Weather Alerts for California
1. High Surf Advisory for: Coastal Del Norte; Northern Humboldt Coast; Southwestern Humboldt; Mendocino Coast
2. High Surf Advisory for: San Diego County Coastal Areas
3. High Surf Advisory for: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
4. High Surf Advisory for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches; Ventura County Beaches
5. High Wind Warning for: Central Siskiyou County
6. High Wind Warning for: Coastal Del Norte
7. High Wind Warning for: Modoc County; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County
8. Wind Advisory for: Del Norte Interior; Southwestern Humboldt; Northern Humboldt Interior; Southern Humboldt Interior
9. Wind Advisory for: Interstate 5 Corridor
10. Wind Advisory for: Northern Humboldt Coast
11. Wind Advisory for: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains
12. Wind Advisory for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
13. Wind Advisory for: Surprise Valley California; Greater Reno-Carson City-Minden Area; Northern Washoe County
14. Winter Weather Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
15. Winter Weather Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties
16. Winter Weather Advisory for: Mono
17. Winter Weather Advisory for: Northern Trinity
18. Winter Weather Advisory for: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
19. Winter Weather Advisory for: Western Siskiyou County; South Central Siskiyou County; North Central and Southeast Siskiyou County; South Central Oregon Cascades; Siskiyou Mountains and Southern Oregon Cascades
20. Winter Weather Advisory for: Yosemite NP outside of the valley; Upper San Joaquin River
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Current U.S. National Radar--Current
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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 is Fog?
Home - Education - Cloud Types - Fog
Next Topic: Fractus Clouds
Fog is technically a type of stratus cloud, which lies along the
ground and obscures visibility.
It is usually created when humidity in the air condenses into tiny water droplets.
Because of this, some places are more prone to foggy weather, such as regions
close to a body of water.
Fog is similar to mist; both are the appearance of water droplets suspended in
the air, but fog is the term applied to the condition when visibility is less than 1 km.
Next Topic: Fractus Clouds
Weather Topic: What is Freezing Rain?
Home - Education - Precipitation - Freezing Rain
Next Topic: Graupel
Freezing rain is a condition where precipitation which has fallen in the form of
water droplets reaches temperatures which are below freezing and freezes upon
coming into contact
with surface objects. The result of this precipitation is a glaze of ice which
can be damaging to plants and man-made structures. A severe onset of freezing
rain which results in a very thick glaze of ice is known as an ice storm.
Next Topic: Graupel
