Weather Alert in Ohio
Snow Squall Warning issued February 6 at 9:49PM EST until February 6 at 10:15PM EST by NWS Pittsburgh PA
AREAS AFFECTED: Jefferson, OH; Allegheny, PA; Armstrong, PA; Beaver, PA; Butler, PA; Indiana, PA; Washington, PA; Westmoreland, PA; Brooke, WV; Hancock, WV
DESCRIPTION: At 949 PM EST, a hazardous snow squall was located along a line from 10 miles northwest of Blairsville to over Wintersville, or along a line from 10 miles west of Homer City to 5 miles west of Steubenville, moving south at 35 mph. HAZARD...Intense bursts of heavy snow and gusty winds leading to blowing snow and rapidly falling visibility. Wind gusts up to 35 mph. SOURCE...Radar indicated. IMPACT...Travel will become difficult and potentially hazardous within minutes. Locations impacted include... Pittsburgh, Penn Hills, Mount Lebanon, Bethel Park, Ross Township, McCandless Township, Monroeville, Cranberry, Moon Township, Weirton, McKeesport, Steubenville, Butler, Franklin Park, East Liverpool, Aliquippa, Beaver Falls, Monaca, Vandergrift and Kittanning. This includes the following highways... Parkway North between mile markers 1 and 13. Interstate 79 in Pennsylvania between mile markers 52 and 90. Interstate 376 between mile markers 31 and 84. Pennsylvania Turnpike between mile markers 17 and 63.
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 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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