The last remnants of monsoon moisture from the late July push produced isolated flash flooding in eastern California and western Nevada.
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.
The last remnants of monsoon moisture from the late July push produced isolated flash flooding in eastern California and western Nevada.
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 1, 4:52 PM PST, 23 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 552 PM PDT SAT AUG 1 2015 .SYNOPSIS...THUNDERSTORMS WILL SETTLE DOWN AFTER SUNSET...THEN A DRYING TREND IS EXPECTED THROUGH MUCH OF THE UPCOMING WEEK. FEWER STORMS ARE EXPECTED SUNDAY...THEN ANY STORMS ON MONDAY SHOULD BE LIMITED TO NORTHERN INYO AND ESMERALDA COUNTIES. THE DRIER WEATHER WILL HELP TEMPERATURES RISE TO NEAR OR SLIGHTLY ABOVE NORMAL MONDAY AND TUESDAY. && .UPDATE...MESOLOW CONTINUES TO PUSH NORTH THROUGH CLARK COUNTY THIS EVENING. SOME SHOWERS ARE STILL POSSIBLE IN CLARK...LINCOLN AND MOHAVE COUNTIES...BUT HAVE GONE AHEAD AND CANCELLED THE FLASH FLOOD WATCH FOR THOSE AREAS. I UPDATED CLOUDS AND POPS FOR THE SOUTHERN AREAS AS SOME CLEARING HAS ADVANCED FURTHER NORTH. && .PREV DISCUSSION... 248 PM PDT SAT AUG 1 2015 .SHORT TERM...THROUGH SUNDAY NIGHT. THUNDERSTORMS HAVE PROPAGATED NORTH NORTHWEST TODAY...WITH NYE COUNTY BEING THE CENTER OF THE ACTION AS OF 230 PM. STORMS WILL QUIET DOWN AFTER SUNSET AS HEATING IS LOST...BUT PROBABLY WILL NOT DIE OFF COMPLETELY AS MESOLOW/MCV SLOWLY LIFTS NORTHWARD THROUGH THE CWA OVERNIGHT. MODELS CONTINUE TO AGREE ON DESCENDING MOTION BEHIND THIS FEATURE...WHICH SHOULD LIMIT PRECIP CHANCES TO AREAS NORTH OF LAS VEGAS ON SUNDAY. BROADER SOUTHWEST FLOW STARTS TO TAKE OVER SUNDAY NIGHT...BRINGING LOWER HUMIDITY AND PUTTING AN END TO THUNDERSTORM CHANCES. LOW TEMPERATURES TONIGHT WILL BE HIGHLY DEPENDENT ON WHERE RAIN FALLS/FELL TODAY INTO THIS EVENING. HIGHS SUNDAY WILL COME UP QUITE A BIT IN AREAS NEAR AND SOUTH OF LAS VEGAS WHERE IT RAINED TODAY BUT SHOULD BE DRY TOMORROW. .LONG TERM...MONDAY THROUGH SATURDAY. BY MONDAY AFTERNOON, THUNDERSTORMS CHANCES WILL BE MOSTLY CONFINED TO THE SIERRA...WHITE MOUNTAINS AND PORTIONS OF ESMERALDA COUNTY. A SLIGHT CHANCE OF A SHOWER OR STORM EXISTS FOR BISHOP AS WELL. DRY CONDITIONS ARE EXPECTED TUESDAY AND WEDNESDAY AS HIGH PRESSURE BUILDS SOUTH OF THE AREA SETTING UP SOUTHWEST FLOW ACROSS THE CWA BOTH DAYS. THE SAME GOES FOR THURSDAY EXCEPT THE ECMWF SHOWS MORE A SOUTHERLY FLOW AND A WEAK RETURN OF MOISTURE TO MOHAVE COUNTY SO LEFT AN INHERITED LOW END SLIGHT CHANCE OF THUNDERSTORMS THERE FOR THE AFTERNOON/EVENING HOURS. CHANCES ARE SOMEWHAT BETTER FOR PARTS OF THE EASTERN CWA...IN PARTICULAR MOHAVE COUNTY...FOR SOME STORM ACTION ON FRIDAY. HOWEVER THE LATEST MODELS TAKE THE DEEPER MOISTURE PLUME EAST OF MOHAVE COUNTY WITH ONLY THREE QUARTERS TO ONE INCH FORECAST ACROSS MOHAVE COUNTY ITSELF. WILL HAVE TO WATCH AND SEE HOW HIGH PRESSURE EAST OF THE AREA INTERACTS WITH THE OFFSHORE LOW AND HOW QUICKLY THE AIRMASS DRIES OUT AS THE LOW MOVES INLAND. TEMPERATURES THROUGH THE WEEK SHOULD BE AROUND SEASONAL NORMALS BUT COULD COOL OFF LATER IN THE WEEK IF MOISTURE INCREASES. && .AVIATION...FOR MCCARRAN...THUNDERSTORM CHANCES HAVE LIKELY ENDED AT THE TERMINAL...AND IF ANY MORE RAIN FALLS IT SHOULD BE LIGHT. NORTHWEST WINDS WILL BE PRESENT THROUGH APPROXIMATELY 04Z. THEN MORE DIURNALLY DRIVEN WINDS ARE EXPECTED. FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST CALIFORNIA...THUNDERSTORM CHANCES WILL BE GREATEST OVER NYE...ESMERALDA AND THE MOUNTAINS OF INYO COUNTY THIS AFTERNOON AND EVENING. ERRATIC GUSTY WINDS AND MOUNTAIN OBSCURATION CAN BE EXPECTED WITH ANY THUNDERSTORM. STORM CHANCES WILL BE LIMITED TO AREAS NEAR AND NORTH OF LAS VEGAS ON SUNDAY...WITH LESS COVERAGE EXPECTED THAN WHAT HAPPENED TODAY. && .SPOTTER INFORMATION STATEMENT...SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES THROUGH SUNDAY. THE REMAINDER OF THE WEEK LOOKS DRY. && CZYZYK/MORGAN/SALMEN FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE: HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER
The San Joaquin Valley radar (KHNX), 220 km away, was scanning. The volume nearest the first event began at 01:15 UTC.
1 flash flood. Local standard time, as filed.
Highway 264 was washed out in several places. The Dyer co-op observer measured 3.07 inches of rain between 4 PM and 9 PM, which set a 24-hour rainfall record for the station.
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: 592661.