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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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 is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
