An unusually late-season low pressure system combined with unusually early-season deep subtropical moisture to fuel scattered thunderstorms over the Mojave Desert and southern Great Basin. Some storms produced flash flooding, and isolated wind damage also occurred.
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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 VEF wrote it up.
An unusually late-season low pressure system combined with unusually early-season deep subtropical moisture to fuel scattered thunderstorms over the Mojave Desert and southern Great Basin. Some storms produced flash flooding, and isolated wind damage also occurred.
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 Las Vegas, NV wrote its last area forecast discussion before the first event at Jun 10, 8:30 AM PST, 4 hours 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 930 AM PDT WED JUN 10 2015 .SYNOPSIS...AN AREA OF LOW PRESSURE WILL APPROACH FROM THE WEST AND BRING A CHANCE OF SHOWERS AND THUNDERSTORMS TO MUCH OF THE AREA TODAY THROUGH THURSDAY. THE BEST CHANCES WILL BE NORTH AND EAST OF LAS VEGAS. SEASONAL CONDITIONS RETURN BY WEEK'S END WITH MORE TYPICAL JUNE WEATHER EXPECTED OVER THE WEEKEND. && .UPDATE...NO MUCH CHANGE TO THE PREVIOUS THINKING FOR TODAY/TONIGHT. HOWEVER...I DECIDED TO ISSUE A FLASH FLOOD WATCH TO MATCH UP WITH OUR NEIGHBORS TO THE NORTH. THE WATCH INCLUDES THE NORTHERN HALF OF INYO COUNTY...ESMERALDA...CENTRAL NYE AND LINCOLN COUNTIES AND RUNS FROM 11 AM UNTIL 11 PM TODAY. ABUNDANT MOISTURE IS IN PLACE ACROSS THE AREA. A MID/UPPER LEVEL TROUGH WILL BE MOVING INTO THE AREA WITH PLENTY OF LIFT AND INSTABILITY. IN ADDITION...STORM MOTION LOOKS TO BE FAIRLY LIGHT IN CONTRAST TO AREAS FARTHER SOUTH WHERE STORMS WILL BE MOVING FAIRLY QUICKLY TO THE NORTHEAST. -HARRISON- && .PREV DISCUSSION 222 AM PDT WED JUN 10 2015 .SHORT TERM...THROUGH FRIDAY NIGHT. DEEP MOISTURE REMAINS IN PLACE THIS MORNING ACROSS A LARGE PORTION OF THE AREA WITH ONE INCH PRECIPITABLE WATER VALUES REACHING AS FAR NORTH AS NORTHERN LINCOLN COUNTY. SOUTHEAST SAN BERNARDINO AND SOUTHERN MOHAVE WERE AT 1.5 INCHES OR BETTER. THE 1 AM LAPS COMPUTED LIFTED INDEX SHOWS WEAK INSTABILITY ALONG THE MOISTURE AXIS THAT EXTENDS FROM THE SOUTHERN PORTIONS OF SAN BERN AND MOHAVE COUNTIES UP THROUGH EASTERN CLARK AND INTO LINCOLN COUNTY. THE AIRMASS WAS DESTABILIZING IN THE NORTHWEST PORTIONS OF THE FORECAST AREA AS WELL INCLUDING MUCH OF INYO AND ESMERALDA COUNTIES. CLOUDS THIS MORNING HAVE SCATTERED OUT IN MANY AREAS BUT REMAIN SOLIDLY OVERCAST OVER THE MAJORITY OF MOHAVE COUNTY WHERE WEAK RADAR RETURNS SHOWED LIGHT SHOWER ACTIVITY OCCURRING IN THE SOUTHERN PORTIONS OF THE COUNTY. LIGHT SHOWERS WERE ALSO NOTED IN SOUTHERN INYO COUNTY. LOW PRESSURE OFF THE SOUTHCENTRAL CALIFORNIA COAST WILL MOVE INLAND LATER THIS MORNING AND ACROSS THE FORECAST AREA TONIGHT INTO EARLY THURSDAY. MOISTURE LEVELS WILL BEGIN TO DECREASE TODAY BUT THE AIRMASS IS FORECAST TO BECOME WEAKLY UNSTABLE RESULTING IN A BETTER CHANCE FOR THUNDERSTORM DEVELOPMENT. BRIEF HEAVY RAIN AND STRONG GUSTY WINDS WILL BE THE PRIMARY CONCERNS TODAY WITH THE STRONGER STORMS. MINOR NUISANCE FLOODING IS POSSIBLE NEARLY ANYWHERE STORMS FORM BUT WITH ABUNDANT MOISTURE AVAILABLE, LOCALIZED FLASH FLOODING IS POSSIBLE WHERE HEAVIER THUNDERSTORMS DEVELOP. THE LOW MOVES EAST FRIDAY BUT TROUGHING REMAINS OVER THE AREA AND PORTIONS OF THE FORECAST AREA WILL CONTINUE TO SEE A CHANCE OF SHOWERS. BELOW NORMAL TEMPERATURES TODAY WILL RISE TO NEAR NORMAL THURSDAY AND ABOVE NORMAL FRIDAY. .LONG TERM...SATURDAY THROUGH WEDNESDAY. THE LATEST OPERATIONAL RUNS OF THE GFS AND ECMWF AND THEIR ASSOCIATED ENSEMBLE MEMBERS ARE IN FAIRLY GOOD AGREEMENT IN A WEAK SHORTWAVE TRAVERSING THE AREA SATURDAY...BRINGING ONE LAST CHANCE FOR A SHOWER OR THUNDERSTORM MAINLY IN THE HIGHER TERRAIN. A STRENGTHENING TROUGH OVER THE PACIFIC NORTHWEST WILL HELP TO CLEAR THIS FEATURE OUT OF THE AREA BY SUNDAY...INTRODUCING ZONAL FLOW TO THE AREA AND FINALLY MIXING OUT LINGERING MOISTURE FROM BLANCA. THERE IS GOOD AGREEMENT TONIGHT AMONG THE OPERATIONAL MODELS IN THE PACIFIC NORTHWEST LOW EMITTING A SUBTLE SHORTWAVE OUT OVER THE GREAT BASIN ON MONDAY. WITH LINGERING MOISTURE FROM BLANCA MOSTLY MIXED OUT ACROSS THE AREA...THIS FEATURE WILL YIELD LITTLE IN THE WAY OF WEATHER OUTSIDE OF BREEZY SOUTHWESTERLY WINDS ACROSS THE AREA. THIS WILL PROMOTE GOOD MIXING...ALLOWING TEMPERATURES TO REMAIN AROUND 4- 5 DEGREES ABOVE AVERAGE THROUGH THE END OF THE PERIOD DESPITE HEIGHT FALLS ALOFT ASSOCIATED WITH THE PASSING SHORTWAVE. && .AVIATION...FOR MCCARRAN...SOUTHERLY WINDS OF 5-10 KTS THROUGH 15Z THEN LIGHT AND VARIABLE. SOUTHWEST WINDS AROUND 15 KNOTS AFTER 21Z TODAY WITH HIGHER GUSTS. A CHANCE OF SHOWERS AND THUNDERSTORMS TODAY WITH STRONG GUSTY WINDS A THREAT. FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST CALIFORNIA...SOUTH WINDS 10-20 KTS WITH GUSTS TO 30 KTS THIS AFTERNOON. ISOLATED TO SCATTERED SHOWERS THIS MORNING THE SHOWERS AND THUNDERSTORMS EXPECTED THIS AFTERNOON. STRONG GUSTY WINDS AND BRIEF HEAVY RAIN ARE CONCERNS TODAY. && .SPOTTER INFORMATION STATEMENT...SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && SALMEN/PULLIN FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE: HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER
The Cedar City radar (KICX), 132 km away, was scanning. The volume nearest the first event began at 20:57 UTC.
2 flash flood, 1 heavy rain, 1 thunderstorm wind, 1 lightning. Local standard time, as filed.
Water and mud covered Echo Dam Road.
Water and mud were over Highway 264 in three places between mile markers 3 and 9.
Heavy rain in the Las Vegas Valley left several inches of standing water on some streets, knocked out power to over 1700 customers, and contributed to several vehicle accidents which resulted in seven injuries (indirect).
Thunderstorm winds blew out a 7-11 sign at Nellis and Stewart.
Lightning set fire to a palm tree near Nellis and Sahara.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2015Every state in 2015This day in weather historyWarnings in Nevada, 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: 578162, 578163, 578164, 578165, 578166.