Weather Alert in Pennsylvania
Winter Storm Warning issued February 22 at 5:02PM EST until February 23 at 1:00PM EST by NWS State College PA
AREAS AFFECTED: Dauphin; Schuylkill; Lebanon; York; Lancaster
DESCRIPTION: * WHAT...Heavy snow. Additional snow accumulations between 2 and 8 inches. Winds gusting as high as 40 mph. * WHERE...Dauphin, Lancaster, Lebanon, Schuylkill, and York Counties. * WHEN...Until 1 PM EST Monday. * IMPACTS...The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult. The hazardous conditions could impact the Monday morning commute. * ADDITIONAL DETAILS...Rain is currently transitioning to snow across the Lower Susquehanna Valley. Snow will begin to accumulate as temperatures fall tonight. The heaviest snow totals are expected to the east, with lesser amounts to the west. Much of the accumulating snow will be winding down by Monday morning.
INSTRUCTION: Persons are urged to stay indoors until conditions improve. If you must go outside, dress in layers. Several layers of clothes will keep you warmer than a single heavy coat. Cover exposed skin to reduce your risk of frostbite or hypothermia. Gloves, a scarf, and a hat will keep you from losing your body heat. Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary.
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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
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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