Temperatures reached Excessive Heat Warning levels in Las Vegas. Four people died of heat related causes during and shortly after the event.
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.
Temperatures reached Excessive Heat Warning levels in Las Vegas. Four people died of heat related causes during and shortly after the event.
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 Jun 4, 8:46 AM PST, 2 hours 14 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 946 AM PDT Mon Jun 4 2018 .SYNOPSIS...Hot temperatures will continue through today before slight cooling occurs during the rest of the week. Conditions will remain dry with afternoon southwest breezes developing each day as a broad area of low pressure holds near the West Coast. && .UPDATE... Temperatures continue to rise across the southwest today. Trends this morning indicate we will reach forecasted high temperatures. The excessive heat Warning will remain in effect for much for the Colorado River Valley and portions of Clark County. Death Valley will also experience very high temperatures today relative to normal for this time of year. Excessive heat messaging will continue for today and through the week. && .AVIATION...For McCarran...A light easterly wind will transitions to south-southwest in the early afternoon and overnight. Peak gusts around 25 knots. The sky will remain mostly clear. For the rest of southern Nevada, northwest Arizona and southeast California...VFR conditions expected through the period. Light winds early will become south-southwest 15-25 knots across much of the region this afternoon and evening. && .PREV DISCUSSION... /issued at 206 AM PDT Mon Jun 4 2018/ .SHORT TERM...through Wednesday night. Ridge axis off to our east over the Four Corner/Rocky Mtn states will produce another hot day across the region. Bumped up forecast highs today another one or two degrees based on what occurred yesterday. That one or two degrees justifies the need for an Excessive Heat Warning based off the latest HeatRisk guidance for the Las Vegas Valley, northeast Clark County, Lake Mead Natl Rec Area and the lower Colorado River. The Excessive Heat Warning will run from 11 am PDT/MST - 8 PM PDT/MST. Temperatures in Las Vegas will range from 106-110, the other areas between 109-113. Lowering heights associated with a broad trough of low pressure over Nevada/California and the eastern Pacific will bring relief from the heat on Tuesday and Wednesday. Pattern will be conducive for afternoon south-southwest breezes each afternoon between 10-20 mph, gusts up to 30 mph. .LONG TERM...Thursday through Sunday. Compared to 24 hours ago, agreement among ensemble and operational medium-range guidance has improved, especially during latter portion of the forecast period. Generally, the synoptic pattern remains unchanged with an expansive high over the central US and stationary, broad trough situated off the western US coast. This pattern will direct Pacific disturbances north of the area and keep the forecast area dry through next weekend; however, breezy winds are expected under southwest flow and with systems passing to the north. The next shortwave that will dig far enough south to bring substantial breezes to the southern Great Basin and Mojave Desert region looks to push inland sometime between Saturday and Sunday. Currently, there will be no need for wind headlines. Temperatures late this week will be a few degrees above normal for early June but will increase 5-8 degrees above normal Friday and Saturday as high pressure expands west and winds increase. Temperatures should lower again Sunday as heights fall. Beyond the weekend, the next feature to watch will be, potentially, the first named eastern north Pacific tropical cyclone of the season, "Aletta". Models are hinting at moderate moisture being pulled northward by the TC and advected further north into the southwest along the western periphery of a westward expanding anticyclone. Though probability is very low this far out, we'll keep a very close "eye" on this feature through the week. && .FIRE WEATHER...Well above normal temperatures expected today before temperatures lower several degrees the remainder of the week. Surface winds will increase during the afternoon hours each day but look to remain just shy of Red Flag criteria. Minimum humidity values will fall into the single digits each afternoon, except for elevation above 7000 feet where values will range between 10-15 percent. && && .SPOTTER INFORMATION STATEMENT...Spotters and encouraged to report significant weather or impacts according to standard operating procedures. && UPDATE/AVIATION...Lericos SHORT TERM/FIRE WEATHER...Pierce LONG TERM...Boothe 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 excessive heat. Local standard time, as filed.
Temperatures reached Excessive Heat Warning levels in Las Vegas on the 4th. Four people died of heat related causes from the 4th through the 8th.
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 |
|---|---|---|---|---|---|
| Excessive Heat, Las Vegas Valley | 2018-06-04 | 65 | Male | Outside/Open Areas | Indirect |
| Excessive Heat, Las Vegas Valley | 2018-06-05 | 39 | Male | Outside/Open Areas | Direct |
| Excessive Heat, Las Vegas Valley | 2018-06-06 | 84 | Male | Permanent Home | Direct |
| Excessive Heat, Las Vegas Valley | 2018-06-08 | 59 | Male | Vehicle/Towed Trailer | Indirect |
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, June 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: 762629.