National Weather Service United States Department of Commerce
Click a location below for detailed forecast.

Last Map Update: Sat, May. 25, 2019 at 2:49:23 pm PDT

National Weather Service San Francisco Bay Area, CANational Weather Service San Joaquin Valley, CANational Weather Service Las Vegas, NV
National Weather Service Honolulu, HIZoom

National Weather Service NWS Phoenix
National Weather Service Honolulu, HINational Weather Service San Diego, CANational Weather Service San Diego, CA

A weak upper level trough of low pressure combined with lingering moisture and instability will bring scattered showers and isolated thunderstorms across interior sections through this evening, especially the mountains of Ventura and Santa Barbara counties. Any storms that develop today will be capable of producing brief heavy downpours with local roadway flooding as well as small hail. A colder upper level low pressure system will then bring the threat of widespread showers to southwestern California on Sunday, with a slight chance of thunderstorms expected in the mountains. Snow levels will range between 6000 and 7000 feet on Sunday, then lowering to around 5000 feet Sunday evening. Moderate snow accumulations are expected at the resort levels. Rainfall amounts with this system are generally expected to be 0.10 inch to 0.50 inches across coastal and valley areas, with 0.25-1.00 inch possible in the mountains. Roadways will be slippery on Sunday, leading to potential travel delays. Any thunderstorms in the mountains may contain brief heavy rain, small hail, gusty winds and dangerous lightning. Prepare for unusual winter weather driving conditions in the mountains on Sunday.
An unusually cold storm system for late May will likely bring snow and a slight chance of thundersnow to the local mountains on Sunday and Sunday night. A winter weather advisory is in effect for the mountains of Los Angeles and Ventura counties from 6 am Sunday thorugh 3 am Monday. Snow levels are expected to range between 6000 and 7000 feet on Sunday, then lower to between 4500 and 5500 feet on Sunday night. Snow accumulations of 3 to 6 inches will be likely above 6500 feet, with lighter accumulations possibly down to 5000 feet. Gusty southwest winds up to 40 mph could also cause some blowing snow. This late season storm will bring winter weather driving conditions to the local mountains Sunday into Sunday night, with the potential for travel delays this holiday weekend.



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