Weather Alerts for California

Recent Locations: Delphi Falls, NY Clarkston, GA Saratoga, CA

1. Extreme Heat Warning for: Coalinga - Avenal; Fresno-Clovis; West Side Mountains South of 198; Buena Vista; Bakersfield; South End San Joaquin Valley; Fresno-Tulare Foothills; South End Sierra Foothills

2. Extreme Heat Warning for: Cuyama Valley; Santa Clarita Valley; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Valley; Santa Barbara County Interior Mountains; Western Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana 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; Los Angeles County San Gabriel Valley

3. Extreme Heat Warning for: Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Los Angeles County Inland Coast including Downtown Los Angeles; Eastern Santa Monica Mountains Recreational Area

4. Extreme Heat Warning for: Western Siskiyou County; Central Siskiyou County

5. Flash Flood Warning for: Mariposa, CA; Tuolumne, CA

6. Flood Advisory for: Kern, CA

7. Flood Advisory for: Los Angeles, CA

8. Flood Advisory for: Mariposa, CA

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

10. Flood Advisory for: Tulare, CA

11. Flood Advisory for: Tulare, CA

12. Flood Watch for: Greater Lake Tahoe Area; Greater Lake Tahoe Area; Greater Reno-Carson City-Minden Area; Northern Washoe County

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

14. Flood Watch for: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP

15. Heat Advisory for: Lake Casitas; Ojai Valley; Central Ventura County Valleys

16. Heat Advisory for: West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Southeast San Joaquin Valley; Kern River Valley

17. Red Flag Warning for: Shasta-Trinity National Forest in Siskiyou County; Umpqua National Forest; Western Rogue Basin including the Illinois Valley; Eastern Rogue Valley

18. Red Flag Warning for: Trinity

19. Red Flag Warning for: Western Klamath National Forest; Central Siskiyou County Including Shasta Valley; Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley; Siskiyou Mountains; Southern Oregon Cascades; Klamath Basin and the Fremont-Winema National Forest; South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties

20. Red Flag Warning for: Western Klamath National Forest; Central Siskiyou County Including Shasta Valley; Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley; Siskiyou Mountains; Southern Oregon Cascades; Klamath Basin and the Fremont-Winema National Forest; South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties

21. Special Weather Statement for: Kings Canyon NP

22. Special Weather Statement for: Lassen-Eastern Plumas-Eastern Sierra Counties; Greater Reno-Carson City-Minden Area

23. Special Weather Statement for: Lassen-Eastern Plumas-Eastern Sierra Counties; Greater Reno-Carson City-Minden Area; Northern Washoe County

24. Special Weather Statement for: Riverside County Mountains; San Diego County Mountains; San Diego County Deserts

25. Special Weather Statement for: Yosemite NP outside of the valley

26. Special Weather Statement for: Yosemite NP outside of the valley

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

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Weather Topic: What is Fog?

Home - Education - Cloud Types - Fog

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