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 are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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