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: Grand Valley; Central Gunnison and Uncompahgre River Basin
DESCRIPTION: * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 21 expected. For the Freeze Watch, sub-freezing temperatures as low as 24 possible. * WHERE...Central Gunnison and Uncompahgre River Basin and Grand Valley. * 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 are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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