Weather Alert in California
Fire Weather Watch issued May 20 at 11:49PM PDT until May 22 at 11:00PM PDT by NWS Hanford CA
AREAS AFFECTED: West Side Hills; San Joaquin Valley; Central Sierra Foothills; Southern Sierra Foothills
DESCRIPTION: * AFFECTED AREA...Fire weather zone 579 West Side Hills. Fire weather zone 580 San Joaquin Valley. Fire weather zone 590 Central Sierra Foothills. Fire weather zone 591 Southern Sierra Foothills. * WIND...West to Northwest winds 15 to 20 mph with gusts reaching25 to 35 mph. Ridge-top wind gusts reaching 35 mph. * HUMIDITY...5 to 15 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.
INSTRUCTION: A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
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Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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