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 is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
Weather Topic: What are Stratus Clouds?
Home - Education - Cloud Types - Stratus Clouds
Next Topic: Wall Clouds
Stratus clouds are similar to altostratus clouds, but form at a
lower altitude and are identified by their fog-like appearance, lacking the
distinguishing features of most clouds.
Stratus clouds are wider than most clouds, and their base has a smooth, uniform
look which is lighter in color than a nimbostratus cloud.
The presence of a stratus cloud indicates the possibility of minor precipitation,
such as drizzle, but heavier precipitation does not typically arrive in the form
of a stratus cloud.
Next Topic: Wall Clouds
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