An early season push of monsoon moisture fueled isolated thunderstorms over the Mojave Desert. Spotty high winds and flash flooding 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 early season push of monsoon moisture fueled isolated thunderstorms over the Mojave Desert. Spotty high winds and flash flooding 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 30, 1:50 PM PST, 2 hours 24 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 250 PM PDT TUE JUN 30 2015 .SYNOPSIS...HIGH PRESSURE WILL CONTINUE TO WOBBLE OVER UTAH AND NEVADA THROUGH THE WEEK INTO THE WEEKEND KEEPING TEMPERATURES ABOVE NORMAL. THERE WILL BE ENOUGH MOISTURE AND INSTABILITY IN PLACE FOR A CHANCE OF THUNDERSTORMS EACH AFTERNOON AND EVENING...MAINLY OVER THE MOUNTAINS AND MOHAVE COUNTY. && .SHORT TERM...TONIGHT THROUGH FRIDAY. OVERALL IT LOOKS LIKE NO SIGNIFICANT CHANGE IN THE OVERALL PATTERN THROUGH FRIDAY WITH HIGH PRESSURE WANDERING BETWEEN UTAH AND NORTHERN NEVADA. THIS WILL KEEP A SOUTHEASTERLY FLOW OVER THE AREA WITH FAIRLY HIGH MOISTURE CONTENT FOR LATE JUNE ALONG WITH LIMITED INSTABILITY. AS A RESULT WE WILL SEE ISOLATED TO SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS ACROSS A GOOD PORTION OF THE FORECAST AREA EACH DAY. THE BEST CHANCES STILL LOOK TO BE OVER THE MOUNTAINS AND MOHAVE COUNTY. ALTHOUGH THE BASIC PATTERN DOES NOT CHANGE MUCH THROUGH FRIDAY...IT LOOKS LIKE THERE WILL BE A COUPLE OF WAVES TO KEEP AN EYE OUT FOR. THE FIRST LOOKS LIKE IT MOVES WEST ACROSS THE MEXICO/ARIZONA/CALIFORNIA BORDER AREA TONIGHT INTO WEDNESDAY. THIS MAY BRING MORE SHOWERS/THUNDERSTORMS INTO SOUTHERN PORTIONS OF SAN BERNARDINO AND MOHAVE COUNTIES DURING THE OVERNIGHT HOURS TONIGHT. A SECOND WAVE FOLLOWS CLOSE BEHIND WEDNESDAY NIGHT ACCORDING TO THE MODELS WHICH MAY KEEP A SLIGHT CHANCE OF SHOWERS OR THUNDERSTORMS GOING WEDNESDAY NIGHT. CONFIDENCE IN THE TIMING/TRACK/IMPACTS OF THESE FEATURES IS FAIRLY LOW AT THIS TIME. .LONG TERM...SATURDAY THROUGH TUESDAY. THE MEDIUM RANGE MODELS NOW INDICATE THE HIGH CENTER WILL HEAD OVER THE FOUR CORNERS REGION BY INDEPENDENCE DAY WHICH WILL LEAD TO A SOUTHERLY FLOW DEVELOPING OVER MUCH OF THE FORECAST AREA. THIS IS A FASTER PATTERN SHIFT THAN WAS INDICATED 24 HOURS AGO AND IT WOULD OPEN THE DOOR FOR ANY MOISTURE TO MOVE UP FROM NORTHWEST MEXICO. THERE IS NOT MUCH INDICATION YET OF ANY SIGNIFICANT MOISTURE AND I WILL KEEP JUST A SLIGHT CHANCE OF THUNDERSTORMS OVER THE MOUNTAINOUS ARES AND NOT MENTION THUNDERSTORMS FOR MOST OF THE MOJAVE DESERT FOR NOW. THE GFS SOLUTION INDICATES SOUTHERLY FLOW MAY GRADUALLY TURN SOUTHWESTERLY AND BECOME DRIER SUNDAY THROUGH TUESDAY AS A BROAD EASTERN PACIFIC TROUGH SLOWLY MOVES INLAND. THE GFS INDICATES THIS DRYING TREND MORE THAN THE ECMWF AND CONFIDENCE IS LOW IN THE TIMING OF THESE SUBTLE CHANGES. I WILL KEEP A SLIGHT CHANCE OF THUNDERSTORMS OVER THE HIGHER TERRAIN THROUGH EARLY NEXT WEEK. TEMPERATURES WILL TREND DOWNWARD SLIGHTLY WITH THIS PATTERN BUT WILL REMAIN HOT...WITH HIGHS STILL AROUND 105 FOR LAS VEGAS. && .AVIATION...FOR MCCARRAN...WINDS SHOULD FAVOR A SOUTHEASTERLY DIRECTION THROUGH EARLY EVENING WITH SPEEDS UNDER 10 KNOTS. TYPICAL SOUTHWEST WINDS SHOULD DEVELOP AFTER SUNSET. LIGHT EAST TO SOUTHEAST WINDS ARE EXPECTED MOST OF WEDNESDAY BEFORE BECOMING SOUTH/SOUTHWEST AROUND 00Z OR 01Z. THUNDERSTORMS ARE EXPECTED TO REMAIN CONFINED MAINLY TO THE MOUNTAINS AND NORTHWEST ARIZONA THROUGH TUESDAY...WITH ONLY A SLIGHT CHANCE OF SHOWERS AT THE TERMINAL. FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST CALIFORNIA...THUNDERSTORMS WILL BE POSSIBLE THROUGH THIS EVENING AND AGAIN WEDNESDAY OVER MAINLY MOHAVE COUNTY AS WELL AS IN THE HIGHER ELEVATIONS OF CLARK, LINCOLN, INYO AND EASTERN SAN BERNARDINO. GUSTY OUTFLOW WINDS FROM THUNDERSTORM ACTIVITY WILL BE POSSIBLE ONCE AGAIN. MAINLY SCT-BKN CLOUDS AOA 15K FEET WITH BASES AS LOW AS 6K- 10K FEET IN AND NEAR ANY SHRA/TSRA. OUTSIDE OF THUNDERSTORM ACTIVITY...WINDS SHOULD FAVOR TYPICAL DIURNAL TRENDS. && .CLIMATE...THE JUNE RECORD OF 18 CONSECUTIVE DAYS WITH A HIGH OF 105 DEGREES OR GREATER WAS TIED TODAY FOR MCCARRAN AIRPORT. IN ADDITION...THE ALL-TIME RECORD STRETCH OF 21 CONSECUTIVE DAYS WITH A HIGH OF 105 DEGREES OR GREATER IS ALSO IN JEOPARDY IN THE COMING DAYS. THIS RECORD STANDS AT 21 DAYS AND HAS BEEN SET FOR TIMES...MOST RECENTLY IN 2000. && .SPOTTER INFORMATION STATEMENT...SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && SHORT TERM/AVIATION...HARRISON LONG TERM.............ADAIR CLIMATE...............STACHELSKI
The San Joaquin Valley radar (KHNX), 156 km away, was scanning. The volume nearest the first event began at 00:15 UTC.
1 flash flood. Local standard time, as filed.
Rocks and mud washed over Death Valley Road in several locations near the intersection of Highway 168.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2015Every state in 2015This day in weather historyWarnings in California, 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: 578168.