An approaching cold front brought gusty winds to much of the Mojave Desert. Isolated high winds occurred.
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The episode as NWS VEF wrote it up.
An approaching cold front brought gusty winds to much of the Mojave Desert. Isolated high winds occurred.
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 Apr 25, 7:30 AM PST, 4 hours 57 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 830 AM PDT Sun Apr 25 2021 .SYNOPSIS...Widespread windy and dusty conditions are expected through today ahead of a weather system that will bring a chance for shower activity to most of the region early in the workweek. Much cooler temperatures will accompany the changing weather conditions Monday and Tuesday before high pressure builds across the area Wednesday onward with temperatures climbing above normal. && .UPDATE...Windy day in store for much of the region today ahead of a potent spring trough which will swing through the region tonight through Tuesday. Winds this morning have already been gusting 30-40 mph from the western Mojave Desert into southern Nevada, with gusts of 40-50 already across the Nevada Test site and near Red Rock Canyon. Winds will strengthen further today, and may flirt with high wind criteria at times downslope of terrain features, particularly the Spring Mountains and southern Owens Valley. Otherwise, the forecast remains on track and no updates are needed this morning. -Outler- .SHORT TERM...through Sunday night. A deepening low over northern CA will bring another day of widespread gusty winds to the region. Winds have diminished somewhat overnight, but will increase by late morning and especially in the afternoon as surface pressure gradients tighten. Most areas will see wind gusts between 40-50 mph, but there will be a few locations that will see localized gusts topping 55-60 mph. These include the eastern slopes of the Spring Mountains from Red Rock to Desert Rock where strong downslope may develop late this afternoon. Another area where winds could see these higher gusts will be along Highway 395 south of Lone Pine where that area is susceptible to downslope winds off the Sierra. Winds should start to diminish fairly quickly after sunset, but still remain gusty at times through midnight. Winds Monday will be lighter across the area, but still expected to be breezy at times. By late Sunday afternoon, precipitation is expected to spread into the Sierra and eventually spill into the northern Owens Valley Sunday evening. Most of the precipitation will be intercepted by the Sierra with just a few hundredths expected in Bishop. Places higher in the Sierra could see a little snow with Aspendell potentially seeing 2-4 inches of snow by Monday morning. Precipitation will then spread east overnight and Monday with scattered showers possible over much of the region. It still looks like amounts will remain fairly light over much of the area with totals generally less than a tenth of an inch. Higher amounts, up to a quarter inch, are possible across Esmeralda, central Nye, Lincoln, and northern Mohave Counties, along with the Spring Mountains. Temperatures will be drastically cooler Monday with highs dropping about 15-20 degrees from today's highs. LONG TERM...Tuesday through Saturday The eastward exit of the low pressure system over the Southwest US will give way to a strong upper level ridge setting up over the Western U.S. from Tuesday through the end of the period. Latest ensemble model guidance shows some interesting things with regard to this ridge. Both the European and GFS Ensemble Systems show very few differences in the strength and positioning of the ridge. Further investigation of the Principle Component Clustering analysis show incredibly small variance in ensemble members. What little variance exists center mainly on the ECMWF and Canadian solutions indicating a more knocked down ridge than the GFS due to passing short waves over the northern periphery of said ridge. This has almost little to no appreciable effect on sensible weather for our area. What does all this technical stuff mean? Well, it leads to a very high confidence forecast in temperatures and other weather elements due to the very low spread in forecasted values for the coming week. The most notable part of the forecast is Friday and Saturday when the area is likely to make a run at 100 degree temperatures. Death Valley and portions Colorado River Valley are likely to see some 100s for the first time since earlier in the month. Vegas and the rest of Clark and Mohave Counties are another matter. While 100 degree temperatures in these areas are not completely out of the question, it is more likely at this point that we end up just shy of the century mark. For those that are wondering, in Las Vegas the earliest recorded 100 degree temperature was May 1st, in 1947. If in the unlikely chance we did hit 100 later in the week, it would set an all-time earliest 100 record. Might be something fun to watch later this week. && .FIRE WEATHER...Red Flag warning remains in effect into this evening evening for much of southern Nevada and northwest Arizona. Relative humidity values will tick upward a tad today but winds will be stronger. Improving conditions come tonight with increasing humidity and chances for light rainfall spreading across the region Monday and Tuesday. Much cooler temperatures will also be felt Monday and Tuesday. && .AVIATION...For McCarran...An approaching Pacific System will keep south winds gusting 20-25 kts early this morning then gusts around 35 knots will redevelop late this morning through the afternoon. Haze and patchy blowing dust will be possible this afternoon, but are not expected to reduce visibility below 6 SM. Gusts will decrease somewhat this evening but will likely reach 25- 30 knots at times overnight. BKN-OVC clouds above 20 kft today will be followed by SCT-BKN clouds lowering to 6-10 kft AGL early Monday morning as the system moves into southern Nevada. For the rest of southern Nevada, northwest Arizona and southeast California...An approaching Pacific System will produce widespread gusty south-southwest winds 35-45 knots across the region today. The belt of strong winds will encompass a large area stretching from the Mojave Desert across the southern Great Basin. Haze and patchy blowing dust possible each afternoon, but not expected to reduce visibility below 6 SM at TAF sites. Precipitation will spread into the southern Sierra this afternoon and evening then scattered to numerous showers will develop over south central Nevada late tonight with clouds bases lowering to 8-12 kft feet MSL leading to areas of mountain obscuration. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && SHORT TERM...Gorelow LONG TERM...Lericos AVIATION...Adair 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.
These winds occurred at the Mercury-Desert Rock (KDRA) ASOS.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2021Every state in 2021This day in weather historyWarnings in Nevada, April 2021
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: 952107.