An upper level low helped trigger scattered thunderstorms over the Mojave Desert. One dissipating storm produced high winds.
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The episode as NWS VEF wrote it up.
An upper level low helped trigger scattered thunderstorms over the Mojave Desert. One dissipating storm produced high winds.
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 Sep 24, 1:08 PM PST, 7 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 208 PM PDT SAT SEP 24 2011 .SYNOPSIS...A LOW PRESSURE SYSTEM MOVING THROUGH SOUTHERN CALIFORNIA WILL KEEP A CHANCE OF THUNDERSTORMS OVER MUCH OF THE AREA THROUGH THIS EVENING. A DRY SOUTHWEST FLOW SUNDAY WITH THEN GIVE WAY TO HIGH PRESSURE OVER THE AREA MUCH OF NEXT WEEK. THIS WILL RESULT IN MOSTLY CLEAR SKIES AND NEAR TO SLIGHTLY ABOVE NORMAL TEMPERATURES. && .SHORT TERM...THE UPPER LOW NEAR THE SOUTHERN CALIFORNIA COAST HAS BEEN GENERATING SHOWERS AND THUNDERSTORMS ACROSS MUCH OF SOUTHERN NEVADA AND MOHAVE COUNTY IN ARIZONA AND ACROSS INYO COUNTY IN CALIFORNIA THIS AFTERNOON. ALTHOUGH NOT MUCH WAS GOING ON IN SAN BERNARDINO COUNTY...THE APPROACHING LOW COMBINED WITH AMPLE HEATING SHOULD STILL GET SOME ACTIVITY GOING THERE LATER THIS AFTERNOON AND EVENING. SHOWERS AND THUNDERSTORMS WILL DECREASE OVERNIGHT AS THE INCOMING LOW WEAKENS...THE SURFACE COOLS AND THE AIR MASS STABILIZES. THE LEADING EDGE OF A LARGE PACIFIC LOW WILL WORK INTO THE PACIFIC NORTHWEST LEADING TO A GENERALLY DRY SOUTHWEST FLOW OVER OUR AREA SUNDAY. THE FLOW WILL NOT BE QUITE STRONG ENOUGH TO TOTALLY FLUSH MOISTURE OUT OF NORTHERN MOHAVE COUNTY AND A SLIGHT CHANCE OF THUNDERSTORMS WAS STILL MENTIONED THERE. HIGH PRESSURE WILL BEGIN TO PUSH INTO THE REGION MONDAY...CONTINUING THROUGH TUESDAY. THIS WILL RESULT IN MOSTLY CLEAR SKIES...WARM TEMPERATURES AND FAIRLY LIGHT WINDS. .LONG TERM...HIGH PRESSURE OVER THE REGION WILL ALLOW FOR TEMPERATURES TO REMAIN SEVERAL DEGREES ABOVE NORMAL ALONG WITH CLEAR SKIES AND RELATIVELY LIGHT WINDS. A TROUGH APPROACHING THE PACIFIC NORTHWEST LATE IN THE WEEK WILL HELP FLATTEN THE RIDGE AND BRING LOWERING HEIGHTS RESULTING IN TEMPERATURES DROPPING TO AROUND NORMAL. STILL NEED TO WATCH HILARY AS THE MODELS CONTINUE TO SHOW IT BEING PULLED BACK TOWARD THE NORTHEAST AND EVENTUALLY MERGE WITH ANOTHER WEAK TROUGH AND FORM A CUTOFF LOW OFF THE SOUTHERN CALIFORNIA COAST. THE MODELS CONTINUE TO NOT HAVE A GREAT HANDLE ON THIS FEATURE AND WILL CONTINUE TO KEEP THE FORECAST DRY THROUGH THE EXTENDED PERIOD. && .AVIATION...FOR MCCARRAN...SCT CLOUDS 12K FEET ALONG WITH ISOLATED THUNDERSTORMS WILL BE POSSIBLE FOR THE REMAINDER OF THE AFTERNOON. DO NOT THINK THUNDERSTORMS OR STRONG GUSTY WINDS WILL BE WIDESPREAD ENOUGH TO INCLUDE IN THE TAF...BUT THUNDERSTORMS IN ALL APPROACH CORRIDORS WILL BE POSSIBLE INTO THIS EVENING. FEW-SCT CLOUDS AROUND 12-14K FEET OVERNIGHT WITH THUNDERSTORMS REMAINING NORTH OF THE AREA ON SUNDAY. FOR THE REST OF SOUTHERN NEVADA...NORTHWEST ARIZONA...AND SOUTHEAST CALIFORNIA...SCATTERED THUNDERSTORMS OVER MUCH OF THE AREA INTO THIS EVENING WITH GUSTY WINDS UP TO 45 MPH POSSIBLE WITH ANY STORM. STORMS WILL DIMINISH THIS EVENING AND OVERNIGHT WITH ONLY ISOLATED THUNDERSTORMS POSSIBLE SUNDAY OVER MAINLY NORTHERN MOHAVE COUNTY. WINDS TONIGHT WILL BE UNDER 10KTS AND THAT SHOULD CONTINUE THROUGH SUNDAY. && .VEF WATCHES/WARNINGS/ADVISORIES... NV...NONE. AZ...NONE. CA...NONE. && HARRISON/GORELOW HTTP://WEATHER.GOV/LASVEGAS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAS VEGAS NV 649 AM PDT SAT SEP 24 2011 AZZ001>003-036-CAZ519>527-NVZ014>022-250500- 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- ESMERALDA AND CENTRAL NYE COUNTY-LINCOLN COUNTY- NORTHEAST CLARK COUNTY-WESTERN CLARK AND SOUTHERN NYE COUNTY- SHEEP RANGE-SPRING MOUNTAINS-LAS VEGAS VALLEY- SOUTHERN CLARK COUNTY- 649 AM PDT SAT SEP 24 2011 /649 AM MST SAT SEP 24 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST ARIZONA...CALIFORNIA AND SOUTHERN NEVADA. .DAY ONE...TODAY AND TONIGHT A SLIGHT CHANCE OF THUNDERSTORMS ARE FORECAST ACROSS MUCH OF THE AREA TODAY. THE MAIN IMPACT WITH THESE STORMS WILL BE THE POTENTIAL FOR GUSTY WINDS TO NEAR 50 MPH. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The Las Vegas radar (KESX), 162 km away, was scanning. The volume nearest the first event began at 21:16 UTC.
1 thunderstorm wind. Local standard time, as filed.
Three stations measured gusts of 58 to 61 mph from a dissipating thunderstorm.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2011Every state in 2011This day in weather historyWarnings in Nevada, September 2011
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: 336661.