Weather Alert in New York
Winter Weather Advisory issued February 20 at 1:30AM EST until February 21 at 10:00AM EST by NWS Burlington VT
AREAS AFFECTED: Northern Franklin; Southeastern St. Lawrence; Southwestern St. Lawrence; Grand Isle; Western Franklin; Orleans; Essex; Western Chittenden; Lamoille; Caledonia; Washington; Western Addison; Western Rutland; Eastern Franklin; Eastern Chittenden
DESCRIPTION: * WHAT...Snow expected. Total snow accumulations between 3 and 7 inches. * WHERE...Portions of northern New York and Vermont. * WHEN...From 10 AM this morning to 10 AM EST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Friday evening commute. * ADDITIONAL DETAILS...Sections of the Northeast Kingdom are less likely to see snow arrive by the evening commute. Travel impacts are less likely across this area. Initially wet snow and 1"/hr rates are possible this evening before trending lighter. Isolated power outages could occur.
INSTRUCTION: Slow down and use caution while traveling. For the latest on road conditions in Vermont, visit https://newengland511.org and for New York, visit https://511ny.org.
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North America Water Vapor (Moisture)
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Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
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
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