Weather Alerts for California
1. Air Quality Alert for: Imperial County Southwest; Imperial County West; Imperial Valley
2. Freeze Watch for: Western Siskiyou County
3. High Wind Warning for: Lassen-Eastern Plumas-Eastern Sierra Counties
4. High Wind Warning for: Mojave Desert Slopes
5. High Wind Warning for: Mono
6. High Wind Watch for: Santa Susana Mountains
7. High Wind Watch for: Western Santa Monica Mountains Recreational Area; Western San Gabriel Mountains and Highway 14 Corridor
8. Wind Advisory for: Central Siskiyou County
9. Wind Advisory for: Coastal Del Norte; Del Norte Interior
10. Wind Advisory for: Indian Wells Valley; Mojave Desert
11. Wind Advisory for: Modoc County
12. Wind Advisory for: San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains; Apple and Lucerne Valleys; Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
13. Wind Advisory for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range
14. Wind Advisory for: Santa Susana Mountains
15. Wind Advisory for: Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains
16. Wind Advisory for: Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor
17. Wind Advisory for: Surprise Valley California; Northern Washoe County
18. Wind Advisory for: Western Antelope Valley Foothills; Antelope Valley
19. Wind Advisory for: Western Mojave Desert
20. Winter Weather Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
21. Winter Weather Advisory for: Modoc County
22. Winter Weather Advisory for: Northern Trinity
23. Winter Weather Advisory for: West Slope Northern Sierra Nevada
24. Winter Weather Advisory for: Western Siskiyou County
25. Winter Weather Advisory for: Yosemite NP outside of the valley; Upper San Joaquin River
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North America Water Vapor (Moisture)
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Weather Topic: What is Condensation?
Home - Education - Precipitation - 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
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
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