Weather Alert in California
Winter Weather Advisory issued February 19 at 6:42AM PST until February 19 at 7:00PM PST by NWS Las Vegas NV
AREAS AFFECTED: Eastern Mojave Desert, Including the Mojave National Preserve
DESCRIPTION: * WHAT...Snow expected. Total snow accumulations up to two inches. Winds gusting as high as 45 mph. * WHERE...Eastern Mojave Desert. * WHEN...Until 7 PM PST this evening. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult along Interstate 15 through Mountain Pass.
INSTRUCTION: Slow down and use caution while traveling. Call 1-800-427-7623 for road information.
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North America Water Vapor (Moisture)
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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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