Weather Alert in Pennsylvania
Flood Watch issued February 19 at 11:02AM EST until February 20 at 1:00PM EST by NWS State College PA
AREAS AFFECTED: Cambria; Blair; Huntingdon; Somerset; Bedford; Fulton
DESCRIPTION: * WHAT...Flooding caused by ice jams is possible. * WHERE...A portion of central Pennsylvania, including the following counties, Bedford, Blair, Cambria, Fulton, Huntingdon and Somerset. * 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... - Significant ice breakup on area rivers and creeks has been observed over the last few days as a result of an extended stretch of mild temperatures. Multiple rounds of heavy rain and embedded thunderstorms this afternoon and overnight could produce 1-1.5" of rain in the watch area. This heavy rainfall combined with snowmelt will produce increased streamflows and an elevated risk of ice jam flooding. - 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 are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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
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