Weather Alert in Pennsylvania
Flood Warning issued July 14 at 4:24PM EDT until July 14 at 10:00PM EDT by NWS State College PA
AREAS AFFECTED: Clinton, PA; Columbia, PA; Lycoming, PA; Montour, PA; Northumberland, PA; Sullivan, PA; Union, PA
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is occurring. * WHERE...A portion of central Pennsylvania, including the following counties, Clinton, Columbia, Lycoming, Montour, Northumberland, Sullivan and Union. * WHEN...Until 1000 PM EDT. * IMPACTS...Numerous roads remain closed due to flooding. Streams are rising again in many areas after a brief fall. Many locations in the warning area will have the water rise as high and even higher than it was earlier today. It will take several hours for all the water from these storms to work through local drainage systems in urban areas. * ADDITIONAL DETAILS... - At 421 PM EDT, gauge reports indicated heavy rain due to thunderstorms. Flooding is already occurring in the warned area. Between 1 and 7 inches of rain have fallen in the past 18 hours. - Additional rainfall amounts up to 1 inch are possible in the warned area. - Some locations that will experience flooding include... Williamsport, Milton, Montoursville, Jersey Shore, Muncy, Watsontown, Hughesville, Montgomery, Duboistown, New Columbia, Allenwood, Buckhorn, Jerseytown, Rohrsburg, Iola, Jamison City, Eyers Grove, Waller, Exchange and Delaware Run. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Stay away or be swept away. River banks and culverts can become unstable and unsafe. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route.
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Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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