Weather Alert in Massachusetts
Severe Thunderstorm Warning issued September 6 at 4:20PM EDT until September 6 at 5:15PM EDT by NWS Boston/Norton MA
AREAS AFFECTED: Essex, MA; Middlesex, MA; Suffolk, MA
DESCRIPTION: SVRBOX The National Weather Service in Boston/Norton has issued a * Severe Thunderstorm Warning for... Northwestern Suffolk County in eastern Massachusetts... Southwestern Essex County in northeastern Massachusetts... Northeastern Middlesex County in northeastern Massachusetts... * Until 515 PM EDT. * At 420 PM EDT, a severe thunderstorm was located over Marlborough, moving east at 40 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to trees and power lines. * Locations impacted include... Boston, Cambridge, Lynn, Newton, Somerville, Framingham, Waltham, Malden, Medford, Revere, Peabody, Arlington, Everett, Billerica, Woburn, Chelsea, Chelmsford, Andover, Natick, and Watertown.
INSTRUCTION: For your protection move to an interior room on the lowest floor of a building.
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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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