Yet another push of monsoon moisture brought another round of thunderstorms to the Mojave Desert and southern Great Basin. A few storms produced flash flooding.
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 VEF wrote it up.
Yet another push of monsoon moisture brought another round of thunderstorms to the Mojave Desert and southern Great Basin. A few storms produced flash flooding.
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 Aug 26, 9:56 AM PST, 3 hours 34 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 1056 AM PDT WED AUG 26 2015 .SYNOPSIS...THERE WILL BE ENOUGH MOISTURE REMAINING OVER THE AREA TODAY FOR ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS AFFECTING MAINLY MOHAVE...CLARK...LINCOLN AND EASTERN SAN BERNARDINO COUNTIES. THUNDERSTORM CHANCES WILL DECREASE THURSDAY WITH ADDITIONAL DRYING EXPECTED FRIDAY THROUGH THE WEEKEND AS A INCREASING SOUTHWEST FLOW SETS UP OVER THE AREA. && .UPDATE...A FEW SHOWERS AND AN ISOLATED THUNDERSTORM DEVELOPED OVER ESMERALDA COUNTY. SO...WENT AHEAD AND ADDED SLIGHT/CHANCE POPS TO THE COUNTY. -SALMEN- && .PREV UPDATE...951 AM PDT...MONSOON MOISTURE INCREASED FAIRLY SIGNIFICANTLY FROM 24 HRS AGO WITH PWAT VALUES OF .84 INCHES OFF THE LAS VEGAS SOUNDING TUESDAY MORNING TO 1.55 INCHES THIS MORNING. EXTENSIVE CLOUD COVER ACROSS MUCH OF THE AREA THIS MORNING BUT HAS BEGUN TO ERODE SOMEWHAT OVER THE NORTHWEST CWA. LIGHT SHOWERS WERE NOTED ON RADAR OVER PORTIONS OF EASTERN SAN BERNARDINO COUNTY AND THE SOUTHERN PORTIONS OF CLARK COUNTY. AT 945 AM...LIGHT SHOWERS WERE NOTED IN THE SOUTHERN PORTIONS OF THE LAS VEGAS VALLEY. EXPECT SPRINKLES TO LIGHT RAINFALL AMOUNTS OUT OF THESE SHOWERS AS THEY MAKE THEIR WAY SLOWLY NORTH THROUGH CLARK COUNTY INTO LINCOLN COUNTY. UPDATE IS OUT WITH THE MAIN CHANGE EXPANDING SLIGHT CHANCE POPS A BIT FURTHER WEST WHERE MODELS FORECAST WEAK INSTABILITY. - SALMEN && .PREVIOUS DISCUSSION...245 AM PDT... .SHORT TERM...TODAY THROUGH FRIDAY NIGHT...A FEW AREAS OF SHOWERS REMAIN THIS MORNING OVER PORTIONS OF NORTHERN MOHAVE...WESTERN CLARK AND EASTERN SAN BERNARDINO COUNTY WHICH ARE BEING AIDED BY A COUPLE OF DISTURBANCES MOVING THROUGH THE REGION. THESE ARE EXPECTED TO LAST THROUGH MUCH OF THE MORNING...BUT ONLY PRODUCING SOME LIGHT SHOWERS. IT LOOKS LIKE WE WILL SEE MORE SHOWERS AND THUNDERSTORMS DEVELOP THIS AFTERNOON OVER MAINLY THE EASTERN HALF OF THE AREA AS FAIRLY DEEP MOISTURE REMAINS IN PLACE. ALTHOUGH THE MAIN DISTURBANCE WILL LIFT NORTH THE MODELS ARE INDICATING ANOTHER WEAK DISTURBANCE PUSHING NORTH THROUGH MOHAVE COUNTY DURING THE AFTERNOON. THIS SHOULD HELP AID IN THE DEVELOPMENT OF AFTERNOON SHOWERS AND THUNDERSTORMS...ESPECIALLY IF WE SEE MORE SUN THEN WE DID YESTERDAY. BY THURSDAY MOISTURE AND INSTABILITY WILL REMAIN OVER THE EASTERN HALF OF THE AREA...BUT WITH THE LACK OF ANY SIGNIFICANT DISTURBANCE THUNDERSTORMS THAT DO DEVELOP WILL GENERALLY BE TERRAIN DRIVEN AND WINDS THROUGH ABOUT 500MB ARE EXPECTED TO BE FAIRLY LIGHT SO MOST WILL REMAIN ANCHORED TO THE HIGHER TERRAIN. DRIER CONDITIONS WILL RETURN FRIDAY AS A SOUTHWEST FLOW STARTS TO INCREASE. THIS WILL LEAVE ONLY THE FAR EASTERN PORTIONS OF THE FORECAST AREA SEEING THE BEST CHANCE OF AFTERNOON THUNDERSTORMS. TEMPERATURES WILL RUN CLOSE TO NORMAL WEDNESDAY AND THURSDAY...BUT WITH BETTER MIXING FRIDAY READINGS ARE EXPECTED TO JUMP A FEW DEGREES. .LONG TERM...SATURDAY THROUGH WEDNESDAY. DRY SOUTHWEST FLOW WILL BE IN THE PROCESS OF SCOURING MOISTURE OUT OF THE AREA FROM WEST TO EAST SATURDAY...AS A SHORTWAVE ASSOCIATED WITH AN UPPER LEVEL LOW OFF OF THE PACIFIC NORTHWEST COAST SWEEPS ACROSS THE NORTHERN GREAT BASIN. THIS WILL INTRODUCE DRIER...COOLER AND PERIODICALLY BREEZY CONDITIONS ACROSS THE REGION. SUNDAY THROUGH MONDAY...OPERATIONAL MODEL GUIDANCE IS IN GOOD AGREEMENT IN BRINGING A SECOND SHORTWAVE ACROSS THE GREAT BASIN...INCREASING SOUTHWESTERLY WINDS AND FURTHER COOLING TEMPERATURES DOWN TO SEASONAL NORMALS THROUGH THE END OF THE PERIOD. THOUGH MODELS CONTINUE TO SHOW A QUIET EXTENDED PERIOD IN TERMS OF WEATHER...BOTH THE LATEST GFS AND ECMWF DO HINT AT SOME MOISTURE RETURN OVER AT LEAST MOHAVE COUNTY ON TUESDAY AND WEDNESDAY AHEAD OF A THIRD...BROAD SHORTWAVE THAT IS PROGGED TO BE APPROACHING THE REGION. THIS WILL BE WORTH KEEPING AN EYE ON AS THE DETAILS BECOME CLEARER IN THE COMING DAYS. && .AVIATION...FOR MCCARRAN...A FEW MAINLY LIGHT SHOWERS WILL HANG AROUND PORTIONS OF CLARK COUNTY THIS MORNING WITH THE BEST CONCENTRATION OVER NORTHERN MOHAVE COUNTY AFFECTING THE MORMON MESA APPROACH CORRIDOR. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AFFECTING AREAS MAINLY EAST OF LAS VEGAS...BUT SEEING A THUNDERSTORM AT THE TERMINAL CAN NOT BE RULED OUT. CLOUDS SCT- BKN120 THROUGH MUCH OF THE DAY...BUT MAY LOWER TO AROUND 8K THIS AFTERNOON NEAR ANY STORMS. EAST WINDS 5-7KTS THIS MORNING WILL TRANSITION TO SOUTHEAST 7-9KTS THIS AFTERNOON. FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST CALIFORNIA...FEW LIGHT TO MODERATE SHOWERS THIS MORNING OVER MOHAVE...CLARK AND EASTERN SAN BERNARDINO COUNTIES WITH CIGS AROUND 10-12K FEET. ADDITIONAL SHOWERS AND THUNDERSTORMS ARE EXPECTED THIS AFTERNOON OVER THE EASTERN HALF OF THE AREA WITH CLOUDS AROUND 8-10K FEET. WINDS WILL GENERALLY BE EAST TO SOUTHEAST 7-10KTS THROUGH MUCH OF THE DAY. && .SPOTTER INFORMATION STATEMENT...SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && SHORT TERM/AVIATION...GORELOW LONG TERM...PULLIN FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE: HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1211 PM PDT WED AUG 26 2015
...TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
...DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0300 PM DUST STORM 14 NW DOLAN SPRINGS 35.70N 114.48W
08/25/2015 MOHAVE AZ PUBLIC
SEVERAL REPORTS/PHOTOS ON SOCIAL MEDIA OF
DUST STORM NEAR DOLAN SPRINGS AND US 93
BETWEEN CHLORIDE AND WHITE HILLS FROM 3-4 PM
MST.
&&
CMSThe Cedar City radar (KICX), 138 km away, was scanning. The volume nearest the first event began at 21:30 UTC.
2 flash flood. Local standard time, as filed.
Water was rushing across Echo Dam Road.
Highway 317 was flooded near the train bridge just south of Highway 93.
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, August 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: 594701, 594702.