Earlier this afternoon, Wednesday, Dec. 18, the National Weather Service issued a Winter Weather Advisory for the Southern California Mountains, including the Hill, from Thursday morning, Dec. 19, into Thursday night. The NWS forecasts snow to begin falling late Thursday morning and accumulation between 3 and 5 inches by evening. During Thursday night, additional accumulation of 2 to 4 inches is possible. Snow should taper off Friday morning and perhaps sunny, with temperatures near 50º F Friday afternoon. The weekend forecast is also for sunny and 50s. A cold low pressure system moving in from the northwest will bring periods of snow and gusty winds to the San Bernardino County mountains, the Riverside County mountains and the San Diego County mountains. Within the advisory area, the NWS includes the following locations: Aguanga, Anza, Garner Valley, Idyllwild, Mountain Center, Pine Cove, Pinyon Pines, and Vista Grande. The Winter Weather Advisory remains in effect from 7 a.m. Thursday, Dec. 19 to 1 a.m. Friday, Dec. 20. * Snow levels — lowering to between 3,500 and 4,000 feet by Thursday morning. * Timing — snow showers will begin late Wednesday night and continue through Thursday before tapering off late Thursday night. * Snow accumulations — generally a dusting below 4,000 feet; 2 to 4 inches between 4,000 and 6,000 feet; and 5 to 7 inches on the highest peaks. * Winds — southwest to west 20 to 30 mph with gusts to 50 mph and isolated gusts to 60 mph near mountain ridge tops. * Visibility — locally reduced at times due to blowing snow and fog. * Impacts — residents and travelers into the mountains should be prepared for hazardous winter weather conditions and possible road closures. If possible carry chains and take extra food and clothing. * Outlook — snow showers may linger through Friday but the snow level will rise, which will confine any additional accumulation to the highest peaks. Precautionary/preparedness actions — a winter weather advisory means that periods of snow will cause travel difficulties. Be prepared for slippery roads and limited visibilities and use caution while driving.
