Weather Alerts for California
1. Air Quality Alert for: Imperial Valley
2. Air Quality Alert for: Imperial Valley
3. Excessive Heat Warning for: Indian Wells Valley; Mojave Desert
4. Excessive Heat Warning for: Kern River Valley
5. Excessive Heat Warning for: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley; Mariposa Madera Foothills; Fresno-Tulare Foothills; South End Sierra Foothills
6. Excessive Heat Warning for: Mojave Desert Slopes
7. Excessive Heat Warning for: Owens Valley
8. Excessive Heat Warning for: Shasta Lake Area / Northern Shasta County; Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley; Mountains Southwestern Shasta County to Western Colusa County; Northeast Foothills/Sacramento Valley; Motherlode
9. Excessive Heat Warning for: West Side Mountains north of 198; West Side Mountains South of 198
10. Excessive Heat Watch for: Apple and Lucerne Valleys
11. Excessive Heat Watch for: San Luis Obispo County Interior Valleys; Eastern Antelope Valley Foothills; Antelope Valley
12. Excessive Heat Watch for: Western Antelope Valley Foothills
13. Heat Advisory for: Northern Lake County; Southern Lake County
14. Heat Advisory for: Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park
15. Heat Advisory for: Sonoma Coastal Range; North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; East Bay Hills
16. Heat Advisory for: Southern Salinas Valley/Arroyo Seco and Lake San Antonio
17. Lake Wind Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
18. Wind Advisory for: Interstate 5 Corridor
19. Wind Advisory for: Mojave Desert Slopes
20. Wind Advisory for: Northern Ventura County Mountains
21. Wind Advisory for: Santa Barbara County Southeastern Coast; Santa Ynez Mountains Eastern Range
22. Wind Advisory for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range
23. Wind Advisory for: Western Antelope Valley Foothills
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 Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
Weather Topic: What is Condensation?
Home - Education - Precipitation - Condensation
Next Topic: Contrails
Condensation is the process which creates clouds, and therefore
it is a crucial process in the water cycle.
Condensation is the change of matter from a state of gas into a state of liquid,
and it happens because water molecules release heat into the atmosphere and
become organized into a more closely packed structure, what we might see as
water droplets.
Water is always present in the air around us as a vapor, but it's too small for
us to see. When water undergoes the process of condensation it becomes organized
into visible water droplets. You've probably seen condensation happen before on the
surface of a cold drink!
Next Topic: Contrails
