Weather Alerts for Utah
1. Wind Advisory for: Castle Country; San Rafael Swell; South Central Utah; Western Canyonlands; Glen Canyon Recreation Area/Lake Powell
2. Wind Advisory for: Eastern Uinta Mountains
3. Wind Advisory for: Sevier Valley
4. Wind Advisory for: Southwest Utah
5. Wind Advisory for: Western Millard and Juab Counties
6. Wind Advisory for: Western Uinta Basin; Upper Sevier River Valleys; Bryce Canyon Country; Capitol Reef National Park and Vicinity
7. Winter Storm Warning for: Wasatch Mountains I-80 North; Wasatch Mountains South of I-80; Western Uinta Mountains
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North America Water Vapor (Moisture)
This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.
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