Weather Alert in Colorado
Freeze Warning issued April 18 at 3:01PM MDT until April 19 at 9:00AM MDT by NWS Grand Junction CO
AREAS AFFECTED: Paradox Valley/Lower Dolores River; Four Corners/Upper Dolores River; Animas River Basin
DESCRIPTION: * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 18 expected. For the Freeze Watch, sub-freezing temperatures as low as 18 possible. * WHERE...Animas River Basin, Four Corners/Upper Dolores River, and Paradox Valley/Lower Dolores River. * WHEN...For the Freeze Warning, from midnight tonight to 9 AM MDT Saturday. For the Freeze Watch, from late Saturday night through Sunday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
INSTRUCTION: Take steps now to protect tender plants from the cold.
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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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