Early evening thunderstorms produced a few reports of large hail and damaging winds across northern Converse County.
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 CYS wrote it up.
Early evening thunderstorms produced a few reports of large hail and damaging winds across northern Converse County.
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 Jul 5, 2:22 PM MST, 4 hours 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHEYENNE WY 322 PM MDT FRI JUL 5 2013 .SHORT TERM...(THIS EVENING THROUGH SATURDAY) ISSUED AT 315 PM MDT FRI JUL 5 2013 SHORTWAVE TROUGH IS MOVING ACROSS WESTERN WYOMING EARLY THIS AFTERNOON WITH PLENTIFUL MOISTURE MOVING OVERHEAD IN WESTERLY FLOW ALOFT. SCATTERED TO WIDESPREAD SHOWERS AND THUNDERSTORMS HAVE DEVELOPING MAINLY ALONG AND WEST OF THE LARAMIE RANGE WITHIN THIS MOISTURE PLUME AND WEAKLY UNSTABLE ENVIRONMENT...WITH BLENDED AMSU-SSM/I PWATS ANALYZED TO BE AROUND 1 INCH. WILL CONTINUE TO SEE THIS AND NEW DEVELOPMENT TREK EASTWARD THROUGH THE AFTERNOON AS THE UPPER WAVE CONTINUES TO MOVE OVERHEAD AND FURTHER HEATING DESTABILIZES THE EASTERN PLAINS. MESOANALYSIS AT 20Z SHOWS WEAK DEEP LAYER SHEAR OVER THE FORECAST AREA WITH RAP FORECAST MAINTAINING SHEAR OF ABOUT 35 KT OR LESS THROUGH THIS AFTERNOON...SO STORMS WILL LIKELY REMAIN MODERATE TO HEAVY RAIN PRODUCERS WITH A FEW PRODUCING SMALL HAIL AND GUSTY WINDS. ALL IN ALL...SOME MUCH NEEDED RAINS WILL FALL OVER MUCH OF THE FORECAST AREA TODAY AND THIS EVENING. THE DEEPEST OF THE MOISTURE PLUME WILL SHIFT EAST TONIGHT AND TOMORROW ALTHOUGH STILL LOOKING AT PWATS TO BE ONE HALF INCH TO ONE INCH FROM WEST TO EAST BY TOMORROW AFTERNOON. A WEAK COOL FRONT WILL MOVE SOUTH ACROSS THE EASTERN PLAINS LATE TOMORROW MORNING WITH WINDS SHIFTING TO THE NORTH THEN EAST BEHIND THE FRONT AS IT STALLS ALONG THE LARAMIE RANGE. SHOULD SEE WEAK SHOWERS WITH PERHAPS A CLAP OF THUNDER DEVELOP ALONG THE FRONT IN THE MORNING. A BROADER COVERAGE OF STORMS WILL DEVELOP IN THE HIGH TERRAIN IN THE AFTERNOON AS ANOTHER SHORTWAVE APPROACHES FROM THE WEST IN ADDITION TO WITHIN THE CONVERGENCE ALONG THE LARAMIE RANGE. BULK SHEAR WILL BE ABOUT 10 KT HIGHER TOMORROW THAN TODAY SO COULD SEE MORE ORGANIZED STORMS PRODUCE STRONGER WINDS AND PERHAPS LARGER HAIL. STILL NOT EXPECTING ANYTHING SEVERE HOWEVER WITH WEAK INSTABILITY FORECAST...MORESO AGAIN THE MAIN THREAT WITH THIS ACTIVITY WILL REMAIN MODERATE TO HEAVY RAIN. .LONG TERM...(SATURDAY NIGHT THROUGH FRIDAY) ISSUED AT 315 PM MDT FRI JUL 5 2013 A CONSENSUS OF THE LATEST MEDIUM RANGE MODEL GUIDANCE SUGGESTS THAT THE UNSETTLED WEATHER PATTERN WILL CONTINUE INTO THE EARLY PART OF THE WEEK. A BROAD UPPER RIDGE WILL DOMINATE THE SOUTHERN HALF OF THE CONUS WITH THE FASTER WESTERLIES CONFINED TO THE NORTHERN STATES. A ZONAL FLOW ALOFT WILL TRANSPORT PACIFIC MOISTURE AS WELL AS SOME SHORTWAVE ENERGY ACROSS THE REGION DURING THIS TIME. SCATTERED DEEP MOIST CONVECTION WILL DEVELOP SUNDAY AND MONDAY...MAINLY DURING THE AFTERNOON AND EVENING. BEST INSTABILITY AND 0-6KM SHEAR (SBCAPES 1000-1500 J/KG AND 30-40 KT RESPECTIVELY) WILL BE ALONG AN AXIS FROM NORTHEAST WYOMING THROUGH THE BLACK HILLS AND WESTERN NEBRASKA BOTH SUNDAY AND MONDAY. SO THE POTENTIAL WILL EXIST FOR ISOLATED STRONG TO SEVERE TSTORMS PRODUCING STRONG WINDS AND HAIL. THIS WOULD INCLUDE AREAS EAST OF A LINE FROM DOUGLAS TO TORRINGTON TO KIMBALL. HIGH PRECIP WATER VALUES (0.75 TO 1.25 INCHES) WILL YIELD EFFICIENT RAIN-PRODUCING STORMS. TUESDAY...THE AXIS OF GREATER INSTABILITY AND SHEAR WILL BE LOCATED OVER CENTRAL SOUTH DAKOTA AND NEBRASKA. SOMEWHAT DRIER AIR WILL SPREAD EAST ACROSS THE CWA AT THAT TIME...LIMITING THE CONVECTION TO ISOLATED MAINLY ALONG AND EAST OF THE MOUNTAINS. WEDNESDAY... HIGHER INSTABILITY TRIES TO ADVECT NORTHWESTWARD INTO THE EASTERN PLAINS DURING THE AFTERNOON AND EVENING. HOWEVER...WARMER AIR ALOFT WILL ONCE AGAIN KEEP CONVECTION ISOLATED. CANNOT RULE OUT A FEW STRONG TSTORMS. THURSDAY LOOKS DRY WITH THE UPPER RIDGE AND MID LEVEL CAP SUPPRESSING CONVECTION. THE RIDGE AXIS SHIFTS EAST INTO THE HIGH PLAINS FRIDAY WITH THE FLOW ALOFT BECOMING SOUTHWEST. THIS MAY ADVECT SOME PACIFIC MOISTURE INTO THE CWA FOR ISOLATED AFTERNOON CONVECTION OVER THE HIGHER TERRAIN. TEMPERATURES DURING THE EXTENDED FORECAST PERIOD WILL CONTINUE TO AVERAGE ABOVE SEASONAL NORMALS. && .AVIATION...(FOR THE 18Z TAFS THROUGH 18Z SATURDAY MORNING) ISSUED AT 1155 AM MDT FRI JUL 5 2013 SCATTERED SHOWERS AND TSTORMS WILL DEVELOP THIS AFTERNOON OVER THE HIGH TERRAIN AND MOVE EAST ACROSS THE PLAINS THROUGH THE EVENING. MVFR CIGS/VSBYS ARE POSSIBLE WITH THIS ACTIVITY ALONG WITH GUSTY ERRATIC DOWNDRAFT WINDS. OTHERWISE VFR CONDITIONS WILL PREVAIL... WITH GENERALLY BREEZY SOUTHWEST WINDS ALONG AND WEST OF THE LARAMIE RANGE AND SOUTHEAST WINDS FURTHER EAST. A WEAK COOL FRONT MOVING SOUTH ACROSS THE PLAINS SATURDAY MORNING WILL SHIFT WINDS TO THE NORTHWEST...WITH GUSTS UP TO 20 MPH POSSIBLE BEHIND THE FRONT. && .FIRE WEATHER... ISSUED AT 315 PM MDT FRI JUL 5 2013 THE FIRE WEATHER THREAT WILL REMAIN MARGINAL THROUGH THE WEEKEND AS PLENTIFUL AVAILABLE MOISTURE WILL MAINTAIN GOOD CHANCES FOR WETTING RAINS OVER MUCH OF THE DISTRICT. THUNDERSTORMS SHOULD DEVELOP ACROSS THE FORECAST AREA EACH AFTERNOON AND WILL PRODUCE GUSTY WINDS ESPECIALLY WEST OF THE LARAMIE RANGE...ALONG WITH MODERATE TO LOCALLY HEAVY RAINFALL AT TIMES. OTHERWISE...GENERAL WINDS WILL REMAIN RELATIVELY LIGHT WITH A FEW LOCATIONS IN THE WIND PRONE AREAS SEEING SOUTHWEST WINDS GUSTING TO 30 MPH IN THE AFTERNOON. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...NONE. NE...NONE. && SHORT TERM...RJM LONG TERM...MAJ AVIATION...RJM FIRE WEATHER...RJM
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1059 AM MDT FRI JUL 5 2013 WYZ101>119-061700- 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- 1059 AM MDT FRI JUL 5 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL WYOMING... SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS WILL DEVELOP OVER THE SOUTHEAST WYOMING MOUNTAINS EARLY THIS AFTERNOON AND WILL SPREAD EAST THROUGH THE LATE AFTERNOON AND EVENING. GUSTY WINDS TO 45 MPH...A BRIEF PERIOD OF MODERATE TO HEAVY RAIN AND OCCASIONAL LIGHTNING WILL ACCOMPANY THE THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE EACH DAY. THE POTENTIAL FOR SEVERE WEATHER RETURNS TO THE SOUTHEAST WYOMING PLAINS ON SUNDAY AND MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE NEZ002-003-019>021-054-055-095-096-061700- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 1059 AM MDT FRI JUL 5 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE. .DAY ONE...TODAY AND TONIGHT ISOLATED THUNDERSTORMS WILL DEVELOP AND MOVE INTO THE WESTERN NEBRASKA PANHANDLE THIS AFTERNOON AND EVENING. GUSTY WINDS TO 45 MPH...A BRIEF PERIOD OF MODERATE TO HEAVY RAIN AND OCCASIONAL LIGHTNING WILL ACCOMPANY THE THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE EACH DAY. THE POTENTIAL FOR SEVERE WEATHER RETURNS TO THE PANHANDLE ON SUNDAY AND MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
357 PM MDT FRI JUL 05 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0356 PM HAIL WHEATLAND 42.05N 104.96W
07/05/2013 E0.25 INCH PLATTE WY TRAINED SPOTTER
&&
BCHAPMANSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 402 PM MDT FRI JUL 5 2013 WYZ106>108-052245- CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY WY-EAST PLATTE COUNTY WY-GOSHEN COUNTY WY- 402 PM MDT FRI JUL 5 2013 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN PLATTE AND WESTERN GOSHEN COUNTIES UNTIL 445 PM MDT... AT 357 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR WHEATLAND...MOVING SOUTHEAST AT 20 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... GRAYROCKS RESERVOIR... THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 74 AND 84. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. && LAT...LON 4210 10441 4178 10455 4201 10505 4218 10496 TIME...MOT...LOC 2202Z 292DEG 16KT 4206 10489 TJT
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
418 PM MDT FRI JUL 05 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0417 PM HAIL 10 E WHEATLAND 42.05N 104.76W
07/05/2013 E0.25 INCH PLATTE WY TRAINED SPOTTER
HEAVY RAIN
&&
BCHAPMANSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 454 PM MDT FRI JUL 5 2013 WYZ108-060000- GOSHEN COUNTY WY- 454 PM MDT FRI JUL 5 2013 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN GOSHEN COUNTY UNTIL 600 PM MDT... AT 451 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 13 MILES WEST OF VETERAN...OR 22 MILES SOUTHEAST OF WHEATLAND...MOVING EAST AT 15 MPH. HAIL UP TO THE SIZE OF NICKELS IS EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... VETERAN... YODER... HAWK SPRINGS... HAWK SPRINGS RECREATION AREA... HAWK SPRINGS CAMPGROUND... TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. && LAT...LON 4195 10413 4168 10419 4181 10465 4204 10465 TIME...MOT...LOC 2254Z 287DEG 14KT 4189 10456 APFEL
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 630 PM MDT FRI JUL 5 2013 WYZ101-060115- CONVERSE COUNTY LOWER ELEVATIONS WY- 630 PM MDT FRI JUL 5 2013 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CONVERSE COUNTY UNTIL 715 PM MDT... AT 628 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR ROLLING HILLS ESTATES...OR 24 MILES EAST OF EVANSVILLE...MOVING SOUTHEAST AT 20 MPH. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... DOUGLAS... DEER CREEK... THIS INCLUDES INTERSTATE 25 IN WYOMING BETWEEN MILE MARKERS 136 AND 161. && LAT...LON 4291 10525 4268 10537 4287 10595 4304 10586 TIME...MOT...LOC 0030Z 290DEG 20KT 4293 10579 APFEL
The Cheyenne radar (KCYS), 213 km away, was scanning. The volume nearest the first event began at 01:33 UTC.
2 hail, 1 thunderstorm wind. Local standard time, as filed.
Thunderstorm outflow wind gusts estimated near 70 mph caused significant damage to a porch and shingle roof along 55 Ranch Road and near Highway 95 mile post 10 northeast of Rolling Hills Estates.
Marble to quarter size hail was reported 25 miles west-northwest of Bill.
Dime to quarter size hail was reported west of Bill.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2013Every state in 2013This day in weather historyWarnings in Wyoming, July 2013
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: 451452, 451453, 451454.