Weather Alerts for California
1. Air Quality Alert for: Coachella Valley; San Gorgonio Pass Near Banning
2. Freeze Watch for: Western Siskiyou County; Central Siskiyou County
3. High Wind Warning for: Eastern Sierra Slopes of Inyo County; Owens Valley; White Mountains of Inyo County; Death Valley National Park; Esmeralda and Central Nye County
4. Wind Advisory for: Chuckwalla Mountains; Imperial County Southeast
5. Wind Advisory for: Imperial County Southwest
6. Wind Advisory for: Joshua Tree NP West
7. Wind Advisory for: Morongo Basin
8. Wind Advisory for: Riverside County Mountains; San Diego County Mountains; Coachella Valley; San Diego County Deserts
9. Wind Advisory for: Salton Sea; Imperial County West; Imperial Valley
10. Wind Advisory for: San Bernardino County Mountains; Apple and Lucerne Valleys
11. Wind Advisory for: San Gorgonio Pass Near Banning
12. Wind Advisory for: Surprise Valley California; Northern Washoe County
13. Winter Storm Warning for: Greater Lake Tahoe Area; Mono; Greater Lake Tahoe Area
14. Winter Storm Warning for: Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP
15. Winter Storm Warning for: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
16. Winter Storm Warning for: Yosemite NP outside of the valley; Upper San Joaquin River
17. Winter Weather Advisory for: Del Norte Interior; Northern Humboldt Interior; Southern Humboldt Interior; Northern Trinity; Southern Trinity; Northeastern Mendocino Interior
18. Winter Weather Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties
19. Winter Weather Advisory for: Western Siskiyou County
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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 Stratus Clouds?
Home - Education - Cloud Types - 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
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