Weather Alert in California

Recent Locations: Vallejo, CA  

Winter Storm Warning issued March 13 at 1:39AM PDT until March 13 at 11:00PM PDT by NWS Sacramento CA

AREAS AFFECTED: Shasta Lake Area / Northern Shasta County; Burney Basin / Eastern Shasta County; Mountains Southwestern Shasta County to Western Colusa County

DESCRIPTION: * WHAT...For the Winter Storm Warning Above 3000 feet, additional snow accumulations up to 8 inches. For the Winter Storm Watch Above 2000 feet, heavy snow possible. Total snow accumulations of 1 to 2 feet possible. Winds could gust as high as 50 mph. * WHERE...Burney Basin / Eastern Shasta County, Mountains Southwestern Shasta County to Western Colusa County, and Shasta Lake Area / Northern Shasta County. * WHEN...For the Winter Storm Warning, until 11 PM PDT this evening. For the Winter Storm Watch, from 11 PM PDT tonight through Friday evening. * IMPACTS...Difficult travel conditions from chain controls, road closures, and low visibility due to the combination of wind and heavy snow expected. Hazardous conditions will impact the morning and afternoon commutes today and Friday. * ADDITIONAL DETAILS...For the Warning, heaviest snowfall expected through this morning. For the Watch, heaviest snowfall expected late tonight through midday Friday.

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 Fractus Clouds?

Home - Education - Cloud Types - Fractus Clouds

Fractus Clouds Next Topic: Freezing Rain

A fractus cloud (scud) is a fragmented, tattered cloud which has likely been sheared off of another cloud. They are accessory clouds, meaning they develop from parent clouds, and are named in a way which describes the original cloud which contained them.

Fractus clouds which have originated from cumulus clouds are referred to as cumulus fractus, while fractus clouds which have originated from stratus clouds are referred to as stratus fractus. Under certain conditions a fractus cloud might merge with another cloud, or develop into a cumulus cloud, but usually a fractus cloud seen by itself will dissipate rapidly.

They are often observed on the leading and trailing edges of storm clouds, and are a display of wind activity.

Next Topic: Freezing Rain

Weather Topic: What is Graupel?

Home - Education - Precipitation - Graupel

Graupel Next Topic: Hail

Graupel is a form of precipitation that is created by atmospheric conditions which cause supercooled water droplets to contact snow crystals and freeze to their surface.

Sometimes known as soft hail or snow pellets, graupel is delicate and easily destroyed by touch. Whereas hail usually falls during severe weather, graupel doesn't require such conditions to form, and can form in mild precipitation similar to situations which produce snowfall.

Next Topic: Hail