An unseasonably deep Pacific low pressure system brought isolated high winds to south central Nevada.
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The episode as NWS VEF wrote it up.
An unseasonably deep Pacific low pressure system brought isolated high winds to south central 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 22, 8:16 AM PST, 3 hours 14 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 916 AM PDT Thu Aug 22 2024 .SYNOPSIS...Thunderstorms will continue across northwest Arizona and nearby portions of southern Nevada before a strong trough moves over the western states and dries out the region on Friday. This trough will also help to cool temperatures to below-average readings by this weekend. Meanwhile, gusty afternoon southwest winds will occur through Friday, increasing the danger of fires across the southern Great Basin. Temperatures will rebound to above-normal levels by early next week. && .UPDATE...Thunderstorm activity over the Arizona Strip will diminish mid-morning today. After a short break, the deep moisture in place across Mohave County will allow for regeneration of thunderstorms during the late morning/early afternoon hours. The greatest concern for hazardous weather remains across the Arizona Strip where there is a Flash Flood Watch remains in place. && .PREV DISCUSSION...213 AM PDT Thu Aug 22 2024 .SHORT TERM...Today through Friday. Nocturnal thunderstorms developing along a very tight moisture gradient near the border of southern Nevada and northwest Arizona are a sign of an active day of convection in store as heating combines with broad ascent associated with the upper-level jet oriented over southern Nevada and southwest Utah. The moisture gradient was evident in the surface dew point observations in the Las Vegas with readings in the lower 20s on the west side of the Valley and in the upper 50s on the east side around 1 AM this morning. The SPC Mesoanalysis page shows a tongue of precipitable water values of 1.25-1.50 inches over Mohave County and the 1.25 contour straddling the Clark/Mohave border. Isolated thunderstorms will be possible through the day near this moisture gradient, but the most numerous storms will be over northern Mohave County, especially from Littlefield to Colorado City and Pipe Spring, where the Flash Flood Watch remains in effect until 11 PM this evening. Dry southwest flow will eventually spread over northwest Arizona late tonight and Friday and scour out the moisture and reduce the potential for thunderstorms. Gusty south-southwest winds today will mainly lead to increasing critical fire weather conditions across most of southern Nevada which is covered by the Red Flag Warning going into effect at 10 AM and persisting through Friday evening. Winds will likely be a little stronger Friday with better potential for widespread gusts over 40 mph across southern/central Nye and Lincoln counties. Temperatures will continue their downward trend with highs lowering a few degrees each day and likely staying under 100 degrees in Las Vegas by Friday. .LONG TERM...Saturday through next Thursday. The axis of the deep trough moving over the western states is forecast to be centered over northwest Nevada Saturday afternoon then it slowly lift over Idaho and the Northern Intermountain Region Sunday. This will keep gusts of 20-30 mph over over southern Nevada and northwest Arizona on Saturday followed by generally light winds Sunday with high temperatures several degrees below normal which translates to the mid 90s for Las Vegas. The will be followed by weak zonal flow then a broad area of high pressure over the Desert Southwest through much of next week. Temperatures will gradually rebound to around 105 in Las Vegas early next week. There is no clear signal for a return of monsoonal moisture though some could sneak back into Mohave County by the middle of next week. && .LONG TERM...Saturday through next Thursday. The axis of the deep trough moving over the western states is forecast to be centered over northwest Nevada Saturday afternoon then it slowly lift over Idaho and the Northern Intermountain Region Sunday. This will keep gusts of 20-30 mph over over southern Nevada and northwest Arizona on Saturday followed by generally light winds Sunday with high temperatures several degrees below normal which translates to the mid 90s for Las Vegas. The will be followed by weak zonal flow then a broad area of high pressure over the Desert Southwest through much of next week. Temperatures will gradually rebound to around 105 in Las Vegas early next week. There is no clear signal for a return of monsoonal moisture though some could sneak back into Mohave County by the middle of next week. && .AVIATION...For Harry Reid...South winds will continue through the early morning, though direction may vary from 200 degrees to 160 degrees. Increasing south-southwest winds are expected after 18Z. Wind speeds over 10KT and gusts over 20KT likely (90%+ chance). Winds will be slightly stronger than yesterday and there is a 50% chance for gusts over 25KT. Winds will diminish after sunset with gusts ending however wind speeds will remain around 10KT through much of the night into Friday morning. Expecting similar but slightly stronger wind patterns Friday with south-southwest winds picking up mid-morning and gusting to 20KT in the morning before increasing to gusts 25-30KT Friday afternoon. There is an increasing chance for isolated thunderstorms to develop in the valley this afternoon. While the risk for thunderstorm impacts at the terminals is low (about 30% probability), hit and miss convection will be around the area from 20Z through 03Z. Any thunderstorms today could produce heavy rain, lightning, sudden gusty winds, and CIGs below 10kft. Convection will diminish after sunset and convection Friday will be more limited and focused further east than today. For the rest of southern Nevada, northwest Arizona and southeast California...Similar to the last few days- gusty south to southwest winds will develop late this morning and early afternoon across the region. Winds will be a bit stronger today with widespread gusts 20- 30KT expected. KBIH will favor the southeast with gusts gust over 25KT likely (70%+ chance). KDAG will see gusty southwest winds developing after 22Z. Winds will diminish after sunset with typical diurnal wind trends expected in most locations. Isolated to scattered thunderstorms are expected through eastern portions of Clark and Lincoln counties into western Arizona. Ongoing isolated convection will increase in coverage after 20Z this afternoon with the highest coverage and risk for thunderstorm impacts expected in northwest Arizona into southwest Utah. Storms today could produce heavy rain, sudden gusty winds, lightning, and CIGs to 8000ft. COnvection will wane after sunset tonight. Clear skies are expected at KBIH and KDAG, while sites farther east will see SCT-BKN clouds around 10-15kft, especially with any convection that develops. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && DISCUSSION...Adair AVIATION...Nickerson For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
This gust occurred 40 miles E of Beatty.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2024Every state in 2024This day in weather historyWarnings in Nevada, August 2024
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: 1207879.