An upper level low pulled moisture from the remnants of Tropical Storm Alvin into the Desert Southwest, fueling thunderstorms which produced severe weather and 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.
An upper level low pulled moisture from the remnants of Tropical Storm Alvin into the Desert Southwest, fueling thunderstorms 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 Jun 2, 6:06 PM PST, 28 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 706 PM PDT Mon Jun 2 2025 .SYNOPSIS...Additional rounds of showers and thunderstorms are possible through midweek as sufficient moisture and instability remain in the area. Precipitation totals should be light and most activity will take place over high terrain. The area slowly dries out and temperatures begin to climb as a ridge builds later this week. && .UPDATE... Early this evening, storms have largely dissipated over the Sierra, with focus remaining on a cluster of strong to severe thunderstorms currently moving out of southern Lincoln County into northern Clark County. The strongest storm is a cell that's been rather persistent, and capable of producing large hail and damaging wind gusts as it travels southward down Highway 93 toward Interstate 15. Notably, this storm is also producing rainfall rates in excess of 3 inches per hour. The longevity of this storm remains in question, but overall, storms are expected to gradually weaken after sunset with the loss of insolation. However, some convective persistence can be expected along outflow boundaries as these boundaries sag southward across Clark and Mohave Counties into tonight, given shear has ticked up the past few hours to 25-30KT across Clark County and through the Lower Colorado River Valley, and CAPE remains between 1000-1500 J/kg. Hazards with storms will be frequent lightning, heavy rain, and gusty winds, along with reduced visibility in rain or blowing dust, though hail cannot be ruled out, especially early this evening. DCAPE remains around 1000-1250 J/kg as well, lending additional credence to the wind threat this evening. Have made some adjustments to PoPs, sky, and weather to account for current observations and expected trends, with the remainder of the forecast on track this evening. && .DISCUSSION... The upper low that helped draw in tropical moisture has shifted off to the east leaving behind plenty of low level moisture. Dew points across the region are currently in the 40s and 50s, which is very unusual for June. So far today, showers and thunderstorms have been firing along the Sierra and White Mountains of Inyo County and across portions of northern Lincoln and central Nye counties. These areas are currently seeing the greatest instability with CAPE values in the 500-1000 j/kg along with LIs ranging from 0/-2 deg C. Storms over the Sierra and White Mountains will gradually decrease this evening with loss of daytime heating, but the storms over Lincoln County have the potential of maintaining and expanding this afternoon and evening as they move south. Those storms will be moving into areas that are seeing increasing instability as the earlier cloud cover continues to erode. Along with the increasing instability, high dew points and high PWs will lead to some storms producing brief heavy rain and minor flooding concerns. We did get a spotter report of small hail near Eagle Valley in Lincoln County as the storm went overhead. While most of the thunderstorm activity is expected to remain in Utah, areas of southern Lincoln, northeast Clark, and northern Mohave counties could see some stronger storms as we go through the afternoon and into the evening. We could also see some gusty outflow winds as DCAPEs in the area are around 1000 j/kg and it is possible that some of those winds could make it into the Las Vegas Valley. Storms will gradually diminish late tonight. Storms Tuesday are expected to be more favored over the southern half of the CWA as deep moisture remains in place. PWs will still be around 200-300 percent of normal which translates to around 1.00" - 1.50" inches. With plenty of morning sunshine this should translate to scattered showers and thunderstorms in the afternoon as conditions will remain rather unstable. Most of these storms will favor the higher terrain, but some valley locations could see a storm or two. Flash flooding could be more of a concern as winds aloft remain around 10 kts or less. On Wednesday, another low off the southern California coast will begin to shift inland. This low will take a very similar path to the previous low and although there isn't a significant amount of tropical moisture available, the latest models indicate increasing PWs and surface dew points once again. This will lead to more scattered showers and thunderstorms over the southern half of the CWA. Again, these will likely be favored over the higher terrain, but any storms could produce heavy rain. WPC has added our eastern counties, including Lincoln, Clark, and Mohave into a marginal Excessive Rain Outlook. .LONG TERM...Thursday through Monday. Weak northwest flow will continue across the region late in the week. A series of weak short waves will move through the flow and interact with lingering moisture, resulting in slight PoPs through early Friday. The best chances will be over the southern Great Basin and Arizona Strip. The remaining moisture should move east of the area by Friday afternoon, bringing an end to the precipitation chances. Despite the shortwaves, a high-pressure ridge building over the eastern Pacific and northern Mexico will result in increased 500 mb heights across the Desert Southwest. As such, temperatures will climb back to 4 to 8 degrees above seasonal norms heading into the weekend, and temperatures approaching 10 degrees above normal heading into next week. This will result in desert valleys experiencing high temperatures in the 100s once again, and widespread "Moderate" Heat Risk from Sunday onward. && .AVIATION...For Harry Reid...For the 00Z Forecast Package...Scattered convection will continue through north and northeast corridors through the evening. A few showers may get into northeast Clark County between 03Z-06Z, but precipitation is not expected in the valley this evening. After a lull in activity tonight, scattered convection is expected to develop Tuesday afternoon across southern Nevada into San Bernardino and Mohave counties. There is a chance that showers and thunderstorms will move into the valley terminals Tuesday after 21Z which could bring moderate to heavy rain, CIGs below 10kft, lightning, and sudden gusty winds over 30KT. Most likely, winds will remain un-impactful through tonight as east winds transition to the south or southeast this evening. Wind speeds of 8-10KT are possible through tonight before becoming light early Tuesday morning. Still watching the potential for northeast winds to push through the valley between 04Z-06Z tonight. Confidence remains low for this to occur, but it it did occur, expect gusty northeast winds over 25KT. After a period of light winds Tuesday morning, east to southeast winds will return Tuesday afternoon and will remain light. This is outside eof the potential for erratic outflow winds, which would be possible with thunderstorms after 21Z. Low confidence in the wind forecast after 00Z Tuesday evening due to convective influence and what sets up in the afternoon. For the rest of southern Nevada, northwest Arizona and southeast California...For the 00Z Forecast Package... SCattered convection will continue through the afternoon in the Southern Great Basin into the terrain of Inyo County. Most likely, thunderstorms will diminish after sunset, however the potential exists for ongoing precipitation in southwest Utah and Lincoln County to merge and move through northeast Clark into northern Mohave County through 08Z tonight. With any thunderstorms this evening and tonight- lightning, sudden gusty winds, moderate to heavy rain, and CIGs to 8000ft would be possible. KBIH has the highest risk of thunderstorm impacts through about 04Z. After a dry period late tonight through Tuesday morning, another round of scattered convection will develop along and south of the I-15 as well as in the Sierra. Similar thunderstorm impacts would be possible on Tuesday to today, though coverage may be more widespread than today. The only TAF site that should not have a threat for thunderstorms Tuesday afternoon is KEED and KIFP as convection should not make it into the Colorado River Valley until after 00Z. Outside of convection, south to southwest winds around 10 KT this evening will diminish after sunset. Light winds return tonight before similar winds return late Tuesday morning and afternoon. Additional convection may develop Tuesday afternoon along and south of the I-15 as well as in the Sierra. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && UPDATE...Phillipson SHORT TERM...Gorelow LONG TERM...Planz AVIATION...Nickerson 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), 135 km away, was scanning. The volume nearest the first event began at 02:36 UTC.
5 thunderstorm wind, 4 flash flood, 4 hail. Local standard time, as filed.
Water and debris covered Highway 93 between Lincoln County mile markers 2 and 4, closing the highway.
Water and debris covered Highway 93 between Clark County mile markers 80 and 81, closing the highway.
Valley of Fire Highway was flooded and closed near the I-15 exit.
There were multiple reports of 1 to 1.5 inch hail.
Thunderstorm winds blew down numerous power poles, knocking out power to Amargosa Valley and Death Valley.
The hail size was estimated.
The hail size was estimated.
Highway 93 was flooded between Clark County mile markers 70 and 80.
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, June 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: 1274013, 1274014, 1274015, 1274016, 1274017, 1274018, 1274019, 1274020, 1274021, 1274022, 1274023, 1274024, 1274025.