Weather Alerts for California
1. Air Quality Alert for: Riverside County Mountains; Coachella Valley; San Gorgonio Pass Near Banning
2. Red Flag Warning for: Eastern Portion of Shasta/Trinity NF; Burney Basin and Northeast Plateau in Shasta County Including Northwest Lassen NF north of Lassen NP; Southeast Edge Shasta/Trinity NF and Western Portions of Tehama/Glenn RU; Northern Sierra Foothills from 1000 to 3000 Ft. Includes Nevada-Yuba-Placer RU and Anador-Eldorado RU; Northern Sierra Including Lassen NP and Plumas and Lassen NF/S West of the Sierra Crest - West of Evans Peak/Grizzly Peak/Beckworth Peak; Eastern Mendocino NF
3. Red Flag Warning for: Lower Middle Klamath; Hoopa; Van Duzen/Mad River; W Mendocino NF/E Mendocino Unit; Trinity
4. Red Flag Warning for: Lower Middle Klamath; Hoopa; Van Duzen/Mad River; W Mendocino NF/E Mendocino Unit; Trinity
5. Red Flag Warning for: Upper Smith
6. 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
7. 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
8. Special Weather Statement for: Central Siskiyou County; North Central and Southeast Siskiyou County
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North America Water Vapor (Moisture)
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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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