Weather Alerts for California
1. Extreme Heat Warning for: Apple and Lucerne Valleys
2. Extreme Heat Warning for: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
3. 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
4. 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
5. Extreme Heat Warning for: Indian Wells Valley; Mojave Desert Slopes; Mojave Desert
6. 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
7. Extreme Heat Warning for: West Side Mountains north of 198; Mariposa Madera Foothills
8. Extreme Heat Warning for: Western Siskiyou County; Central Siskiyou County
9. Flood Advisory for: Fresno, CA
10. Flood Advisory for: Inyo, CA
11. Heat Advisory for: Catalina and Santa Barbara Islands; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches
12. Heat Advisory for: Lake Casitas; Ojai Valley; Central Ventura County Valleys
13. Heat Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties
14. Heat Advisory for: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling
15. Heat Advisory for: North Bay Interior Mountains; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park
16. Heat Advisory for: North Central and Southeast Siskiyou County; Northeast Siskiyou and Northwest Modoc Counties; Modoc County; South Central Oregon Cascades; Siskiyou Mountains and Southern Oregon Cascades; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County
17. Heat Advisory for: Northern Humboldt Interior; Southern Humboldt Interior; Northwestern Mendocino Interior; Southeastern Mendocino Interior
18. Heat Advisory for: Northern Trinity; Southern Trinity; Northeastern Mendocino Interior; Northern Lake County; Southern Lake County
19. Heat Advisory for: Palos Verdes Hills
20. Heat Advisory for: San Bernardino and Riverside County Valleys-The Inland Empire
21. Heat Advisory for: San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains
22. Heat Advisory for: San Diego County Inland Valleys
23. Heat Advisory for: San Luis Obispo County Inland Central Coast; Santa Barbara County Inland Central Coast
24. Heat Advisory for: Santa Ana Mountains and Foothills; Orange County Inland
25. Heat Advisory for: Santa Cruz Mountains
26. Heat Advisory 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
27. Heat Advisory for: South Central Siskiyou County
28. 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
29. Red Flag Warning for: Cuyama Valley; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains
30. Red Flag Warning for: Fort Tejon
31. Red Flag Warning for: Santa Clarita Valley; 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
32. Special Weather Statement for: Kings Canyon NP; Sequoia NP
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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
Weather Topic: What are Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
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