Weather Alert in Pennsylvania
Snow Squall Warning issued February 6 at 10:52PM EST until February 6 at 11:45PM EST by NWS Pittsburgh PA
AREAS AFFECTED: Allegheny, PA; Fayette, PA; Greene, PA; Indiana, PA; Washington, PA; Westmoreland, PA
DESCRIPTION: The National Weather Service in Pittsburgh has issued a * Snow Squall Warning for... Southeastern Allegheny County in southwestern Pennsylvania... Fayette County in southwestern Pennsylvania... Greene County in southwestern Pennsylvania... Southern Washington County in southwestern Pennsylvania... Westmoreland County in southwestern Pennsylvania... Southwestern Indiana County in west central Pennsylvania... * Until 1145 PM EST. * At 1052 PM EST, a hazardous snow squall was located along a line from 14 miles southeast of Black Lick to 5 miles west of Bentleyville, or along a line from 17 miles southeast of Homer City to 9 miles southeast of Washington, moving southeast at 45 mph. HAZARD...Intense bursts of heavy snow and gusty winds leading to blowing snow and rapidly falling visibility. Wind gusts greater than 35 mph. SOURCE...Radar indicated. IMPACT...Travel will become difficult and potentially hazardous within minutes. * Locations impacted include... Greensburg, Washington, Uniontown, Jeannette, Latrobe, Connellsville, Waynesburg, Gastonville, South Park Township, Jefferson Hills, Monessen, Clairton, California, Donora, Mount Pleasant, Scottdale, Monongahela, Charleroi, Irwin and Masontown. This includes the following highways... Interstate 70 in Pennsylvania between mile markers 6 and 15...and between mile markers 19 and 57. Interstate 79 in Pennsylvania between mile markers 1 and 37. Pennsylvania Turnpike between mile markers 67 and 99.
INSTRUCTION: Slow Down! Rapid changes in visibility and road conditions are expected with this dangerous snow squall. Be alert for sudden whiteout conditions. Reduce your speed and turn on headlights! During snow squalls, the visibility may suddenly drop to near zero in whiteout conditions.
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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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