Weather Alerts for California
1. 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
2. Wind Advisory for: Coachella Valley
3. Wind Advisory for: Imperial County Southwest
4. Wind Advisory for: Morongo Basin
5. Wind Advisory for: Riverside County Mountains; San Diego County Mountains; San Diego County Deserts
6. Wind Advisory for: Salton Sea; Imperial County West; Imperial Valley
7. Wind Advisory for: San Bernardino County Mountains; Apple and Lucerne Valleys
8. Wind Advisory for: San Gorgonio Pass Near Banning
9. Wind Advisory for: Surprise Valley California; Northern Washoe County
10. Winter Weather Advisory for: Del Norte Interior; Northern Humboldt Interior; Southern Humboldt Interior; Northern Trinity; Southern Trinity; Northeastern Mendocino Interior
11. Winter Weather Advisory for: Greater Lake Tahoe Area; Mono; Greater Lake Tahoe Area
12. Winter Weather Advisory for: Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP
13. Winter Weather Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties
14. Winter Weather Advisory for: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
15. Winter Weather Advisory for: Western Siskiyou County
16. Winter Weather Advisory for: Yosemite NP outside of the valley; Upper San Joaquin River
Want more detail? Get the Complete 7 Day and Night Detailed Forecast!
Current U.S. National Radar--Current
The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).
National Weather Forecast--Current
The Current National Weather Forecast and National Weather Map are shown below.
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 Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
Weather Topic: What are Contrails?
Home - Education - Cloud Types - Contrails
Next Topic: Cumulonimbus Clouds
A contrail is an artificial cloud, created by the passing of an
aircraft.
Contrails form because water vapor in the exhaust of aircraft engines is suspended
in the air under certain temperatures and humidity conditions. These contrails
are called exhaust contrails.
Another type of contrail can form due to a temporary reduction in air pressure
moving over the plane's surface, causing condensation.
These are called aerodynamic contrails.
When you can see your breath on a cold day, it is also because of condensation.
The reason contrails last longer than the condensation from your breath is
because the water in contrails freezes into ice particles.
Next Topic: Cumulonimbus Clouds