A weak push of monsoon moisture plus the ongoing excessive heat fueled isolated showers and thunderstorms over the southern Mojave Desert. One storm produced minor 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.
A weak push of monsoon moisture plus the ongoing excessive heat fueled isolated showers and thunderstorms over the southern Mojave Desert. One storm produced minor 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 Aug 5, 11:53 AM PST, 22 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 1253 PM PDT Mon Aug 5 2024 .SYNOPSIS...Excessive Heat will continue through Tuesday with minimal thunderstorm activity, mainly limited to Northwest Arizona and the southern Mojave Desert. A modest increase in monsoonal moisture midweek and beyond will result in moderating temperatures, through still above normal, along with thunderstorm activity spreading into the eastern Mojave Desert. && .SHORT TERM...Through Tuesday. Dangerous heat will continue through Tuesday evening for many locations outside of higher terrain, the Owens Valley, Esmeralda County, and central Nye County. Widespread moderate to high Heat Risk is expected with extreme heat risk forecasted for urban areas such as Las Vegas, NV. High temperatures on Tuesday will be similar to today, which will run about 5 to 10 degrees above normal. Continued well above normal high temperatures will compound with limited overnight relief tonight as low temperatures remain 10 degrees above normal and numerous record high low temperatures will be possible. The Excessive Heat Warning remains in effect through Tuesday evening for the areas expected to see the highest risk for heat related impacts and no changes have been made to the current headlines. Other than the heat, any scattered showers and thunderstorms that develop this afternoon will dissipate after sunset. Hi-res models show additional showers developing tonight in parts of Mohave County, mainly in northern Mohave COunty where a weaken MCV will move through tonight and early Tuesday morning. The risk for impacts is low as anything that develops will be isolated and there will be limited instability and moisture for organized precipitation and impacts. These showers should end by sunrise, and after a brief lull through Tuesday morning, another round of showers and thunderstorms are possible Tuesday afternoon. The highest moisture will remain over Mohave County which will again be the focus for afternoon thunderstorm probabilities. Tomorrow's storm chances in Mohave County will be higher than today, with a 30% to 50% chance for thunderstorms mainly between 2 PM and 6 PM. Gusty winds over 40 MPH and lightning will be the main concern with thunderstorms on Tuesday. Further west, it should remain dry as moisture remains limited and there is no significant forcing mechanism to initiate any showers or storms on Tuesday. .LONG TERM...Wednesday through Sunday. The big hot ridge will remain the dominant feature over our area through this period, but with subtle changes. By Wednesday, an easterly wave originating in the Gulf Coast states is forecast to be moving west around the southern periphery of the ridge, tracking along the international border of AZ and CA. As noted by previous shifts, this wave is farther south than earlier model runs suggested, so its effects on our thunderstorm chances and temperatures will be muted, but not zero. Thunderstorm chances should expand into the higher terrain of Lincoln, Clark, and eastern San Bernardino counties, while the highest chances remain over Mohave County through the period. Temperatures will come down a few degrees, which should be enough to knock HeatRisk down to Moderate over most of our CWA, although splotches of Major and Extreme have begun to appear on Wednesday and even Thursday in the past few model runs. This trend will need to be monitored. Looking beyond this period, there has been strong model agreement for a few runs now on a trough reaching the West Coast early in the following week, which could bring some relief from the heat and humidity. Stay tuned. && .AVIATION...For Harry Reid...Easterly winds with speeds of less than 10 knots turn to the southwest this afternoon. Although thunderstorms are not expected in the vicinity of the terminal, temporary changes in wind direction due to outflow boundaries from distant storms in northwest Arizona cannot be ruled out. Overnight, winds should shift to the south and decrease further before becoming variable in the early morning hours. Southwesterly winds of less than 10 knots develop again tomorrow afternoon. FEW-SCT mid and high clouds remain throughout the TAF period. For the rest of southern Nevada, northwest Arizona and southeast California...Thunderstorms will develop in northwest Arizona this afternoon. Although confidence is low in storms within the vicinity of any terminal, outflow winds may reach terminals in the Colorado River Valley and Las Vegas Valley, causing temporary changes in wind speed and direction. Gusts between 25 and 35 knots cannot be ruled out in the Colorado River Valley. Outside of storms, winds should follow a diurnal wind pattern with FEW to SCT mid and high clouds. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && SHORT TERM...Nickerson LONG TERM...Morgan AVIATION...Meltzer For more forecast information...see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Shallow water flowed over Adobe Road, which remained passable.
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, August 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: 1207869.