Weather Alert in Pennsylvania
Special Weather Statement issued February 11 at 6:35PM EST by NWS Pittsburgh PA
AREAS AFFECTED: Mercer; Venango; Forest; Lawrence; Butler; Clarion; Jefferson; Armstrong; Westmoreland Ridges; Fayette Ridges; Indiana; Higher Elevations of Indiana; Eastern Preston; Eastern Tucker
DESCRIPTION: Upslope snow showers along the higher elevations of western Pennsylvania and northern West Virginia can impact area travel through Thursday. Some instances of snow north of Allegheny County will also be possible. Some of these showers may be moderate in intensity at times and can reduce visibility and lead to accumulation on roadways. Total accumulations between 1-3 inches are expected with localized amounts approaching 4 inches possible, mainly along west-facing slopes.
INSTRUCTION: N/A
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Weather Topic: What are Cumulus Clouds?
Home - Education - Cloud Types - Cumulus Clouds
Next Topic: Drizzle
Cumulus clouds are fluffy and textured with rounded tops, and
may have flat bottoms. The border of a cumulus cloud
is clearly defined, and can have the appearance of cotton or cauliflower.
Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall,
becoming cumulus congestus and possibly the even taller cumulonimbus clouds.
When cumulus clouds become taller, they have a greater chance of producing precipitation.
Next Topic: Drizzle
Weather Topic: What is Evaporation?
Home - Education - Precipitation - Evaporation
Next Topic: Fog
Evaporation is the process which returns water from the earth
back to the atmosphere, and is another crucial process in the water cycle.
Evaporation is the transformation of liquid into gas, and it happens because
molecules are excited by the application of energy and turn into vapor.
In order for water to evaporate it has to be on the surface of a body of water.
Next Topic: Fog
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