Weather Alerts for California

Recent Locations: Monterey Park, CA

1. Air Quality Alert for: San Bernardino and Riverside County Valleys-The Inland Empire

2. Red Flag Warning for: Eastern Portion of Shasta/Trinity NF; Burney Basin and Northeast Plateau in Shasta County Including Northwest Lassen NF north of Lassen NP; Southeast Edge Shasta/Trinity NF and Western Portions of Tehama/Glenn RU; Northern Sierra Foothills from 1000 to 3000 Ft. Includes Nevada-Yuba-Placer RU and Anador-Eldorado RU; Northern Sierra Including Lassen NP and Plumas and Lassen NF/S West of the Sierra Crest - West of Evans Peak/Grizzly Peak/Beckworth Peak; Eastern Mendocino NF

3. Red Flag Warning for: Lower Middle Klamath; Hoopa; Van Duzen/Mad River; W Mendocino NF/E Mendocino Unit; Trinity

4. Red Flag Warning for: Lower Middle Klamath; Hoopa; Van Duzen/Mad River; W Mendocino NF/E Mendocino Unit; Trinity

5. Red Flag Warning for: Upper Smith

6. Red Flag Warning for: Western Klamath National Forest; Central Siskiyou County Including Shasta Valley; Siskiyou County from the Cascade Mountains East and South to Mt Shasta

7. Red Flag Warning for: Western Klamath National Forest; Central Siskiyou County Including Shasta Valley; Siskiyou County from the Cascade Mountains East and South to Mt Shasta

8. Special Weather Statement for: Western Siskiyou County

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

Weather Topic: What are Altocumulus Clouds?

Home - Education - Cloud Types - 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

Weather Topic: What are Cirrocumulus Clouds?

Home - Education - Cloud Types - Cirrocumulus Clouds

Next Topic: Cirrostratus Clouds

Cirrocumulus clouds form at high altitudes (usually around 5 km) and have distinguishing characteristics displayed in a fine layer of small cloud patches. These small cloud patches are sometimes referred to as "cloudlets" in relation to the whole cloud formation.

Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the water droplets in the cloud freeze into ice crystals and the cloud becomes a cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud formations generally pass rapidly.

Next Topic: Cirrostratus Clouds