Weather Alert in California

Recent Locations: San Francisco, CA  
Current Alerts for San Francisco, CA: Special Weather Statement

Winter Storm Warning issued March 30 at 12:21PM PDT until April 1 at 11:00PM PDT by NWS Sacramento CA

AREAS AFFECTED: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada

DESCRIPTION: * WHAT...Heavy snow above 3500 feet. Total snow accumulations 1 to 4 feet possible, locally up to 5 feet over peaks. Total snow accumulations of 6-12 inches between 3500-4000 feet. Winds could gust as high as 55-65 mph. * WHERE...West Slope Northern Sierra Nevada and Western Plumas County/Lassen Park. * WHEN...From 5 PM this afternoon to 11 PM PDT Tuesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...Heaviest snowfall expected Monday, with snowfall rates up to 2 inches an hour. Snow levels fall 5000-6500 feet, lowering to around 3000-4000 feet by Monday evening, then falling to around 3000 feet by early Tuesday. Light snowfall accumulations of 1 to 6 inches are possible down to 3000 feet.

INSTRUCTION: Check the latest road conditions from Caltrans online at quickmap.dot.ca.gov or dial 5 1 1. Persons should delay travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Consider taking a winter storm kit along with you and anything else that would help you survive in case you become stranded.

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Weather Topic: What are Stratus Clouds?

Home - Education - Cloud Types - Stratus Clouds

Stratus Clouds Next Topic: Wall Clouds

Stratus clouds are similar to altostratus clouds, but form at a lower altitude and are identified by their fog-like appearance, lacking the distinguishing features of most clouds.

Stratus clouds are wider than most clouds, and their base has a smooth, uniform look which is lighter in color than a nimbostratus cloud. The presence of a stratus cloud indicates the possibility of minor precipitation, such as drizzle, but heavier precipitation does not typically arrive in the form of a stratus cloud.

Next Topic: Wall Clouds

Weather Topic: What are Altocumulus Clouds?

Home - Education - Cloud Types - Altocumulus Clouds

Altocumulus Clouds Next Topic: Altostratus Clouds

Similar to cirrocumulus clouds, altocumulus clouds are characterized by cloud patches. They are distinguished by larger cloudlets than cirrocumulus clouds but are still smaller than stratocumulus clouds.

Altocumulus clouds most commonly form in middle altitudes (between 2 and 5 km) and may resemble, at times, the shape of a flying saucer. These uncommon formations, called altocumulus lenticularis, are created by uplift in the atmosphere and are most often seen in close proximity to mountains.

Next Topic: Altostratus Clouds

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