Weather Alert in Pennsylvania
Flood Warning issued February 21 at 4:13PM EST until February 21 at 9:00PM EST by NWS Pittsburgh PA
AREAS AFFECTED: Armstrong, PA
DESCRIPTION: * WHAT...Flooding caused by an ice jam continues. * WHERE...Northern Armstrong County in west central Pennsylvania, near the Wattersonville area and potentially downriver to Lock number 8 along the Allegheny River. * WHEN...Until 900 PM EST. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Depending on ice behavior, any release of the ice jam could result in sudden rises of water, leading to a rapid flooding situation. * ADDITIONAL DETAILS... - At 357 PM EST, Emergency management reported an ice jam near the warned area. Flooding is occurring at campgrounds along the Allegheny riverbank, and additional flooding is possible if the ice jam breaks. - Some locations that will experience flooding include...the Wattersonville area and potentially downriver to Lock number 8 along the Allegheny River. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks.
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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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