Low pressure moving in from the Pacific brought heavy snow to the Spring Mountains.
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The episode as NWS VEF wrote it up.
Low pressure moving in from the Pacific brought heavy snow to the Spring Mountains.
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 Feb 1, 3:07 AM PST, 3 hours 53 minutes earlier.
Area Forecast Discussion...CORRECTED National Weather Service Las Vegas NV 307 AM PST Thu Feb 1 2024 .SYNOPSIS...An active weather pattern begins today as the first of at least 2 systems impact the western United States. Gusty winds are expected to develop across the area today with a wave of precipitation spreading west to east. Winter weather impacts are likely above 6000 feet, especially in the Sierra, White, and Spring Mountains, with light-to-moderate rain in our lower elevations. A brief break is expected this weekend before another wet system brings impacts the region next week. && .SHORT TERM...Today and Friday. Wet and unsettled weather conditions are underway tonight with doppler radar showing a good portion of California receiving rain from an initial wave associated with an Atmospheric River. We are beginning to see radar echoes appearing over the Sierra with light radar returns across parts of Inyo and San Bernardino counties. Snow is falling above 7000 feet in the Sierra where a Winter Storm Warning is in effect. The heaviest precipitation will spread west to east across the region today and tonight with lighter amounts expected on Friday. Rain totals across the area by sunset Friday are generally expected to be in the range of one quarter to three quarters of an inch but locally between 1 and 2 inches are possible. The HREF gives a 60 percent chance of rainfall amounts exceeding an inch in parts of the Morongo Basin today - particularly in the Morongo Valley area where the heaviest rain is forecast between 10 am and 4 pm today. Due to the increased risk 0f flooding in this area, a Flood Watch has been issued for the Morongo Basin effective from 6 am this morning through 10 pm this evening. The watch highlights the Morongo Valley as the focus area for the heaviest accumulating rain. Noteworthy snowfall amounts are expected in some of our local CWA mountains through Friday afternoon where Winter Storm Warnings and Winter Weather Advisories are posted. Elevations between 5000 and 8000 feet in the Sierra could see 8-12 inches with 1-2 foot amounts possible above 8000 feet. 3-8 inch amounts are expected in elevated passes such as Westgard Pass in the White Mountains and Lida Summit in Esmeralda County. In the Spring Mountains, snow is expected to begin after sunrise today and continue through the night into Friday. The heaviest snowfall is expected to fall between 10 am this morning through about 10 pm this evening. Total snow amounts of 8-18 inches are forecast above 6000 feet. In Lincoln County, the higher snow amounts are expected in the mountains however, 1-3 inch amounts are possible on Highway 93 north of Pioche and 2-4 inch amounts are possible over Oak Springs Summit on Highway 93 west of Caliente and along the elevated portions of Highway 319 east of Panaca. Windy conditions are expected across much of the area today with southerly gusts of 25-35 mph. Enough to create areas of blowing dust but rain could be a mitigating factor that limits this concern. Windy conditions continue through the night across our southern desert areas and linger into Friday in the western regions of the Mojave Desert. We should see about a 10-12 degree drop in temperatures today when compared to Wednesday with little change expected on Friday. Other then isolated light shower activity Friday night - for all intensive purposes, the first AR event will come to an end. .LONG TERM...Saturday through Wednesday. A shortwave ridge will set up across the southwestern United States on Saturday, resulting in a brief break in precipitation and cloud cover. The forecast for the end of the weekend into the start of the work week is less clear. Long range ensembles continue to indicate the arrival of a digging longwave trough, which will bring with it another round of anomalous moisture as it aims an atmospheric river at the western CONUS. Just before pushing inland, the system will close off near northern California. As mentioned in the previous forecast discussion, the act of this system closing off prior to moving inland will likely result in stunted forward movement. As it gradually moves inland late Sunday into Monday, it will continue to usher moisture into the southwestern United States. Reinforcing shots of energy along the longwave trough will continue to funnel moisture into the region through midweek. The bulk of this moisture will result in widespread moderate-to-heavy rainfall across southern California... largely west of the Sierra Nevada Mountain Range. Though the eastern Sierra Slopes will receive another round of winter weather, the amount of moisture that makes it up and over (or around) the range will determine how much precipitation makes it into the southern Great Basin and Mojave Desert. Spillover that does occur will favor Inyo County - particularly the higher elevations including the White Mountains and Panamints. The Weather Prediction Center's Winter Storm Severity Index - Probabilities (WPC's WSSI-P) has increased to over 90% chance of moderate winter-related impacts along the eastern Sierra Slopes, the Owens Valley, and mountains of Death Valley National Park, with over 20% chance of moderate winter impacts spreading eastward into Esmeralda and southern Nye counties. Forecast precipitation amounts further east remain uncertain. The NBMv4.2 continues to show a stark difference in the Spring Mountains between the 10th percentile snowfall accumulations and the 90th percentile (several inches vs. several feet). Keep an eye on the forecast, especially if you have outdoor recreation or travel plans next week, as confidence in details will increase as we move through the weekend. && .AVIATION...For Harry Reid...The incoming Pacific Storm will bring rain and ceilings BKN-OVC 060 by around 18Z followed by periods of rain persisting until about 06Z this evening. Ceilings will likely lower to BKN-OVC 020-030 by 21Z and there is a 40% probability ceilings fall to BKN-OVC 007-009 between 01Z and 08Z this evening. Periods of Visibility 2-3SM in rain and fog can be expected from early this afternoon through late this evening. Cloud bases will gradually lift Friday but ceilings BKN-OVC 020-030 should persist through 18Z Friday. Prevailing winds should be from the S-SW with gusts around 20KT this afternoon. Occasional southeast components will be possible this evening along with some brief erratic winds as steady rain transitions to showers. For the rest of southern Nevada, northwest Arizona and southeast California...An incoming Pacific Storm will bring widespread rain, low ceilings, mountain obscuration and turbulence to the region today and tonight then will pull away on Friday with gradually improving conditions. Strong southerly winds gusting 35-45 kts in Inyo and Esmeralda counties early this morning will spread across parts of southern Nevada and northwest Arizona with gusts 25-35 kts possible in areas today. During the period of widespread precipitation ceilings will fall below 3 kft AGL, with the potential at most TAF sites of ceilings falling below 1 kft AGL. Visibility 3SM or less can be expected in rain and fog. && .SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report any significant weather or impacts according to standard operating procedures. && SHORT TERM...Salmen LONG TERM...Varian AVIATION...Adair 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 heavy snow. Local standard time, as filed.
The Bristlecone Trail SNOTEL estimated 11 inches of new snow.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2024Every state in 2024This day in weather historyWarnings in Nevada, February 2024
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: 1162686.