Monsoon moisture fueled isolated thunderstorms over the Mojave Desert. 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.
Monsoon moisture fueled isolated thunderstorms over the Mojave Desert. 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 Jul 18, 1:15 PM PST, 4 hours 9 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 215 PM PDT Thu Jul 18 2024 .SYNOPSIS...Hot temperatures will continue with temperatures climbing into the weekend. Daily thunderstorm chances will continue as well, especially across the higher terrain, mainly for Mohave County and the southern Great Basin, although there continues a slight chance of thunderstorm activity in the Las Vegas Valley. && .SHORT TERM...Tonight through Sunday Showers and Thunderstorms will diminish after sunset this evening. High pressure drifting westward has and will continue to keep monsoon moisture underneath it. This moisture will keep chances of thunderstorms each afternoon through the weekend for Mohave County and the southern Great Basin. The Las Vegas Valley and areas south and east will see a lesser chance of storms and this clearing will allow for hotter temperatures. An Excessive Heat Warning is in place for the Colorado River zones and Southern Mohave/San Bernardino Counties on Friday, expanding to Las Vegas and the lower elevations of San Bernardino County and Death Valley for Saturday and Sunday. .LONG TERM...Monday through Thursday Monsoon moisture increases Monday across the area, bringing an increased chance for thunderstorms over a larger area, spreading westward to include much of the CWA. PWAT values of 1.5" are possible by Tuesday for Clark County which will make flash flooding a greater concern with storms that do form. Storms are possible each afternoon through the forecast period. On top of the monsoon activity, heat will continue through next week with temperatures 5-10 degrees above normal for this, climatologically the hottest time of the year. A large trough of low pressure will move into the Pacific Northwest later in the week, and may eventually bring some relief from the heat. However, there is uncertainty as to its evolution at this time. As such there is low confidence in its timing and impacts. && .AVIATION...For Harry Reid... Showers and thunderstorms will begin to form in the higher terrain to the west and south of the Las Vegas Valley around 19Z. As thunderstorm activity spreads into the valley, expect strong gusty winds from their direction. The direction will likely favor the southwest due to terrain-driven activity, but could ultimately come from any direction that storms form this afternoon. Shower and thunderstorm chances diminish after sunset, with winds returning to diurnal patterns through the evening and overnight hours. A return of thunderstorms Friday afternoon will begin over the western and southern mountains, with less than 20 percent chance of formation over the terminal. For the rest of southern Nevada, northwestern Arizona, and southeastern California... Thunderstorms expected at and around all TAF sites this afternoon, with best chances between 19Z and 03Z. Expect strong, gusty winds from the direction of storms, particularly near Las Vegas Valley TAF sites and KDAG where gusts over 35 kts will be possible. Winds return to diurnal trends overnight. Shower and thunderstorm chances will return Friday afternoon, with impacts expected at all TAF sites including heavy rain and locally strong wind gusts. && && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && DISCUSSION...Berc AVIATION...Soulat For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
Preliminary Local Storm Report
National Weather Service Las Vegas NV
124 PM PDT Thu Jul 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0115 PM Flash Flood 1 SSE Sam Boyd Stadium 36.08N 115.01W
07/18/2024 Clark NV Trained Spotter
Trained spotter reports flooding with a
couple of inches flowing in the streets and
water accumulating in backyards.
&&
MSPreliminary Local Storm Report
National Weather Service Las Vegas NV
149 PM PDT Thu Jul 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0110 PM Tstm Wnd Gst 1 S Sam Boyd Stadium 36.07N 115.02W
07/18/2024 M60 MPH Clark NV Mesonet
North Henderson sensor gusted to 60 mph due
to a nearby thunderstorm at 1310.
&&
VARIANThe Las Vegas radar (KESX), 118 km away, was scanning. The volume nearest the first event began at 01:22 UTC.
1 flash flood. Local standard time, as filed.
Highway 127 was flooded near mile marker 15. One car was stranded due to water getting into the ignition.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2024Every state in 2024This day in weather historyWarnings in California, July 2024
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: 1205777.