Weather Alert in California
Winter Storm Watch issued February 14 at 11:47AM PST until February 19 at 9:00AM PST by NWS San Diego CA
AREAS AFFECTED: San Bernardino County Mountains
DESCRIPTION: * WHAT...Two rounds of heavy snow possible. For first round Monday, 4-9 inches expected between 6000-7000 ft, 9-14 inches expected 7000-8000 ft, and up to 20 inches above 8000 ft. Winds could gust 60 to 70 mph, with the strongest winds on the desert slopes of the mountains. There may be breaks in snow showers or lighter snow during the day Tuesday, with a second round of heavy snow and gusty winds Wednesday into Thursday morning. * WHERE...San Bernardino County Mountains. * WHEN...From Monday morning through Thursday morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Visibilities may drop below 1/4 mile due to falling and blowing snow. Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...For the first round Monday, snow levels will start around 6500 ft and fall to near 5000 ft. Lower snow levels possible for the next round on Wednesday.
INSTRUCTION: Monitor the latest forecasts for updates on this situation.
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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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