Weather Alert in Pennsylvania
Special Weather Statement issued February 6 at 9:35PM EST by NWS State College PA
AREAS AFFECTED: Cambria; Somerset; Bedford
DESCRIPTION: A band of heavy snow showers and squalls has been observed along an approaching Arctic cold front in western Pennsylvania. This band is projected to move into Somerset, southern Cambria, and western Bedford Counties between 1030 PM and 1230 AM tonight. Snow squalls quickly reduce visibility and cause rapid accumulations of snow. The reduced traction and blinding visibility of a snow squall can make travel very dangerous very quickly. Consider avoiding or delaying travel while the band of heavy snow moves through the area. Rapid changes in visibility and potentially slick roads may lead to accidents. If you must travel, please use extreme caution and allow plenty of stopping distance. Avoid braking suddenly.
INSTRUCTION: N/A
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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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