Weather Alert in Idaho
Wind Advisory issued February 18 at 10:59AM MST until February 18 at 8:00PM MST by NWS Pocatello ID
AREAS AFFECTED: Shoshone/Lava Beds; Lower Snake River Plain; Eastern Magic Valley; Southern Hills/Albion Mountains; Raft River Region
DESCRIPTION: * WHAT...West winds 20 to 30 mph with gusts up to 50 mph. Locally higher gusts are possible in favored terrain areas. * WHERE...Eastern Magic Valley, Shoshone/Lava Beds, Lower Snake River Plain, Raft River Region, and Southern Hills/Albion Mountains. * WHEN...Until 8 PM MST this evening. * IMPACTS...Gusty winds could make driving difficult, especially for high profile vehicles. Unsecured objects may be blown around. Pockets of blowing and drifting snow are possible where snow left on the ground exists after it has ended.
INSTRUCTION: Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects.
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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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