A tongue of monsoon moisture pushed into southern Mohave County, generating one severe thunderstorm.
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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.
A tongue of monsoon moisture pushed into southern Mohave County, generating one severe thunderstorm.
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, 8:20 AM MST, 3 hours 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 820 AM PDT TUE AUG 26 2014 .SYNOPSIS...A LOW PRESSURE SYSTEM OVER NORTHERN NEVADA AND MONSOON MOISTURE SEEPING UP FROM THE SOUTH WILL PRODUCE A RISK OF SEVERE WEATHER AND FLASH FLOODING TODAY...MAINLY OVER MOHAVE COUNTY BUT POSSIBLY EXTENDING INTO THE EASTERN PORTIONS OF NEIGHBORING COUNTIES. DRIER AIR WILL MOVE IN BEGINNING TOMORROW...WITH ONLY A SLIGHT CHANCE OF THUNDERSTORMS OVER MOHAVE COUNTY...FOLLOWED BY DRY WEATHER AREAWIDE THURSDAY THROUGH THE WEEKEND. && .UPDATE... QUICK UPDATE THIS MORNING TO INCREASE POPS FROM TWENTYNINE PALMS TO NEEDLES. AREA OF SHOWERS AND A FEW THUNDERSTORMS ARE ONGOING. THE FORCING ASSOCIATED WITH THIS ACTIVITY WILL PUSH INTO MOHAVE COUNTY THIS MORNING AND AFTERNOON. ALREADY STARTING TO SEE SOME BETTER STORM DEVELOPMENT NEAR OATMAN AND MOVING TOWARD KINGMAN. THE CONCERNS TODAY REMAIN STRONG STORMS AND TRAINING OF STORMS ALONG THE HIGHER TERRAIN OF MOHAVE COUNTY. .PREVIOUS DISCUSSION... 252 AM PDT TUE AUG 26 2014 .SHORT TERM...THROUGH THURSDAY NIGHT...STILL CONCERNED ABOUT SEVERE WEATHER AND FLASH FLOODING OVER MOHAVE COUNTY THIS AFTERNOON. PRECIPITABLE WATER SENSORS SHOWED A NICE GRADIENT BETWEEN HIGHER VALUES /AN INCH AND A HALF/ OVER IMPERIAL COUNTY CALIFORNIA AND LOWER VALUES /THREE QUARTERS OF AN INCH/ AT KINGMAN. WATER VAPOR LOOP SHOWED UPPER LOW WAS JUST SOUTH OF RENO EARLY THIS MORNING...AND SOUTH TO SOUTHWEST WINDS AHEAD OF IT WILL PULL DEEPER MOISTURE NORTH OVER MOHAVE COUNTY AND EASTERN PORTIONS OF CLARK...LINCOLN...AND SAN BERNARDINO WHILE ALSO MAINTAINING THE TIGHT MOISTURE GRADIENT JUST TO THE WEST. SOUTHWEST TO WEST WINDS ALOFT WILL PROVIDE VERTICAL WIND SHEAR WHICH WILL FAVOR MORE ORGANIZED THUNDERSTORMS AS OPPOSED TO THE TYPICAL PULSE STORMS WE SEE FOR MOST OF THE SUMMER MONSOON SEASON. FLASH FLOOD WATCH LOOKS GOOD...AND AS NOTED BY PREVIOUS SHIFTS...SEVERE WEATHER IS A CONCERN AS WELL. THE LOW STARTS TO MOVE EAST TOMORROW...PULLING IN DRY AIR BEHIND IT AND LIMITING PRECIP CHANCES TO MOHAVE COUNTY. HIGH PRESSURE BUILDS IN ON THURSDAY FOR DRY WEATHER AREAWIDE. TEMPERATURES WILL BE A BIT BELOW NORMAL TODAY AND WEDNESDAY THEN WARM TO NEAR NORMAL ON THURSDAY. .LONG TERM...FRIDAY THROUGH TUESDAY. HIGH PRESSURE IS FORECAST TO BE PUSHED SOUTH BY THE END OF THE WEEK AS A TROUGH OF LOW PRESSURE MOVES INTO THE WESTERN STATES. THIS WILL BRING SOME SLIGHTLY COOLER TEMPERATURES TO THE REGION...BUT ALSO SOME BREEZY AFTERNOON WINDS BY SUNDAY AND MONDAY. ALTHOUGH TEMPERATURES WILL COOL SLIGHTLY THEY ARE STILL EXPECTED TO REMAIN RIGHT AROUND NORMAL FOR THIS TIME OF YEAR. THIS TROUGH IS EXPECTED TO SLOWLY PUSH EAST WHICH WILL KEEP THE GENERAL WIND FLOW SOUTHWEST TO WEST INTO EARLY NEXT WEEK. WITH THIS TYPE OF PATTERN ANY MONSOONAL MOISTURE WILL HAVE A HARD TIME WORKING NORTH INTO THE CWA. ITS WAY TOO EARLY TO DECLARE AN END TO THE MONSOON...BUT THERE LOOKS TO BE AN EXTENDED BREAK AT LEAST THROUGH THE MIDDLE OF NEXT WEEK. && .AVIATION...FOR MCCARRAN...THUNDERSTORMS WILL BE LIKELY OVER THE PEACH SPRINGS AND MORMON MESA CORRIDORS THIS AFTERNOON AND EVENING...WITH AN OUTSIDE CHANCE OF A STORM NEAR THE TERMINAL AS WELL. EASTERLY OUTFLOW WINDS FROM THUNDERSTORMS TO THE EAST WILL BE POSSIBLE THIS AFTERNOON THROUGH TONIGHT. THERE WILL ONLY BE A SLIGHT CHANCE OF THUNDERSTORMS IN THE PEACH SPRINGS CORRIDOR ON WEDNESDAY THEN DRY WEATHER IS EXPECTED ON THURSDAY. FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST CALIFORNIA...THUNDERSTORMS WILL BE LIKELY OVER MOHAVE COUNTY THIS AFTERNOON AND EVENING AND ALSO POSSIBLE OVER EASTERN PORTIONS OF CLARK...LINCOLN...AND SAN BERNARDINO COUNTIES. SEVERE WEATHER AND VERY HEAVY RAIN WILL BE POSSIBLE. THERE WILL BE ONLY A SLIGHT CHANCE OF THUNDERSTORMS OVER MOHAVE COUNTY WEDNESDAY FOLLOWED BY DRY WEATHER AREAWIDE ON THURSDAY. && .SPOTTER INFORMATION STATEMENT...SPOTTERS SHOULD REPORT HEAVY RAINFALL...FLASH FLOODING...STRONG WINDS...BLOWING DUST...AND HAIL TODAY. THE MAIN AREA IMPACTED WILL BE MOHAVE COUNTY...WITH CHANCES ALSO IN EASTERN CLARK...EASTERN LINCOLN...AND EASTERN SAN BERNARDINO COUNTIES. && UPDATE...PADDOCK PREVIOUS DISCUSSION...MORGAN/GORELOW FOR MORE FORECAST INFORMATION...SEE US ON OUR WEBPAGE: HTTP://WEATHER.GOV/LASVEGAS OR FOLLOW US ON FACEBOOK AND TWITTER
The Las Vegas radar (KESX), 175 km away, was scanning. The volume nearest the first event began at 19:13 UTC.
1 thunderstorm wind. Local standard time, as filed.
A spotter driving on Highway 93 southeast of Wikieup estimated a 65 mph gust from a thunderstorm. He had to pull over and stop because his car was being blown off the road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2014Every state in 2014This day in weather historyWarnings in Arizona, August 2014
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: 538945.