Monsoon moisture continued to produce thunderstorms over the Mojave Desert. One storm caused flash flooding in a remote area.
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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.
Monsoon moisture continued to produce thunderstorms over the Mojave Desert. One storm caused flash flooding in a remote area.
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 16, 8:55 PM MST, 3 hours 29 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 855 PM PDT SAT AUG 16 2008 .SYNOPSIS...AFTERNOON AND EVENING THUNDERSTORMS WILL DECREASE IN COVERAGE SUNDAY AND MONDAY AS DRIER AIR MOVES IN FROM THE WEST...WITH DRY WEATHER EXPECTED BEGINNING TUESDAY. AN UNSEASONABLY STRONG TROUGH OF LOW PRESSURE WILL MOVE INTO THE WEST COAST IN THE MIDDLE OF THE WEEK...BRINGING A RISK OF INCREASING SOUTHWEST WINDS WHICH WOULD RAISE FIRE WEATHER CONCERNS. && .UPDATE...BUSY EVENING SO FAR WITH LITTLE CHANCE TO LOOK AT THE LATEST 00Z NAM RUN. LINE OF THUNDERSTORMS CONTINUES TO SHIFT ACROSS THE SOUTHEAST PORTION OF THE CWA WITH EAST CENTRAL CLARK TO NORTHERN MOHAVE COUNTY BEING THE MOST ACTIVE...WITH A SECONDARY AREA IN SOUTHEAST LINCOLN COUNTY. THUNDERSTORMS SLOWLY DECREASING BUT OUTFLOW BOUNDARIES AND POSSIBLE MERGING CELLS WILL KEEP THE EVENING ACTIVE. WILL LIKELY UPDATE ZONES LATER TO REMOVE EVENING WORDING AND TO BETTER DEPICT TONIGHTS SKY COVER...ESPECIALLY WESTERN ZONES... OTHERWISE NO FURTHER UPDATES PLANNED ATTM. && .AVIATION...FOR MCCARRAN...SCATTERED THUNDERSTORMS TO THE EAST OF KLAS WITH MORMON MESA AND PEACH SPRINGS CORRIDORS CONTINUE TO BE AFFECTED THROUGH 06 AND THEN BECOMING ISOLATED THROUGH 12Z. OUTFLOW BOUNDARY WENT THROUGH KLSV AROUND 03Z...BUT NOT EXPECTED TO REACH THE SOUTHERN PORTION OF THE VALLEY SO WINDS TO REMAIN SOUTHWEST LESS THAN 10KTS OVERNIGHT. TOMORROW...AGAIN...THE MAIN CONCERN WILL EAST OF MCCARRAN...WITH AT LEAST ISOLATED COVERAGE EXPECTED ALONG THE MORMON MESA AND PEACH SPRING CORRIDORS. FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA AND SOUTHERN SAN BERNARDINO COUNTY...THUNDERSTORMS ARE EXPECTED THE REMAINDER OF THE EVENING MAINLY EAST OF THE LAS VEGAS VALLEY...WITH OUTFLOW BOUNDARIES FROM SURROUNDING THUNDERSTORMS BRINGING GUSTY WINDS AT TIMES. ACTIVITY WILL DIMINISH OVERNIGHT. THE OUTLOOK FOR SUNDAY IS FOR A CONTINUED TSTM THREAT ACROSS NW ARIZONA...WITH ISOLATED CHANCES ELSEWHERE. && .PREV DISCUSSION...316 PM PDT SHORT TERM...BUSY WITH THUNDERSTORM CONCERNS THIS AFTERNOON SO WILL BE BRIEF. GRADUAL DRYING TREND THROUGH MONDAY STILL LOOKS GOOD AS WEAK SOUTHWEST FLOW ALOFT BEGINS TO INVADE THE AREA. NOT TOO MUCH CHANGE TO PREVIOUS FORECAST...WHICH DEPICTED AFTERNOON AND EVENING THUNDERSTORM CHANCES SLOWLY DIMINISHING FROM WEST TO EAST SUNDAY AND MONDAY. LITTLE TEMPERATURE CHANGE EXPECTED THROUGH MONDAY. .LONG TERM...FOR THE PERIOD BEGINNING TUESDAY MORNING...HIGH PRESSURE PREVIOUSLY CENTERED OVER THE FORECAST AREA WILL BE SUPPRESSED TO THE SOUTH BY TUESDAY AS AN UNUSUALLY POTENT LOW PRESSURE SYSTEM IMPACTS THE PAC NW. WITH THE LOW TO OUR NORTH AND RIDGE AXIS TO OUR SOUTH...HEIGHTS WILL DECREASE AND DRY SOUTHWEST FLOW WILL PERSIST...BRINING LITTLE SIGNIFICANT WEATHER AND TEMPS BACK TO OR LOWER THAN CLIMO NORMS. BREEZY CONDITIONS REMAIN A POSSIBILITY AT SOME POINT DURING THE SECOND HALF OF NEXT WEEK...BUT RIGHT NOW...WIND SPEEDS ALOFT DEPICTED BY MODELS DO NOT LOOK VERY IMPRESSIVE. OVERALL..LITTLE CHANGE WAS NEEDED THIS AFTERNOON TO THE EXISTING FORECAST. && .FIRE WEATHER...AN UNSEASONABLY STRONG TROUGH APPROACHING FROM THE PACIFIC IN THE MIDDLE OF THE WEEK COULD BRING INCREASING SOUTHWEST WINDS AND HIGHER FIRE WEATHER CONCERNS. && .VEF WATCHES/WARNINGS/ADVISORIES... NV...NONE. AZ...NONE. CA...NONE. && JENSEN/MORGAN/KENNEDY HTTP://WEATHER.GOV/LASVEGAS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAS VEGAS NV 441 AM PDT SAT AUG 16 2008 AZZ001>003-036-CAZ519>527-NVZ016>022-170700- NORTHWEST PLATEAU-LOWER COLORADO RIVER VALLEY-NORTHWEST DESERTS- LAKE MEAD NATIONAL RECREATION AREA-EASTERN SIERRA SLOPES- OWENS VALLEY-WHITE MOUNTAINS OF INYO COUNTY- DEATH VALLEY NATIONAL PARK-WESTERN MOJAVE DESERT- EASTERN MOJAVE DESERT-MORONGO BASIN-CADIZ BASIN- SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY- NORTHEAST CLARK COUNTY-WESTERN CLARK AND SOUTHERN NYE COUNTY- SHEEP RANGE-SPRING MOUNTAINS-LAS VEGAS VALLEY- SOUTHERN CLARK COUNTY- 441 AM PDT SAT AUG 16 2008 /441 AM MST SAT AUG 16 2008/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST ARIZONA...CALIFORNIA AND SOUTHERN NEVADA. .DAY ONE...TODAY AND TONIGHT THE THREAT FOR HAZARDOUS WEATHER IS LOW. ISOLATED THUNDERSTORMS ARE POSSIBLE TODAY AND THIS EVENING OVER MAINLY THE HIGHER TERRAIN OF CLARK...MOHAVE AND SAN BERNARDINO COUNTIES. A FEW STORMS COULD PRODUCE LOCALLY HEAVY RAIN. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ISOLATED THUNDERSTORMS ARE POSSIBLE SUNDAY AND MONDAY OVER MAINLY THE HIGHER TERRAIN OF EASTERN CLARK...MOHAVE AND EASTER SAN BERNARDINO COUNTIES. AN AREA OF LOW PRESSURE WILL USHER IN DRIER AIR TUESDAY THROUGH FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The Las Vegas radar (KESX), 82 km away, was scanning. The volume nearest the first event began at 07:23 UTC.
1 flash flood. Local standard time, as filed.
Diamond Bar Road was closed due to flooding shortly after midnight. One lane reopened at 830 AM.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2008Every state in 2008This day in weather historyWarnings in Arizona, August 2008
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: 115038.