Weather Alert in California
Winter Storm Warning issued February 17 at 2:25AM PST until February 18 at 12:00PM PST by NWS San Diego CA
AREAS AFFECTED: San Bernardino County Mountains; Riverside County Mountains
DESCRIPTION: * WHAT...Heavy snow expected. Additional snowfall through Wednesday morning of 6 to 12 inches from 5000 to 6000 feet, 12 to 18 inches from 6000 to 7000 feet, locally exceeding 24 inches above 8000 feet. The most widespread and heaviest snowfall is expected for late tonight into Wednesday morning. A snow level around 5000 feet will fall to 3500 to 4500 feet Wednesday morning. Southwest winds of 25 to 35 mph will gust to 60 mph with isolated gusts to 75 mph. * WHERE...Riverside County Mountains and San Bernardino County Mountains. * WHEN...Until noon PST Wednesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Tuesday morning and evening commutes. Very strong winds could cause extensive tree damage.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
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Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
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
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