+ KTS FOR MUCH OF THE AREA...SO SEVERE CONVECTION COULD VERY WELL BE A HAZARD. BIG QUESTION WILL BE HOW LONG IT TAKES TO ERODE THE CAP WITH WARM AIR ADVECTING IN FROM THE WEST. GENERALLY A TYPICAL WEATHER PATTERN FOR THIS TIME OF YEAR. TEMPERATURES SHOULD BE SEASONAL WITH A GRADUAL WARMING TREND EXPECTED THROUGH THE END OF THE WEEK. FRIDAY COULD BE RATHER WARM WITH GFS/ECM H7 TEMPS IN THE 16-18 DEG C RANGE OVER MUCH OF THE AREA BENEATH FLAT RIDGING. LATEST MEX GUIDANCE SUGGESTS UPPER 80S INTO THE MID 90S FROM CYS TO SNY... BUT HARD TO SAY HOW MUCH AFTERNOON CU WILL IMPACT HIGHS. CONTINUED TO TREND WARMER IN THIS PATTERN. THINK WE WILL STILL HAVE AT LEAST A FEW SHOWERS/THUNDERSTORMS AROUND ON THU/FRI...BUT STRONG CAPPING IS LIKELY WITH SUCH WARM THERMAL PROFILES. KEPT THINGS ISOLATED FOR THE TIME BEING. && .AVIATION...(FOR THE 18Z TAFS THROUGH 18Z MONDAY AFTERNOON) ISSUED AT 1202 PM MDT SUN JUN 14 2015 VFR CONDITIONS WILL PREVAIL FOR MOST AREAS TODAY WITH ISOLATED TO WIDELY SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING IN THE LATE AFTERNOON AND EVENING. LOCALLY MVFR CIGS WILL OCCUR OVER THE KAIA AND KCDR. BRIEF MVFR CIGS/VSBYS WILL BE POSSIBLE BENEATH HEAVIER THUNDERSTORMS LATER TODAY AND TONIGHT...ALONG WITH GUSTY/ERRATIC WINDS. THE GREATEST COVERAGE OF STORMS WILL OCCUR IN THE EVENING AND OVERNIGHT. IFR/LIFR CONDITIONS ARE EXPECTED AT KCYS AFTER 06Z WITH LIGHT UPSLOPE FLOW...MVFR ELSEWHERE THROUGH AT LEAST 15Z. && .FIRE WEATHER... ISSUED AT 310 PM MDT SUN JUN 14 2015 NO FIRE WEATHER CONCERNS THROUGH THE MIDDLE OF NEXT WEEK. AFTER A COOLER DAY ON MONDAY...TEMPERATURES WILL BE WARMER ON TUESDAY AND WEDNESDAY. MINIMUM RELATIVE HUMIDITY VALUES WILL DROP TO 20-30 PERCENT TO THE WEST OF THE LARAMIE RANGE ON TUESDAY AND WEDNESDAY AFTERNOONS WITH OCCASIONAL GUSTS TO 25-30 MPH. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...NONE. NE...NONE. && SHORT TERM...ZF LONG TERM...CLH AVIATION...CLH FIRE WEATHER...ZF
Hazardous weather outlook, Jun 14, 2:06 PM MST, 1 hour 3 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 306 PM MDT SUN JUN 14 2015 NEZ002-003-019>021-054-055-095-096-152115- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 306 PM MDT SUN JUN 14 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN NEBRASKA. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THROUGH THE EARLY NIGHT. SEVERE STORMS ARE NOT EXPECTED...HOWEVER SMALL HAIL COULD OCCUR WITH THE STRONGER STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ISOLATED THUNDERSTORMS WILL BE POSSIBLE ON MONDAY AFTERNOON AND EVENING. MORE WIDESPREAD THUNDERSTORMS ARE POSSIBLE ON TUESDAY AFTERNOON AND EVENING AND SOME OF THE STORMS COULD BE SEVERE WITH LARGE HAIL AND DAMAGING WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE REQUIRED THROUGH TONIGHT. WYZ101>119-152115- CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY- NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS- SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY- NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY- SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE- LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY- 306 PM MDT SUN JUN 14 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL WYOMING...SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THROUGH THE EARLY NIGHT. SEVERE STORMS ARE NOT EXPECTED...HOWEVER SMALL HAIL COULD OCCUR WITH THE STRONGER STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY SCATTERED THUNDERSTORMS CAN BE EXPECTED ON MOST AFTERNOONS AND EVENINGS. SOME STRONGER STORMS WITH SMALL HAIL WILL BE POSSIBLE ALONG AND WEST OF THE LARAMIE RANGE ON MONDAY. THERE COULD BE A FEW SEVERE STORMS TO THE EAST OF THE LARAMIE RANGE ON TUESDAY WITH THE PRIMARY THREATS BEING LARGE HAIL AND DAMAGING WINDS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE REQUIRED THROUGH TONIGHT.
In the hours before
Special weather statement, Jun 14, 1:59 PM MST, 1 hour 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 259 PM MDT SUN JUN 14 2015 WYZ103-106-107-142130- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY WY- EAST PLATTE COUNTY WY-NORTH LARAMIE RANGE WY- 259 PM MDT SUN JUN 14 2015 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PLATTE COUNTY UNTIL 330 PM MDT... AT 257 PM MDT...DOPPLER RADAR WAS TRACKING AN AREA OF STRONG THUNDERSTORMS THAT HAVE RECENTLY DEVELOPED ALONG THE EASTERN SLOPES OF THE NORTHERN LARAMIE RANGE. THESE STORMS ARE MOVING NORTHEAST AT 10 MPH. DIME SIZE HAIL WILL BE POSSIBLE WITH THESE STORMS. THESE STORMS WILL REMAIN OVER MAINLY RURAL AREAS OF NORTHWESTERN PLATTE COUNTY WEST OF INTERSTATE 25 THROUGH 330 PM MDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. && LAT...LON 4244 10507 4219 10504 4217 10527 4240 10528 TIME...MOT...LOC 2057Z 228DEG 14KT 4241 10523 4224 10521 HAHN
Special weather statement, Jun 14, 2:46 PM MST, 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 346 PM MDT SUN JUN 14 2015 WYZ106-107-142215- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY WY- EAST PLATTE COUNTY WY- 346 PM MDT SUN JUN 14 2015 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL PLATTE COUNTY UNTIL 415 PM MDT... AT 345 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR LAKEVIEW NORTH...OR 3 MILES NORTHWEST WHEATLAND...MOVING EAST AT 15 MPH. DIME SIZE HAIL WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... NORTHERN PARTS OF WHEATLAND...LAKEVIEW NORTH...CHUGCREEK AND WESTVIEW CIRCLE. THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 80 AND 88. 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 4208 10513 4216 10511 4219 10481 4203 10480 TIME...MOT...LOC 2145Z 265DEG 16KT 4211 10503 HAHN
Local storm report, Jun 14, 2:59 PM MST, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
359 PM MDT SUN JUN 14 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0356 PM HAIL 24 NW WHEATLAND 42.30N 105.29W
06/14/2015 E0.50 INCH ALBANY WY PUBLIC
HAIL PEA TO MARBLE SIZE AND RAIN OF ONE HALF INCH.
&&
DDEALLocal storm report, Jun 14, 3:00 PM MST, 9 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE CHEYENNE WY
400 PM MDT SUN JUN 14 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0332 PM HAIL 24 NW WHEATLAND 42.30N 105.29W
06/14/2015 E0.50 INCH ALBANY WY PUBLIC
HAIL PEA TO MARBLE SIZE AND RAIN OF ONE HALF INCH.
&&
DDEALThe radar
The Cheyenne radar (KCYS), 107 km away, was scanning. The volume nearest the first event began at 22:08 UTC.
Event by event
15 hail. Local standard time, as filed.
Hail, Platte
- When
- June 14, 3:13 PM MST to 3:18 PM MST
- Where
- Platte County, Wheatland
- Measured
- 1.25 in hail
- Reported by
- Trained Spotter
- Coordinates
- 42.050, -104.950
Quarter size hail was observed at Wheatland.
Hail, Platte
- When
- June 14, 3:23 PM MST to 3:25 PM MST
- Where
- Platte County, 1.69 mi ESE of Ferguson Corner
- Measured
- 2 in hail
- Reported by
- Public
- Coordinates
- 41.950, -104.950
Hen egg size hail was reported at Interstate 25 mile marker 73.
Hail, Platte
- When
- June 14, 3:25 PM MST to 3:27 PM MST
- Where
- Platte County, 8 mi S of Wheatland
- Measured
- 2.5 in hail
- Reported by
- Public
- Coordinates
- 41.934, -104.950
Tennis ball size hail was reported near Interstate 25 eight miles south of Wheatland.
Hail, Platte
- When
- June 14, 3:27 PM MST to 3:30 PM MST
- Where
- Platte County, 6 mi SW of Wheatland
- Measured
- 2 in hail
- Reported by
- Trained Spotter
- Coordinates
- 41.989, -105.033
Hen egg size hail was observed six miles southwest of Wheatland.
Hail, Platte
- When
- June 14, 3:48 PM MST to 3:50 PM MST
- Where
- Platte County, 8 mi NNW of Chugwater
- Measured
- 1.75 in hail
- Reported by
- Trained Spotter
- Coordinates
- 41.867, -104.879
Golf ball size hail was observed eight miles north-northwest of Chugwater.
Hail, Platte
- When
- June 14, 4:05 PM MST to 4:08 PM MST
- Where
- Platte County, Chugwater
- Measured
- 1.75 in hail
- Reported by
- Trained Spotter
- Coordinates
- 41.760, -104.820
Golf ball size hail was observed at Chugwater.
Hail, Platte
- When
- June 14, 4:32 PM MST to 4:35 PM MST
- Where
- Platte County, 4 mi E of Chugwater
- Measured
- 1.5 in hail
- Reported by
- Broadcast Media
- Coordinates
- 41.760, -104.742
Half dollar to ping pong ball size hail was reported four miles east of Chugwater.
Hail, Laramie
- When
- June 14, 4:47 PM MST to 4:50 PM MST
- Where
- Laramie County, 20.09 mi WNW of Meriden
- Measured
- 1 in hail
- Reported by
- Trained Spotter
- Coordinates
- 41.650, -104.680
Quarter size hail was observed 10 miles southeast of Chugwater.
Hail, Laramie
- When
- June 14, 5:22 PM MST to 5:25 PM MST
- Where
- Laramie County, 18.63 mi W of Meriden
- Measured
- 1.75 in hail
- Reported by
- Public
- Coordinates
- 41.550, -104.680
Golf ball size hail was reported 14 miles northeast of Whitaker.
Hail, Laramie
- When
- June 14, 6:02 PM MST to 6:05 PM MST
- Where
- Laramie County, 10.07 mi N of (Cys)cheyenne Airport
- Measured
- 1 in hail
- Reported by
- NWS Employee
- Coordinates
- 41.305, -104.790
Quarter size hail was reported 10 miles north of Cheyenne.
Hail, Laramie
- When
- June 14, 6:05 PM MST to 6:08 PM MST
- Where
- Laramie County, 13 mi NNE of Cheyenne
- Measured
- 2.5 in hail
- Reported by
- Public
- Coordinates
- 41.314, -104.724
Tennis ball size hail was reported 13 miles north-northeast of Cheyenne.
Hail, Laramie
- When
- June 14, 6:15 PM MST to 6:18 PM MST
- Where
- Laramie County, 5 mi E of Cheyenne
- Measured
- 1 in hail
- Reported by
- Public
- Coordinates
- 41.140, -104.724
Quarter size hail was reported five miles east of Cheyenne.
Hail, Laramie
- When
- June 14, 6:49 PM MST to 6:52 PM MST
- Where
- Laramie County, Burns
- Measured
- 1 in hail
- Reported by
- Trained Spotter
- Coordinates
- 41.190, -104.360
Quarter size hail was observed at Burns.
Hail, Laramie
- When
- June 14, 7:05 PM MST to 7:10 PM MST
- Where
- Laramie County, 1.25 mi WSW of Egbert
- Measured
- 1 in hail
- Reported by
- Trained Spotter
- Coordinates
- 41.160, -104.280
Quarter size hail was observed three miles southeast of Burns.
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
- Rip Current in Texas, June 14, 2015
- Wildfire in Alaska, June 14 to 29, 2015
- Flash Flooding in New York, June 14 to 15, 2015
- Flash Flooding and Damaging Winds in Pennsylvania, June 14 to 15, 2015
- Flash Flooding in New York, June 14, 2015
- Flash Flood and Hail in Ohio, June 14 to 15, 2015
- Flash Flooding and Heavy Rain in Iowa, June 14 to 15, 2015
- Flooding and Hail in Colorado, June 14 to 22, 2015
- Flash Flood and Hail in Texas, June 14, 2015
- Flash Flooding and Flooding in Kansas, June 14 to 19, 2015
- Hail and Damaging Winds in Texas, June 14, 2015
- Heat in South Carolina, June 14 to 26, 2015
More
Every storm in Wyoming in 2015Every state in 2015This day in weather historyWarnings in Wyoming, June 2015
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: 585950, 585952, 585956, 585957, 585959, 585964, 585966, 585972, 585977, 585978, 585979, 585980, 585981, 585982, 585947.