Weather Alert in California
Winter Storm Warning issued February 16 at 4:27AM 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. Through Tuesday morning, snowfall of 4 to 8 inches is expected from 5500 to 6000 feet, 8 to 14 inches from 6000 to 7000 feet, and locally 2 to 3 feet above 7500 feet. Southwest winds will gust to 45 to 55 mph. Snow levels will rise to 6500 to 7500 feet late this morning, then fall to 5000 to 5500 feet for late tonight into Tuesday. Another round of more widespread precipitation is expected for Tuesday night into Wednesday morning with additional snowfall of 3 to 6 inches from 5000 to 6000 feet, 6 to 12 inches from 6000 to 7000 feet, and 12 to 18 inches above 7000 feet. The snow level will fall to 3500 to 4500 feet for Wednesday afternoon. Southwest winds for Tuesday night through Wednesday afternoon will gust to 55 to 75 mph on the desert slopes of the mountains. * WHERE...Riverside County Mountains and San Bernardino County Mountains. * WHEN...From 10 AM this morning to noon PST Wednesday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday evening and Tuesday morning 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 is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
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