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 are Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
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
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