One person 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.
One person 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 Jun 28, 6:04 PM PST, 5 hours 56 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 704 PM PDT Wed Jun 28 2023 .SYNOPSIS...Weak troughing aloft will remain in place through Thursday, with the only chance for precipitation being Thursday in eastern Lincoln County. A ridge will build in the second half of the week into the weekend which will bring continued dry weather and rapidly warming temperatures. Dangerous heat is expected for many locations of California, southern Nevada, and southern Mohave County over the holiday weekend. && .UPDATE...Storm activity has diminished across our northwestern area, with only some showers lingering. Expect precipitation chances to end by 10PM. Isolated showers/storms expected to develop in eastern Lincoln County tomorrow afternoon. Brief downpours, gusty winds, and lightning will be possible with this activity. Otherwise, another quiet day around the region as temperatures creep up, especially in the western half of the CWA. Warming accelerates Friday and through the weekend. Moderate-to-high HeatRisk has prompted an Excessive Heat Watch Saturday through Monday for most of the area. && .DISCUSSION....Tonight through the 4th of July. The upper level trough that have been sitting over the Western US the past week will finally shift east and be replaced by an anomalously strong ridge. A significant warm up with some of the hottest temperatures so far this summer are expected with the incoming ridge. Dangerous heat is expected this week. Thursday will be a transition day as the trough starts its eastward shift. By Thursday afternoon, the trough axis will move into western Arizona. With the positioning of the trough, there is a low chance for showers and thunderstorms in eastern Lincoln County Thursday afternoon. Significant dry air will prevent widespread development, however terrain driven precipitation is possible with cold upper level temperatures within the center of the upper level system. Instability fields are actually more supportive for thunderstorms tomorrow than what develops this afternoon where the trough axis is currently centered in east-central California, so a few more storms are possible tomorrow compared to today. HREF probabilities for impactful thunderstorm winds suggests that sudden gusty outflow winds over 30 MPH will be possible (30%-50%) with any convection that develops, which would make sense given the dry low levels. Any showers or storms that develop will diminish after sunset. Thursday will make the beginning of a significant warm up as heights build over the region. High temperatures on Thursday will jump about 5 degrees in western areas, with only a degree or two warm up expected in eastern Clark, Lincoln, and western Arizona as the trough will still be influencing the overall weather. For those keeping tabs on Las Vegas's first 100 degree day of 2023, probabilities for hitting 100 on Thursday are low (20%) and the forecast high temperature has dropped to 99 degrees. Without any wind for mixing, would favor this solution as well. Temperatures increase rapidly across the entire region Friday and will continue through the weekend. The probability for Las Vegas, NV hitting 100 degrees on Friday is high (90%). By this weekend, the ridge will be overhead and above normal temperatures are expected, with heat danger jumping into the High Risk category (level 3 out of 4) for all valley areas outside of the Southern Great Basin and the Arizona Strip. Given this is the first taste of extreme heat, how quickly temperatures warm, and it's a holiday weekend- issued an Excessive Heat Watch for all areas where heat will be dangerous for much of the local population, those who are sensitive to heat, anyone visiting from a cooler climate, and those with outdoor plans. This heat should be taken seriously and precautions need to be taken to prevent heat-related illnesses. Avoid outdoor activity during the hottest parts of the day (10am-4pm), drink extra water, take breaks in cool or shady locations, and wear light colored, light weight clothing. Temperatures will very slowly decrease the beginning of next week as as the ridge shifts east. The Excessive Heat Watch includes Monday as high temperatures on Monday will only be a degree or two cooler than Sunday and the ridge will remain nearby. Heat danger will remain in the High risk (level 3 of 4) or Moderate risk (level 2 of 4) for most locations. By Tuesday, temperatures and heat risk will continue to decrease, though there is a large spread in ensemble temperatures as models resolve how quickly the ridge breaks down. Anyone with July 4th plans should watch the forecast as changes to the temperatures and heat danger level may change as we get better resolutions from the long range ensembles. Outside of the temperature impacts, no other impactful weather is expected Friday through early next week. No precipitation is expected and winds will remain light or below impactful levels through the period. && .AVIATION...For Harry Reid...Winds will remain light and variable through later this afternoon when winds will pick up and shift to the southwest. As these winds settle in from the southwest, it will be possible for an occasional rogue gust to make it to the terminal area. These gusts would be around 15 knots and would be from a southeasterly to southwesterly direction. Winds will remain from a southwesterly direction for much of the overnight period. For the rest of southern Nevada, northwest Arizona and southeast California...KHND and KVGT will follow typical diurnal directional trends with sustained speeds of 12 knots or less. KBIH will see wind directions vary between westerly and northerly throughout the period. Vicinity showers will pop up in the higher terrain around KBIH and will have the potential to result in 20-30 knot wind gusts. These showers and associated wind gusts will diminish later this evening. KDAG will favor a more westerly direction with 20-25 knot gusts this afternoon. KEED and KIFP will favor a southerly direction with breezy afternoon winds decreasing after sunset.&& .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && UPDATE...Woods DISCUSSION...Nickerson AVIATION...Stessman 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 | 2023-06-29 | 52 | Male | Outside/Open Areas | 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, June 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: 1111755.