Weather Alerts for California

Recent Locations: Joshua Tree, CA  
Current Alerts for Joshua Tree, CA: Flash Flood Warning Flood Advisory
Heat Advisory

1. Excessive Heat Warning for: Apple and Lucerne Valleys

2. Excessive Heat Warning for: Coachella Valley; San Diego County Deserts

3. Excessive Heat Warning for: Cuyama Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley

4. Excessive Heat Warning for: Death Valley National Park; Western Mojave Desert; Western Clark and Southern Nye County

5. Excessive Heat Warning for: East Bay Interior Valleys; Eastern Santa Clara Hills; East Bay Hills; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park

6. Excessive Heat Warning for: Eastern Mojave Desert, Including the Mojave National Preserve; Northeast Clark County; Las Vegas Valley; Southern Clark County

7. Excessive Heat Warning for: Indian Wells Valley; Mojave Desert Slopes; Mojave Desert

8. Excessive Heat Warning for: San Gorgonio Pass Near Banning

9. Excessive Heat Warning for: West Side Mountains north of 198; 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; West Side Mountains South of 198; 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; Mariposa-Madera Lower Sierra; Fresno-Tulare Foothills; Fresno-Tulare Lower Sierra; South End Sierra Foothills; Yosemite Valley; San Joaquin River Canyon; Kern River Valley

10. Fire Weather Watch for: Modoc County Except for the Surprise Valley; South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties

11. Fire Weather Watch for: Surprise Valley California; Eastern Lassen County; Northern Washoe County

12. Flash Flood Warning for: San Bernardino, CA

13. Flash Flood Warning for: San Bernardino, CA

14. Flood Advisory for: Fresno, CA

15. Flood Advisory for: Madera, CA

16. Flood Advisory for: Mariposa, CA; Tuolumne, CA

17. Flood Advisory for: Mono, CA

18. Flood Advisory for: Riverside, CA

19. Flood Advisory for: Riverside, CA

20. Flood Advisory for: Riverside, CA; San Diego, CA

21. Flood Advisory for: San Bernardino, CA

22. Flood Advisory for: San Diego, CA

23. Flood Advisory for: San Diego, CA

24. Flood Watch for: Mono; Mineral and Southern Lyon Counties

25. Heat Advisory for: Carquinez Strait and Delta

26. Heat Advisory for: Lake Casitas; Ojai Valley; Central Ventura County Valleys; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Los Angeles County San Gabriel Valley

27. Heat Advisory for: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Northern San Joaquin Valley; Northeast Foothills/Sacramento Valley; Motherlode

28. Heat Advisory for: Northern Trinity; Southern Trinity; Northwestern Mendocino Interior; Northeastern Mendocino Interior; Southeastern Mendocino Interior; Northern Lake County

29. Heat Advisory for: San Bernardino and Riverside County Valleys-The Inland Empire

30. Heat Advisory for: San Bernardino County Mountains; Riverside County Mountains

31. Heat Advisory for: San Diego County Inland Valleys

32. Heat Advisory for: San Diego County Mountains

33. Heat Advisory for: Santa Clarita Valley; Santa Lucia Mountains; Southern Salinas Valley; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Santa Susana Mountains

34. Heat Advisory for: Santa Ynez Valley; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range

35. Heat Advisory for: Sonoma Coastal Range; North Bay Interior Mountains; North Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Southern Salinas Valley/Arroyo Seco and Lake San Antonio

36. Heat Advisory for: Southern Lake County

37. Red Flag Warning for: Modoc County Except for the Surprise Valley; South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties

38. Special Weather Statement for: Joshua Tree NP West; Joshua Tree NP East

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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 are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

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

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