The National Weather Service in Las Vegas anticipates the first widespread precipitation event of the winter to hit the desert, bringing light rain, mountain snow, and a chill across the Mojave. According to the NWS weather update, these changes are part of a substantial weather pattern transformation expected to take place through the start of next week.
Starting today, the weather remains calm and mostly clear, however, by Saturday, a shortwave trough moving down from the Pacific Northwest is set to mix things up the cut-off low will gather moisture from the Pacific, and by Sunday morning, the system is forecasted to linger around Monterey Bay before making its way inland on Monday afternoon. Despite the slower-than-expected movement, the forecast remains unchanged with a high probability that the Las Vegas Metro area could see some light snow accumulations come Monday morning. "Widespread precipitation expected across much of the region," says the report from NWS.
Travelers should especially take note as snow levels are anticipated to dip near valley floors in the Great Basin and Owens Valley while hovering around 3500-4500 feet in the Mojave Desert and northwestern Arizona. Substantial snow accumulations are on the cards for the Spring Mountains, with a 75% chance of 12+ inches of snow, potentially impacting key travel routes such as Interstate 15 and Highway 95. These conditions could turn roads slick, mixing rain with accumulated surface oils after a prolonged dry spell, affecting the drive through the region this Sunday and Monday.
Preventive measures are already being taken with Winter Storm Watches placed across the eastern Sierra Slopes, Owens Valley, and in other counties, these spans from Saturday morning through Tuesday morning. The precision of these predictions might still waver about timing but with every forecast update comes a clearer picture, these winter advisories or warnings will be refined to specific elevations and timings as the low-pressure system approaches.
Aviation forecasts for Harry Reid International Airport indicate variable winds today, expected to favor a northeast to east direction this afternoon, with wind speeds likely staying below 7 knots. High clouds will begin to sweep over the region, signaling the approaching shift, while the rest of southern Nevada, northwest Arizona, and southeast California will also experience winds under 10 knots with increasing cloud coverage. As the situation evolves, spotters are urged to report any significant weather or impacts in line with standard procedures.
