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 Cirrocumulus Clouds?
Home - Education - Cloud Types - Cirrocumulus Clouds
Next Topic: Cirrostratus Clouds
Cirrocumulus clouds form at high altitudes (usually around 5 km)
and have distinguishing characteristics displayed in a fine layer of
small cloud patches. These small cloud patches are sometimes referred to as
"cloudlets" in relation to the whole cloud formation.
Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the
water droplets in the cloud freeze into ice crystals and the cloud becomes a
cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud
formations generally pass rapidly.
Next Topic: Cirrostratus Clouds
Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
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