Weather Alert in California
Winter Storm Warning issued February 17 at 10:21AM PST until February 19 at 10:00PM PST by NWS San Diego CA
AREAS AFFECTED: San Bernardino County Mountains; Riverside County Mountains
DESCRIPTION: * WHAT...Heavy snow expected. Additional snowfall through Wednesday of 6 to 12 inches from 5000 to 6000 feet, 12 to 20 inches from 6000 to 7000 feet, locally exceeding 24 inches above 7500 feet. Snow levels around 5000 feet will fall to 3500 to 4500 feet Wednesday morning. Southwest winds of 25 to 35 mph will gust to 65 mph with isolated gusts to 75 mph on the desert mountain slopes are expected. An additional 3 to 8 inches of snow Thursday. * WHERE...Riverside County Mountains and San Bernardino County Mountains. * WHEN...Until 10 PM PST Thursday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. Very strong winds could cause extensive tree damage. * ADDITIONAL DETAILS...Potentially damaging winds expected tonight into Wednesday, strongest winds will be on the desert mountain slopes into the foothills and locally into the Lucerne Valley. For early Wednesday morning and again Thursday, there is a chance of accumulating snow on I-15 at the summit of the Cajon Pass.
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 is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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