Low pressure moved very slowly east from the eastern Pacific across the Mojave Desert, triggering scattered thunderstorms for a few days. Several storms produced severe weather and flash flooding.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
Low pressure moved very slowly east from the eastern Pacific across the Mojave Desert, triggering scattered thunderstorms for a few days. Several storms produced severe weather and 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 26, 11:38 AM PST, 2 hours 2 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Las Vegas NV 1238 PM PDT Fri Sep 26 2025 .KEY MESSAGES... * Chances of showers and thunderstorms are in this weekend's forecast for southern Nevada, southeastern California, and northwestern Arizona. * Moisture gradually scours out of the region through the work week, with a fall-like pattern bringing below-normal temperatures and breezy afternoons. && .DISCUSSION...Through Thursday A cutoff upper level low, currently centered north of Twentynine Palms, will be the main driver of weather this weekend. Plentiful moisture along with forcing from the low has already set off thunderstorm activity early this morning over northwestern Arizona. One storm produced a gust of 67 mph at 6 AM PDT in Nye County. This activity should ramp up this afternoon with the introduction of surface heating, particularly in regions along and south of Interstate 15. However, this early morning activity may hinder development later today due to leftover cloud cover and exhausted atmospheric instability. CAMs have also backed off, pushing the more active period into the early afternoon rather than late morning. Heavy rainfall, gusty outflow winds, and small hail are all possibilities with the strongest storms. The position of the low becomes favorable for moisture advection on Saturday, sending PWATs into the 0.75 to 1.50 inch range. The result will be more widespread POPs and an increased concern for heavy rainfall and flash flooding. The primary areas to watch for flash flooding are southern San Bernardino and southern Mohave counties. The upper level low will track east through Arizona on Sunday, leading to a reduction in moisture and precipitation potential. The greatest chances appear to be in northwestern Arizona and far eastern Nevada, where forcing from the weakening low and lingering moisture may kick off storms in the afternoon. Dry southwesterly flow will take its place through the workweek as an upper level trough moves into the Pacific Northwest. There is some uncertainty in whether remnant moisture from Hurricane Narda will make it into the flow, but if it does, POPs linger into Monday and Tuesday. Outside of precipitation, lower heights aloft allow for below average temperatures through most of the week. && .AVIATION...For Harry Reid...For the 18Z Forecast Package...Thunderstorms are the main concern again this forecast period. Storm activity should increase later today in Arizona and southern Nevada, then track northwest. This includes the Mormon Mesa and Peach Springs corridors. Although the most favorable time for storms reaching the terminal is 20Z to 00Z this afternoon, cloud cover from earlier storms may inhibit development later in the day. The primary threats with any storms that develop will be rain, lower CIGS, lightning, and variable gusty outflow winds. Outside of any convective influence, winds will remain relatively light, 10 knots or less, and will follow typical diurnal directional trends. For the rest of southern Nevada, northwest Arizona and southeast California...For the 18Z Forecast Package...Thunderstorms will be the main concern again this forecast period. The best chances for storms will be south and east of the Interstate 15 corridor. Activity is ongoing in northwestern Arizona and southern Nevada and should move northwest through the rest of the morning and afternoon. However, clouds left over from earlier convection may inhibit additional storm development later today. Some storms should also reach southeastern California during the afternoon and evening. The main concerns with storms will be erratic gusty winds, heavy rain, and low ceilings with terrain obscuration. Away from storms, winds follow diurnal trends with speeds of less than 12 knots. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && DISCUSSION/AVIATION...Meltzer For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
The Edwards AFB radar (KEYX), 129 km away, was scanning. The volume nearest the first event began at 22:53 UTC.
9 flash flood, 2 flood, 1 strong wind, 1 thunderstorm wind. Local standard time, as filed.
Landspout. Location: 35.228 -114.939. Several photos were taken from Cal-Nev-Ari and as far away as near Laughlin. The location is estimated based on these photos. The landspout remained over open desert and did no discernible damage.
A thunderstorm wind gust of 59 mph was measured at the mesonet site UP165.
California Highway Patrol reports flash flooding on Nipton Road.
Highway 95 was flooded with water and mud at mile marker 70.
Morning Star Mine Road was flooded and impassable.
Water and mud flowed across Highway 62 near mile marker 56. Multiple vehicles were stuck.
Kelso Road was closed south of Kelso due to damage from water, mud, and debris.
There was minor flooding of Highway 95 south of Needles.
Flash flooding damaged a water main in Yucca Valley, knocking out water service to part of the town.
Highway 247 was flooded and impassable at Buena Suerte Road due to flooding and debris.
Highway 62 was flooded at Church Street.
Yucca Mesa Road was flooded with water and debris.
There was minor flooding of Highway 168 at Gilbert Pass.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2025Every state in 2025This day in weather historyWarnings in California, September 2025
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: 1295954, 1295933, 1295934, 1295956, 1295959, 1295962, 1295963, 1295964, 1295966, 1295967, 1295968, 1295969, 1295970.