Weather Alert in Massachusetts
Winter Weather Advisory issued February 19 at 12:13PM EST until February 21 at 7:00AM EST by NWS Boston/Norton MA
AREAS AFFECTED: Western Franklin; Eastern Franklin; Northern Worcester; Central Middlesex County; Western Essex; Eastern Essex; Southeast Middlesex; Northwest Middlesex County
DESCRIPTION: * WHAT...Mixed precipitation expected. Total snow and sleet accumulations between 3 and 6 inches and ice accumulations of a light glaze. * WHERE...Much of Massachusetts north of the Massachusetts Turnpike. * WHEN...From 10 AM Friday to 7 AM EST Saturday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Friday evening commute.
INSTRUCTION: Slow down and use caution while traveling.
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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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