Weather Alert in Pennsylvania
Severe Thunderstorm Warning issued March 31 at 6:12PM EDT until March 31 at 7:15PM EDT by NWS Pittsburgh PA
AREAS AFFECTED: Mercer, PA
DESCRIPTION: SVRPBZ The National Weather Service in Pittsburgh has issued a * Severe Thunderstorm Warning for... Mercer County in northwestern Pennsylvania... * Until 715 PM EDT. * At 612 PM EDT, severe thunderstorms were located along a line from 29 miles northwest of Greenville to 30 miles north of Salem, or along a line from 34 miles northwest of Sharpsville to 27 miles west of Sharon, moving east at 65 mph. HAZARD...70 mph wind gusts and small hail. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. * Locations impacted include... Hermitage, Sharpsville, Greenville, Stoneboro, Sandy Lake, Clark, Jamestown, Fredonia, Jackson Center, New Lebanon, Sheakleyville and Maurice K Goddard State Park.
INSTRUCTION: Anyone outdoors should move to shelter inside a well-built structure and stay away from windows. These storms are capable of producing widespread damaging winds. Report severe weather to your nearest law enforcement agency or the National Weather Service office in Pittsburgh PA.
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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
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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