Las Vegas and its surrounding regions are bracing for a significant weather system. A potent Pacific storm is set to bring a substantial amount of moisture, leading to heavy snowfall in the high Sierra and considerable rain across the Owens Valley. The storm is expected to last from today through Tuesday night, paving the way for cooler, drier conditions by Thanksgiving Day, as reported by the National Weather Service Las Vegas.
According to the National Weather Service Las Vegas, the Southern Sierra will see snowfall mounting to 1-2 feet at elevations of 7000-8500 feet and up to 3-6 feet near the Sierra Crest. The Owens Valley is forecasted to receive 1-3 inches of rain, potentially leading to flooding or debris flow concerns, especially near recent wildfire burn scars. As the storm develops, light precipitation is also expected to spread beyond the I-15 corridor, with the Spring Mountains catching the southern edge of what is described as an atmospheric river, although any significant accumulations should remain above the upper reaches of Kyle and Lee Canyon roads.
For travelers and residents alike, this weather event may lead to disruptions. Wind speeds across the region are due to increase on Tuesday afternoon with gusts predicted in the range of 25-35 mph. These conditions, paired with the extensive low clouds, will lead to reduced visibility and potential travel delays. While temperatures are set to rise on Tuesday as southwest winds mix the boundary layer, they will drop by about 5 degrees after the storm passes, making for a cooler Wednesday, as reported by the National Weather Service.
The clearing of the skies is anticipated by Thanksgiving Day, with near-normal temperatures and dry conditions for those celebrating the holiday. However, a weak Southern California cutoff low approaches the area this weekend, raising the possibility of light and widely beneficial precipitation. Skies will remain predominately cloudy, lingering moisture may still affect road conditions with wet surfaces.
Aviation forecasts for Harry Reid International Airport suggest light wind patterns initially, shifting to breezy southwesterly winds with gusts of 20-30 knots by late Tuesday morning. Pilots should anticipate 30-40% chances of light rain affecting flights in the afternoon and evening hours, as per the National Weather Service. Similar conditions, including potential light rain and breezy winds, are also expected at other southern Nevada, northwestern Arizona, and southeastern California terminals. Spotter activation has been encouraged to report any significant weather or impacts as per usual procedures.
