Two people died in Las Vegas 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.
Two people died in Las Vegas 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 Apr 22, 7:15 PM PST, 4 hours 45 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 815 PM PDT Sun Apr 22 2018 .SYNOPSIS...Dry, quiet, and warm conditions are expected through much of the upcoming week. Temperatures will reach their highest levels of 2018 thus far. && .UPDATE...A few high based showers developed late in the afternoon across Mineral county which clipped the far western portions of Esmeralda county this evening. Shower activity has since diminished and otherwise mostly clear skies exist across the region. The current forecast is in good shape and no updates are planned this evening. -Outler- && .SHORT TERM...Today through Monday Night. Quiet and warm conditions will continue through the duration of the short term period. High clouds that moved into the region overnight were beginning to thin and move east of the area. Wind-wise, you'd be hard-pressed to find an area with gusts over 15 MPH across the area, and most areas will remain under 10 MPH. Temperatures are as expected today, with 85F at McCarran and 93F at Death Valley as of 1245PM, on its way to about 90F and 101F respectively this afternoon. These conditions should continue through Tuesday, with temperatures climbing ever so slightly Monday. As mentioned by the previous shift, the one thing to watch will be isolated high- elevation convection near the Sierra crest. However, between limited moisture and instability I have left the forecast dry for now. .LONG TERM...Wednesday through Sunday. Wednesday and Thursday will be characterized by above normal temperatures, mostly dry conditions, and periods of breezy, south to southwest winds. A few extra high clouds can be expected on Wednesday as a weak impulse passes to our south. A closed low centered off the northern California coast will slowly shift eastward midweek which will gradually weaken the ridge over the local area; creating potential for an isolated shower or two over the southern Sierra on Thursday. Little has been changed to the forecast for Friday and Saturday as long term models diverge with the evolution of the closed low going into the weekend. The latest GFS runs have the low passing directly over the area this weekend while the ECMWF keeps the low tracking to our north across the Great Basin. This leaves very different outcomes for the weather over the local area so have only made small changes to the forecast. The main change was to add low end precip changes to Esmeralda and northern Inyo counties and increase wind speeds slightly areawide for Friday and Saturday. Temps for the weekend will be highly dependent on how this scenario unfolds. && .AVIATION...For McCarran...Diurnal trends expected through today. Overnight southwest winds should remain below 11 kts before decreasing early tomorrow morning. Southwest winds will dominate through much of tomorrow reaching KLAS by 20-22Z tomorrow. Expect SW winds of 10-14 kts with gusts up to 15-20 kts tomorrow afternoon. No operationally significant clouds or weather expected through Monday. For the rest of southern Nevada, northwest Arizona and southeast California...Diurnal trends expected through today. Increasing southwest winds tomorrow afternoon mainly remaining below 20 kts. No operationally significant clouds or weather expected through Monday. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && SHORT TERM...Wolcott LONG TERM....Guillet AVIATION.....Kryston For more forecast information...see us on our webpage: http://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.
Two people 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 | 2018-04-23 | 89 | Male | Outside/Open Areas | Direct |
| Heat, Las Vegas Valley | 2018-04-23 | 63 | Male | Outside/Open Areas | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2018Every state in 2018This day in weather historyWarnings in Nevada, April 2018
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: 745735.