Weather Alert in Wyoming
Special Weather Statement issued August 13 at 3:14PM MDT by NWS Riverton WY
AREAS AFFECTED: Green Mountains and Rattlesnake Range; Upper Green River Basin; South Lincoln County; Rock Springs and Green River; Flaming Gorge; East Sweetwater County
DESCRIPTION: This is a special weather statement from the National Weather Service Office in Riverton. * WHAT...Outflow wind gusts 45 to 55 mph. * WHERE...High desert basins and valleys of southwest Wyoming. * WHEN...Through 7 PM Wednesday. * ADDITIONAL DETAILS...Scattered high-based showers and a few thunderstorms will rumble across southwest and portions of central Wyoming through 7 PM. Any of these showers and storms will be capable of producing outflow wind gusts of 45 to 55 mph. Motorists along Interstate 80, US Highway 189, US Highway 191, and US Highway 287 should be prepared for sudden changes in wind speed.
INSTRUCTION: N/A
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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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