Weather Alert in New York
Special Weather Statement issued February 19 at 1:15AM EST by NWS Albany NY
AREAS AFFECTED: Southern Herkimer; Southern Fulton; Montgomery; Schoharie; Western Albany; Western Greene; Western Ulster
DESCRIPTION: Untreated wet ground surfaces from previous rain and melted snow will likely freeze overnight as temperatures drop into the 20s. This will allow for areas of black ice to form on untreated ground surfaces. Motorists and pedestrians should expect areas of icy travel conditions overnight through Thursday morning, especially on untreated ground surfaces and secondary roadways. Elevated roadways such as bridges and overpasses as well as highway on and off ramps will be particularly vulnerable to black ice formation and slippery travel conditions through Thursday morning.
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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