Weather Alert in Pennsylvania
Snow Squall Warning issued March 14 at 12:40AM EDT until March 14 at 1:45AM EDT by NWS State College PA
AREAS AFFECTED: Lycoming, PA; Tioga, PA
DESCRIPTION: The National Weather Service in State College PA has issued a * Snow Squall Warning for... North central Lycoming County in north central Pennsylvania... Southeastern Tioga County in north central Pennsylvania... * Until 145 AM EDT. * At 1237 AM EDT, a dangerous snow squall was located over Buttonwood, moving east at 65 mph. HAZARD...Intense bursts of heavy snow. Gusty winds leading to blowing snow and rapidly falling visibility. Wind gusts up to 35 mph. SOURCE...Radar and webcams. IMPACT...Travel will become difficult and potentially dangerous within minutes. This snow squall will affect US-15 between Trout Run and Blossburg. Locations impacted include... Blossburg, Arnot, Trout Run, Buttonwood, and Liberty.
INSTRUCTION: Slow Down! Rapid changes in visibility and road conditions are expected with this dangerous snow squall. Be alert for sudden whiteout conditions.
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Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
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