Lingering monsoon moisture fueled a few thunderstorms in Lincoln County. One storm produced flash flooding.
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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.
Lingering monsoon moisture fueled a few thunderstorms in Lincoln County. One storm produced flash flooding.
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 1, 12:29 PM PST, 21 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 129 PM PDT Wed Sep 1 2021 .SYNOPSIS...Deep moisture will exit to the east tonight, with dry weather expected for most areas Thursday through Saturday. A low- grade push of moisture could bring isolated thunderstorms Sunday through early next week. Temperatures will rise a few degrees above normal this weekend into early next week. && .SHORT TERM...through Friday night. Early afternoon satellite loop showed the upper low center which was west of Baja yesterday over southern Mohave County today and moving east. Thunderstorms were developing near the center, and also a few storms were popping over eastern Lincoln and far northeast Mohave counties. Overall, things have underachieved in the Flash Flood Watch area today. High resolution models suggest at least some potential for locally heavy rain through about 3 PM, so will monitor trends until then, and may be able to cancel the Watch early if things go as expected. Once the low moves away tonight, mainly dry weather is expected Thursday and Friday, although a few storms could develop near the eastern border of Mohave County Thursday afternoon. High pressure over the Lower Mississippi River Valley will expand westward, leading to rising heights over our area, and a few degrees of warming through Friday. .LONG TERM...Saturday through Wednesday. Both the GFS and ECMWF ensembles show a broad area of high pressure extending from southern Nevada back towards New Mexico remaining in place through the weekend maintaining dry conditions across the region. As the high becomes more centered over Southern Nevada/ Arizona late Sunday and early next week, temperatures will warm to a few degrees above normal. By mid-week, the center of the high should retrograde back east towards the four corners region. This will cause upper levels winds to turn more southeasterly and allow a modest increase in moisture levels. The latest model runs have backed off some on the moisture return and precipitation now looks to be more isolated than in previous runs, with Mohave and southeastern San Bernardino counties seeing the best chances of thunderstorms. && .AVIATION...For McCarran...Light east/southeastern winds are expected through 00Z when the winds will pick up and gust between 15- 20 kts from the southeast. Mid- and upper-level clouds are expected to clear out by 00Z and will not have any impacts on surface visibility while in the area. Gusty southeast winds will continue through 06Z when they will shift more towards the south/southwest and die down before becoming light and variable around 13Z. Winds are expected to pick back up again from the southwest tomorrow around 20Z. .For the rest of southern Nevada, northwest Arizona and southeast California...Clouds in the KHND and KVGT area are expected to clear out by 00Z with southerly wind gusts around 18 kts possible at KHND between 23Z and 06Z. For KDAG, westerly winds are expected for the duration of the 18Z TAF period with gusts around 20 kts between 22Z and 08Z. For KIFP and KEED, clouds should clear out of the area by 04Z. For KBIH, diurnal winds are expected to persist through 11Z before becoming light and variable. South wind gusts of 15-20 kts are possible at KBIH between 00Z and 03Z. Upper-level smoke from wildfires will begin to creep into the KBIH area towards the end of the TAF period, but no impacts to surface visibility are expected. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && SHORT TERM...Morgan LONG TERM...Planz AVIATION...Stessman For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
The Cedar City radar (KICX), 145 km away, was scanning. The volume nearest the first event began at 20:48 UTC.
1 flash flood. Local standard time, as filed.
Six inches of water flowed over Main Street in Pioche.
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, September 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: 984938.