One person died in the Las Vegas Valley of heat-related causes.
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.
One person died in the Las Vegas Valley of heat-related causes.
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 28, 7:49 PM PST, 4 hours 11 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 849 PM PDT Fri Jul 28 2023 .SYNOPSIS...Dry conditions continue before monsoonal moisture returns late-weekend into early-next week. This moisture will increase shower and thunderstorm chances for the Mojave Desert and southern Great Basin, while decreasing temperatures areawide. && .UPDATE...Satellite and radar imagery show another large complex of thunderstorms over southeast Arizona between Tucson and Phoenix this evening but in our area, thunderstorm activity is quickly winding down. at 845 pm, one lone storm northeast of Kingman lingered but appears to be in the decaying stage. We are expecting a warm but quiet night across the area tonight with winds becoming light and skies mostly clear to partly cloudy depending on your location. The forecast for the overnight period looks in good shape so updates are needed at this time. && .PREV DISCUSSION...144 PM PDT Fri Jul 28 2023... .SHORT TERM...Today through Sunday. Another day of above-average temperatures and breezy afternoon southwest winds for the area, with gusts between 25 and 30 mph expected. Most areas will experience dry conditions today, but isolated convection is expected across Mohave County once again this afternoon. The HREF shows increasing PWATs pushing northward through the county through the day today into the 0.75 to 1.25" range with SBCAPE between 500 and 750 J/kg. Gusty winds and cloud-to-ground lightning will be the primary concerns today, with convection favoring the higher terrain. A training storm east of Kingman along State Route 66 through Valentine is eluding most rain gauges; however, one gauge that briefly sat below it measured 0.20 inches in 20 minutes. This specific area has experienced training storms over the last few days, with the latest MRMS soil moisture estimate around 50 percent (compared to 0 percent in surrounding areas). As such, a Flood Advisory was issued for Hackberry Road south of State Route 66 at Valentine due to the high potential for nuisance flooding. An Excessive Heat Warning continues for the Colorado River Valley through Saturday at 8pm PDT due to anomalously warm overnight temperatures as well as afternoon temperatures approaching 118. Going into the weekend, the dominating area of high pressure over the Desert Southwest will start to meander westward. This will result in a south-southeasterly flow, which will help escort moisture back into the Mojave Desert and moderate temperatures. Details in LONG TERM. .LONG TERM...Monday through next Friday. As the monsoonal high pressure meanders westward, an inverted trough will move northward through Mexico. This shortwave trough will get wrapped into the dominant high pressure late-weekend into early-next week, pushing it into our forecast area and bringing with it substantial moisture as well as a vorticity maximum. PWATs will increase to up to 200 percent of normal by Monday afternoon across the Mojave Desert and southern Great Basin. For this reason, thunderstorm chances will return to the region, with best chances across Mohave, Lincoln, and eastern Clark counties. The NBM PoPs continue to trend northwestward with each run. 'Slight' PoPs now reach much of Esmeralda and southern Inyo counties on Tuesday and Wednesday afternoons. Monday through Wednesday, strong outflow boundaries from area thunderstorms have the potential to further enhance this westward moisture flux, which would further increase PoPs for Inyo, San Bernardino, and Esmeralda counties within 24 hours of occurrence. Lowering heights coupled with this moisture flux will allow temperatures to cool below seasonal averages for the start of August. In fact, the forecast high temperature for Las Vegas Tuesday afternoon has dropped to 99, which, if comes to fruition, will be the first sub-100 degree day in Las Vegas since June 29th. The extended forecast indicates an eastward retreat of the monsoonal high midweek, with associated drops in PoPs and increases in temperatures areawide. This is supported by the 14-day CPC outlook. && .AVIATION...For Harry Reid...Breezy southwest winds this afternoon with gusts of 20-25 knots. Gusts subside around 03-04z, though winds remain from the southwest through the night at 6-10 knots. Southwesterly gusts resume late tomorrow morning. Isolated storms possible southwest of town tomorrow afternoon. Depending on their intensity, could see some gusty southeast outflow reaching the airport. Storms should stay 10 miles or more away, but may could affect approaches or departures from the east. FEW-SCT mid-level and high clouds throughout the period. For the rest of southern Nevada, northwest Arizona and southeast California...Breezy southwest winds in the Las Vegas Valley this afternoon, returning to typical diurnal directions after sunset. Light and variable winds at KBIH until 21z-23z when westerly breezes arrive. Winds turn northerly around sunset and persist through the night. Westerly breezes continue at KDAG with afternoon gusts around 25 knots. In the Colorado River Valley, southerly breezes expected through the TAF period. Gusts up to 20 knots this afternoon, tapering off around sunset. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && UPDATE...Salmen DISCUSSION...Varian AVIATION...Woods 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 heat. Local standard time, as filed.
One person died in Las Vegas of heat-related causes.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Heat, Las Vegas Valley | 2023-07-29 | 78 | Male | Permanent Home | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2023Every state in 2023This day in weather historyWarnings in Nevada, July 2023
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: 1119337.