One man died of heat related causes in the Las Vegas Valley.
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 man died of heat related causes in the Las Vegas Valley.
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 Apr 10, 7:30 PM PST, 4 hours 30 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 830 PM PDT Mon Apr 10 2023 .SYNOPSIS...A ridge of high pressure will provide near record high temperatures through Tuesday. Windy conditions will develop Wednesday before temperatures fall back to normal Thursday and Friday with the passage of a cold front. A warming trend returns for the weekend as another ridge rebuilds over the West. && UPDATE...It was another warm afternoon with Las Vegas reaching 90 degrees, marking the first 90+ degree day of the year. This occured on the heals of the first 80+ degree day of the year just yesterday. Additionally, Death Valley broke the century mark for the first time as well, reaching up to 101 by the late afternoon. Temperatures will peak tomorrow aided by some afternoon breezes before a gradual downtrend begins Wednesday. The current forecast is in good shape with no evening update necessary. -Outler- && .SHORT TERM...Through Wednesday. Near record high temperatures through Tuesday followed by windy conditions Wednesday will be the main concerns for minor weather impacts the next few days. A broad ridge over the western states was evident on water vapor imagery as was a trough slowly swinging into the Pacific Northwest. The ridge axis will move over the plains states by Tuesday afternoon as the Pacific Northwest trough progress inland then drops over our region Wednesday. This will provide south- southwest winds generally 15-25 mph and increased mixing of the boundary layer Tuesday afternoon leading to the highest temperatures of the week. The latest NBM indicates there is a 73 percent probability that Las Vegas will tie or exceed the April 11th record high of 92 degrees. Temperatures will decrease 5-6 degrees Wednesday associated with the trough as the typical belt of gusty southwest winds develops from northern San Bernardino County across southern Nevada and northwest Arizona during the afternoon and early evening. This wind event does not appear exceptional, but many sites should see gusts of 40-45 mph for at least a few hours during this time. .LONG TERM...Thursday through Monday. Model ensembles indicate the trough axis will move over the region Thursday and there will be sufficient moisture and instability for a 30-40 percent probability of showers and a slight chance of thunderstorms over central and northern Lincoln County. Snow levels will be around 7000 feet. Elsewhere, breezy conditions and temperatures lowering to near normal can be expected with winds becoming north behind the passing cold front. Friday will see little change in temperatures and decreasing winds with speeds generally below 15 mph for most areas. Another warm and tranquil weekend looks to be on the horizon as a broad ridge briefly moves overhead Saturday and early Sunday ahead of yet another trough moving into the Pacific Northwest which will begin increase southwest winds by Monday. && .HYDROLOGY...Snowmelt in the southern Sierra Nevada of Inyo County will start to accelerate with the onset of warmer temperatures. Creeks, streams and rivers will begin experiencing higher flows that will likely continue for several weeks. As creeks swell, some campgrounds will be at risk of flooding. Roads used to access campgrounds and hiking trailheads will also be at risk of flooding. Remember, never drive through flooded roadways or around barricades. Pastureland or farmland adjacent to creeks, streams and rivers could experience areas of flooding and a prolonged period of standing water. For further information on Inyo National Forest Campgrounds go to: fs.usda.gov/Internet/FSE_DOCUMENTS/fseprd486882.pdf Due to their swift currents and very cold water temperatures, creeks and streams pose life-threatening dangers. Extra caution should be exercised as exhaustion or unconsciousness from hypothermia could set in quickly. Always wear a properly fitted life jacket for all water activities. && .AVIATION...For Harry Reid...Light winds favoring typical diurnal directions are expected once again today and tonight. Guidance still indicates a chance of occasional gusts to 15kts through late afternoon, but any occurrence of this is expected to be short-lived. Light winds return tonight into Tuesday morning, followed by increasing southwesterly winds after 18Z. Skies will remain mostly clear into Tuesday afternoon. For the rest of southern Nevada, northwestern Arizona, and southeastern California...Winds will be light and follow typical diurnal directional trends into Tuesday afternoon. The exception will be KBIH, where breezy southerly winds with occasional gusts will continue into early this evening. Elsewhere winds, generally 10kts or less, are expected into tomorrow morning. Increasing south to southwest winds are likely Tuesday afternoon as a trough of low pressure approaches the region. Skies will remain mostly clear into Tuesday morning, with increasing high clouds AOA 20kft spreading west to east Tuesday afternoon. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && SHORT TERM/LONG TERM...Adair HYDROLOGY...Pierce AVIATION...Planz 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 man died of heat related causes in the Las Vegas Valley.
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 | 2023-04-11 | 39 | Male | Outside/Open Areas | Indirect |
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, April 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: 1093810.