Weather Alerts for California

Recent Locations: Centerview, MO Millville, CA Twain, CA

Current Alerts for Twain, CA: High Wind Warning

1. Air Quality Alert for: Imperial County Southwest; Imperial County West; Imperial Valley

2. Freeze Watch for: Western Siskiyou County

3. High Wind Warning for: Lassen-Eastern Plumas-Eastern Sierra Counties

4. High Wind Warning for: Mojave Desert Slopes

6. High Wind Watch for: Santa Susana Mountains

7. High Wind Watch for: Western Santa Monica Mountains Recreational Area; Western San Gabriel Mountains and Highway 14 Corridor

8. Wind Advisory for: Central Siskiyou County

9. Wind Advisory for: Coastal Del Norte; Del Norte Interior

10. Wind Advisory for: Indian Wells Valley; Mojave Desert

11. Wind Advisory for: Modoc County

12. Wind Advisory for: San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains; Apple and Lucerne Valleys; Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning

13. Wind Advisory for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range

14. Wind Advisory for: Santa Susana Mountains

15. Wind Advisory for: Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains

16. Wind Advisory for: Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor

17. Wind Advisory for: Surprise Valley California; Northern Washoe County

18. Wind Advisory for: Western Antelope Valley Foothills; Antelope Valley

19. Wind Advisory for: Western Mojave Desert

20. Winter Weather Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area

21. Winter Weather Advisory for: Modoc County

22. Winter Weather Advisory for: Northern Trinity

23. Winter Weather Advisory for: West Slope Northern Sierra Nevada

24. Winter Weather Advisory for: Western Siskiyou County

25. 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 Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog