Two people died in Las Vegas of cold-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 cold-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 Dec 8, 7:48 PM PST, 4 hours 12 minutes earlier.
Area Forecast Discussion National Weather Service Las Vegas NV 748 PM PST Thu Dec 8 2022 .SYNOPSIS...Mild weather and cooler temperatures will continue through the end of the work week before a weekend weather system brings gusty winds, increased precipitation chances, and colder temperatures to the region. && .UPDATE...Tranquil weather will continue over our region overnight while a band of high clouds moves overhead associated with a trough brushing northern. The clouds show be mostly gone by sunrise Friday with another cool and mostly sunny day in store for our forecast area. Attention is primarily on expected Pacific System moving inland Saturday and Sunday. A change was made to the valid time of the Winter Storm Watch for the Spring Mountains and Sheep Range. It is now in effect from 4 AM PST Sunday morning until 10 PM PST Sunday evening. Moisture and precipitation with the incoming system will be intercepted by the High Sierra Saturday and will not spread over the southern Nevada mountains until early Sunday morning. No other immediate changes are needed to the forecast trends detailed in the previous discussion. && .PREV DISCUSSION... 100 PM PST Thu Dec 8 2022 .SHORT TERM...through Friday. Relatively quiet weather is expected for the next two days as we remain under dry west-northwesterly flow aloft. A weak shortwave will move through the area overnight into tomorrow morning, but it is not expected to result in any major impacts. The most likely impact associated with this disturbance will be a dusting of snow in the higher elevations of the Sierra. Temperatures will remain a couple of degrees below average through the end of week before we cool off even more early next week. .LONG TERM...Saturday through next Thursday. An upper-level cut-off low originating in the Gulf of Alaska and an associated atmospheric river (AR) will impact the area over the weekend. Currently, cluster analysis shows good agreement that a trough will move through the region this weekend. However, for Days 3-5, EOF #1 shows that 40-50% of the variance is associated with interensemble discrepancies regarding the position of the trough. The variability in the position of the trough during this period is due to differences between ensemble members regarding the speed of the trough as it approaches and moves through the area. The latest ECMWF and GFS ensemble mean solutions have been gradually trending slower with this trough. This means that the window for potential impacts will occur slightly later and may last slightly longer. The higher elevations of Inyo County are expected to see the largest impacts from this system as it moves through. Precipitation will begin to impact the eastern slopes of the Sierra and the rest of Inyo County on Saturday morning with the potential to persist into Monday morning. Snow levels in the Sierra and White Mountains will start off around 6,000 feet on Saturday morning before crashing to 3,000 feet by Sunday morning, and dropping under 2,000 feet early Monday morning. In addition to the snow and rain, wind gusts in excess of 40 mph will also be possible, especially at higher elevations. These winds may result in blowing dust and/or snow, both of which can reduce visibility and make for hazardous driving conditions. Depending on the orientation of the 500 mb trough relative to the Sierra, the potential for westerly downslope winds exists in the Owens Valley. These winds may make for hazardous travel conditions, especially along Highway 395. The rest of our forecast area will see precipitation chances increase from west to east beginning Saturday morning in Inyo County and wrapping up early Monday morning in Mohave County. Exact QPF amounts will depend on the evolution of the AR after it slams into the Sierra on Saturday. The deterministic ECMWF and GFS have the Sierra initially blocking a significant portion of the moisture before the AR redevelops across the southern portion of our forecast area. The deterministic GFS has consistently been more aggressive than the ECMWF with this redevelopment. The GEFS shows a a 60-80% chance of the AR redeveloping with IVT values greater than 250 kg/(ms) across northwestern Arizona and southern California on Sunday. For southern Nevada the GEFS shows a 30-50% chance of IVT values greater than 250 kg/(ms) on Sunday. If this band develops further south we would see less precipitation across southern Nevada. However if it develops further to the north it would result in more precipitation across southern Nevada. The strength of the AR will also influence precipitation amounts. Outside of precipitation related impacts, we will also see gusty south/southwesterly winds kick up across the forecast area beginning Saturday afternoon. These gusty winds will continue into Sunday evening. The strongest winds will be located in the western Mojave Desert, eastern Sierra Slopes, eastern Inyo County/Death Valley area, south central Nye County, southern Clark County, the panhandle of Lincoln County, and Mohave County north of I-40. There is a fairly decent chance of seeing gusts in excess of 40 mph in the aforementioned areas, with the issuance of a wind product likely for some if not all of these forecast zones. Beyond Monday, temperatures will be well below normal for the entire forecast area. A trend that will stick around through the end of the week. && .AVIATION...For Harry Reid...Winds will be light through the TAF period, favoring diurnal trends, with speeds generally below 8 kts. These conditions will likely persist into Saturday morning. Clear skies expected through the day today, but around 02Z, clouds will increase to SCT-BKN aoa 20 kft, clearing around sunrise Friday morning. Lower CIGS below 10 kft are possible on Sunday. For the rest of southern Nevada, northwest Arizona and southeast California...Winds will be light through the TAF period, favoring diurnal trends, with speeds generally less than 8 kts. SCT-BKN aoa 20 kft around KBIH, increasing west-to-east through the remainder of the late-afternoon and evening to impact the remaining TAF sites. Skies will clear once again around sunrise Friday morning. Lower CIGs and mountain obscurations are likely over the weekend. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && UPDATE...Adair DISCUSSION...Stessman AVIATION...Czyzyk 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 cold/wind chill. Local standard time, as filed.
Two people died of cold-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 |
|---|---|---|---|---|---|
| Cold/Wind Chill, Las Vegas Valley | 2022-12-09 | 59 | Female | Outside/Open Areas | Indirect |
| Cold/Wind Chill, Las Vegas Valley | 2022-12-10 | 86 | Male | Permanent Home | Indirect |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2022Every state in 2022This day in weather historyWarnings in Nevada, December 2022
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: 1066996.