Weather Alert in Pennsylvania
Winter Weather Advisory issued February 25 at 1:15AM EST until February 25 at 1:00PM EST by NWS Pittsburgh PA
AREAS AFFECTED: Venango; Forest; Clarion; Jefferson; Westmoreland Ridges; Fayette Ridges; Indiana; Higher Elevations of Indiana; Eastern Preston; Eastern Tucker
DESCRIPTION: * WHAT...Snow expected. Total snow accumulations between 2 to 4 inches with locally more possible within the Laurel Highlands into the West Virginia higher terrain. Gusty wind up to 30 mph is possible with ridge tops seeing up to 40 mph outside of the Wind Advisory area. * WHERE...Portions of northwest Pennsylvania, the higher terrain of southwest Pennsylvania, and the higher terrain of northern West Virginia. * WHEN...Until 1 PM EST this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Wednesday morning commute.
INSTRUCTION: Please report snow or ice accumulations by calling 412-262-1988, posting to the NWS Pittsburgh Facebook page, or using X @NWSPittsburgh.
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North America Water Vapor (Moisture)
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Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
Weather Topic: What is Condensation?
Home - Education - Precipitation - Condensation
Next Topic: Contrails
Condensation is the process which creates clouds, and therefore
it is a crucial process in the water cycle.
Condensation is the change of matter from a state of gas into a state of liquid,
and it happens because water molecules release heat into the atmosphere and
become organized into a more closely packed structure, what we might see as
water droplets.
Water is always present in the air around us as a vapor, but it's too small for
us to see. When water undergoes the process of condensation it becomes organized
into visible water droplets. You've probably seen condensation happen before on the
surface of a cold drink!
Next Topic: Contrails
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