Weather Alerts for California

Recent Locations: Bradley, MI   Piñon Hills, CA  
Current Alerts for Piñon Hills, CA: Heat Advisory

1. Beach Hazards Statement for: Ventura County Beaches; Malibu Coast; Los Angeles County Beaches

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

3. Extreme Heat Warning for: Indian Wells Valley; Mojave Desert Slopes; Mojave Desert

4. Extreme Heat Warning for: San Gorgonio Pass Near Banning

5. Extreme Heat Warning for: Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley

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

7. Heat Advisory for: Cuyama Valley; Santa Ynez Mountains Eastern Range; 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

8. Heat Advisory for: North Central and Southeast Siskiyou County; Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin

9. Heat Advisory for: Northern Humboldt Interior

10. Heat Advisory for: Northern Trinity

11. Heat Advisory for: Riverside County Mountains; San Diego County Mountains

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

13. Heat Advisory for: San Bernardino County Mountains

14. Heat Advisory for: Santa Ynez Mountains Western Range

15. Heat Advisory for: South Central Siskiyou County

16. Heat Advisory for: Surprise Valley California; Lassen-Eastern Plumas-Eastern Sierra Counties; Mineral and Southern Lyon Counties; Greater Reno-Carson City-Minden Area; Western Nevada Basin and Range including Pyramid Lake; Northern Washoe County

17. Heat Advisory 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; Fresno-Tulare Foothills; South End Sierra Foothills

18. Wind Advisory for: Santa Barbara County Southwestern Coast

19. Wind Advisory for: Santa Ynez Mountains Western Range

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Current U.S. National Radar--Current

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Current U.S. National Radar

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North America Water Vapor (Moisture)

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Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Cirrus Clouds Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Contrails Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

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