Weather Alerts for California

Recent Locations: Riverside, CA  
Current Alerts for Riverside, CA: Wind Advisory

1. Air Quality Alert for: Coachella Valley; San Gorgonio Pass Near Banning

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

3. Beach Hazards Statement for: San Diego County Coastal Areas; Orange County Coastal

4. Frost Advisory for: Northern Trinity; Southern Trinity; Northwestern Mendocino Interior; Northeastern Mendocino Interior; Northern Lake County

5. High Surf Advisory for: Catalina and Santa Barbara Islands; Ventura County Beaches; Malibu Coast; Los Angeles County Beaches

6. High Surf Advisory for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches

7. High Wind Warning for: Antelope Valley

8. High Wind Warning for: Interstate 5 Corridor

9. High Wind Warning for: Mojave Desert Slopes

10. High Wind Warning for: San Miguel and Santa Rosa Islands; Santa Cruz and Anacapa Islands

11. High Wind Warning for: Western Antelope Valley Foothills

12. Special Weather Statement for: South End San Joaquin Valley; Tehachapi; Mojave Desert Slopes; Mojave Desert

13. Wind Advisory for: Catalina and Santa Barbara Islands

14. Wind Advisory for: Central Ventura County Valleys; Western Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Southeastern Ventura County Valleys

15. Wind Advisory for: Cuyama Valley

16. Wind Advisory for: Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin

17. Wind Advisory for: Eastern San Gabriel Mountains

18. Wind Advisory for: Imperial County Southwest

19. Wind Advisory for: Joshua Tree NP West; Salton Sea; Imperial County Southeast; Imperial County West; Imperial Valley

20. Wind Advisory for: Lake Casitas

21. Wind Advisory for: Riverside County Mountains; San Diego County Mountains; Coachella Valley; San Diego County Deserts

22. Wind Advisory for: San Bernardino County Mountains; Apple and Lucerne Valleys

23. Wind Advisory for: San Gorgonio Pass Near Banning

24. Wind Advisory for: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley

25. Wind Advisory for: Santa Barbara County Interior Mountains

26. Wind Advisory for: Santa Barbara County Southeastern Coast; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles

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

28. Wind Advisory for: Santa Clarita Valley; Santa Susana Mountains

29. Wind Advisory for: Santa Ynez Mountains Eastern Range

30. Wind Advisory for: South End of the Upper Sierra; Piute Walker Basin; Tehachapi; Indian Wells Valley; Mojave Desert

31. Wind Advisory for: Southern Ventura County Mountains; Northern Ventura County Mountains

32. Wind Advisory for: Western Mojave Desert

33. Wind Advisory for: Western San Gabriel Mountains and Highway 14 Corridor

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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).

Current U.S. National Radar

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

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.

North American Water Vapor Map

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

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

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds