Moist southeast flow fueled thunderstorms over southeast California. Several storms produced flash flooding, and a few produced severe weather.
Every event with a place to put it. Tap one for its entry below.
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.
Moist southeast flow fueled thunderstorms over southeast California. Several storms produced flash flooding, and a few produced severe weather.
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 8, 11:15 AM PST, 1 hour 40 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 1215 PM PDT Mon Aug 8 2022 .SYNOPSIS...With moisture in place, monsoon activity is forecast to ramp up through the week. Scattered thunderstorms will be possible today, with increasing coverage tomorrow through Thursday. Flash flooding will be the primary concern with these storms. Cooler temperatures are expected throughout the week. && .SHORT TERM...Today and Tuesday. An uptick in convection is expected on Tuesday compared to the past few days as moisture increases across the region. Also watching the potential for an MCV to form and move into the area late tonight/Tuesday morning, which would provide not just additional moisture but a forcing mechanism as well. Hi-res models and HREF probabilities for over 40dbz reflectivities all show at least scattered thunderstorms Tuesday afternoon in northern Inyo County, southern Nevada, eastern San Bernardino, and Mohave County...with lesser convection in much of southern Inyo County into west-central San Bernardino County. PWATs of 1 inch or greater will be in place across the region per ensemble probabilities, with heavy rain and flash flooding possible with any storms. HREF PMMs for 3hr QPF for 1 inch highlights Clark and Mohave Counties, as well as portions of eastern San Bernardino County, which is also where the axis of highest instability should set up Tuesday afternoon. This is also the area highlighted by a slight risk in the day 2 excessive rainfall outlook, which is reasonable given the environment and overall set up. There is also a signal for heavy rain through this area in the 1hr rainfall amounts, though there is differences in where that may occur with anywhere through Clark, Lincoln, and Mohave counties potentially being impacted. Will need to watch how the potential MCV and how that develops- if there is an increase signal for a piece of energy to move into the region Tuesday morning, higher flash flood impacts are possible in parts of the region. .LONG TERM...Wednesday through Sunday. An active monsoon pattern is expected to continue through the remainder of the week and over the weekend with a favorable monsoonal flow keeping moist conditions in place across our region through the period. On Wednesday, an area of low pressure along the Oregon and northern California coast and high pressure over the Intermountain Region continues to direct deeper moisture northward into our area. Ensemble mean forecasts widespread anomalous PWATs across our area through much of the long term period. The moisture will keep thunderstorms in the forecast each day along with below normal temperatures through the period. The Climate Prediction Center's 8-14 day forecast graphics show probabilities of above normal precipitation and below normal temperatures continuing through the 3rd week of August. && .AVIATION...For Harry Reid...Monsoon moisture will return to southern Nevada today through Wednesday. Thunderstorms will likely develop over the higher terrain early this afternoon, with the best chance of seeing storms in the Las Vegas Valley between 21-00z. Gusty outflow winds up to 30 kts are possible near any storm and CIGS could potentially lower to around 8k feet. Additional thunderstorm activity is expected Tuesday with storms being more widespread during the afternoon and early evening. For the rest of southern Nevada, northwest Arizona and southeast California...Monsoon moisture increasing across the region today will lead to isolated to scattered thunderstorms primarily over the mountains with cloud bases of 12-15 kft MSL Storm movement will be toward the west-northwest. There is a possibility of thunderstorms impacting TAF sites in the Las Vegas Valley, DAG and BIH. Prevailing winds will be light and variable this morning then increasing to 10- 20 knots this afternoon and TAF sites could see gusty outflows from distant thunderstorms this afternoon into this evening. Additional thunderstorms are expected Tuesday across most areas. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && SHORT TERM/LONG TERM...Nickerson AVIATION...Gorelow For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
The Santa Ana Mts radar (KSOX), 122 km away, was scanning. The volume nearest the first event began at 20:56 UTC.
6 flash flood, 2 thunderstorm wind. Local standard time, as filed.
Six inches of water flowed through the intersection of Prescott Ave and Del Mar St.
The intersection of Yucca Mesa Rd and Aberdeen Dr was flooded.
Thunderstorm winds damaged hangars and blew planes out at the Daggett Airport, then blew down numerous power poles and trees in Barstow, knocking out power to thousands of customers.
Southbound Interstate 15 was flooded near Nipton Road, and closed to the Nevada state line. One person was injured (indirect) in a crash on the wet highway before it was closed.
Highway 127 was flooded at Baker Blvd.
Highway 127 was closed between mile markers 15 and 21.
Water and mud covered Goffs Road in multiple locations.
Thunderstorm winds tore large sections of roofing and siding off a boat storage unit.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2022Every state in 2022This day in weather historyWarnings in California, August 2022
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: 1054345, 1054356, 1054357, 1054366, 1054368, 1054372, 1054375, 1054377.