A push of monsoon moisture fueled scattered thunderstorms, many of which produced severe weather and flash flooding.
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.
A push of monsoon moisture fueled scattered thunderstorms, many of which 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 4, 11:57 PM PST, 18 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Las Vegas NV 1257 AM PDT Fri Sep 5 2025 .KEY MESSAGES... * Monsoonal moisture remains in place today before slowly retreating eastward out of the region, shifting the best precipitation chances further east each day through Saturday. * Dry conditions and relatively cooler temperatures are expected to return next week. && .DISCUSSION...Today through Thursday. Moisture from tropical storm Lorena will continue to funnel north into the Desert Southwest today. The greatest moisture will span from the eastern half of San Bernardino County into Clark and Mohave counties today, with PWATs between 1.25 and 1.75 inches. Currently watching a group of strong multicellular storms supported by a vort max tracking through southern Nevada and northwestern Arizona. So far they have produced gusts in the 30 to 40 mph range along with frequent lightning. These should weaken around sunrise. Another round of convection starts around 18Z, initially favoring high terrain before moving into the valleys. Some guidance shows outflow driven storms in the southern Great Basin lasting later into the night. Once again, brief heavy downpours and gusty outflow winds are the main concerns. Some of the stronger storms may produce hail as well. Another round of thunderstorms is forecast for Saturday, but these are expected to be more limited in magnitude and coverage. Moisture decreases to the 1.0 to 1.5 inch range as the trough and associated dry air pushes in from the west. A few lingering storms cannot be ruled out in northwestern Arizona on Sunday. A deep, early season trough will track east and its axis should move into the West Coast by Tuesday. The trough will continue to maintain dry air and also produce lowering heights aloft, which will result in a gradual decrease in temperatures through Thursday. Highs should be 5 to 10 degrees below average by Wednesday, which means highs in the low 90s in Las Vegas. && .AVIATION...For Harry Reid...For the 06Z Forecast Package...There is a risk of thunderstorms moving in from the northeast overnight. The most likely scenario is for the terminal to see outflow winds, but a storm at the terminal cannot be ruled out. Quiet weather is likely to return around sunrise Friday, followed by light easterly winds developing around mid morning. New thunderstorms are expected to develop over the mountains in the afternoon, with small chances for outflow winds and for a storm at or near the terminal. Quiet weather should return Friday evening. Temperatures expected to remain below 100F. For the rest of southern Nevada, northwest Arizona and southeast California...For the 06Z Forecast Package...Isolated to scattered thunderstorms will continue overnight, with the greatest chances in Lincoln, Clark, and Mohave counties. New thunderstorms are expected to develop across the region Friday afternoon, mainly over the mountains. The main threats with thunderstorms will be erratic gusty winds, heavy rain, and low ceilings with terrain obscuration. Away from storms, VFR conditions are expected with wind gusts less than 20 knots. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && DISCUSSION...Meltzer AVIATION...Morgan For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
The Las Vegas radar (KESX), 109 km away, was scanning. The volume nearest the first event began at 08:17 UTC.
7 flash flood, 2 flood, 1 thunderstorm wind, 1 hail. Local standard time, as filed.
The Muddy River flooded Hidden Valley Road, which was closed from Interstate 15 to Highway 168.
The Overton Wash flooded Moapa Valley Boulevard.
White Domes Road was flooded with water and rocks.
Highway 93 was flooded and closed between Caliente and mile marker 101. Water was reported to be as much as three feet deep. Roads in Caliente were flooded with water, mud, debris, and boulders. Water got into a couple of buildings.
The Muddy River flooded Hidden Valley Road.
Moapa Valley Blvd was flooded with extensive mud and debris.
Valley of Fire State Park Visitor's Center had water, mud, and debris in the building. White Domes Road had significant flooding, and the park's main road was flooded and impassable.
Several roads were flooded, and Highway 160 started to break away under vehicles near Carrol Street. One swift water rescue was needed.
Highway 160 was closed near Trout Canyon Road due to flooding.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2025Every state in 2025This day in weather historyWarnings in Nevada, 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: 1295903, 1295904, 1295905, 1295906, 1295907, 1295908, 1295909, 1295910, 1295911, 1295912, 1295913.