Weather Alert in Virginia
Special Weather Statement issued March 2 at 6:01PM EST by NWS Blacksburg VA
AREAS AFFECTED: Roanoke; Botetourt; Rockbridge; Bedford; Amherst
DESCRIPTION: Light icing possible along the Blue Ridge Parkway overnight. Temperatures along the Blue Ridge Parkway are in the upper 20s to around 30. This will promote icing on elevated surfaces such as tree limbs and powerlines. Slick spots may also develop on bridges where the air can pass underneath and freeze the pavement. Temperatures are expected to remain nearly steady through the overnight...hovering near or just below freezing in the higher elevations, and above freezing in the lower elevations.
INSTRUCTION: N/A
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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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