Weather Alert in Pennsylvania
Flood Watch issued February 19 at 11:08AM EST until February 20 at 1:00PM EST by NWS Pittsburgh PA
AREAS AFFECTED: Venango; Forest; Lawrence; Butler; Clarion; Jefferson; Armstrong; Westmoreland; Westmoreland Ridges; Fayette; Fayette Ridges; Indiana; Higher Elevations of Indiana
DESCRIPTION: An ice jam may cause water to infiltrate the lowlands along rivers. * WHAT...Flooding caused by ice jams is possible. * WHERE...Portions of northwest, southwest, and western Pennsylvania, including the following areas, in northwest Pennsylvania, Forest, Jefferson PA and Venango. In southwest Pennsylvania, Fayette, Higher Elevations of Fayette, Higher Elevations of Westmoreland and Lawrence. In western Pennsylvania, Armstrong, Butler, Clarion, Higher Elevations of Indiana, Indiana and Westmoreland. * WHEN...Through Friday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood prone locations. * ADDITIONAL DETAILS... - Ice jam potential. - http://www.weather.gov/safety/flood
INSTRUCTION: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
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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
Weather Topic: What are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
Next Topic: Cumulus Clouds
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