Weather Alert in District of Columbia
Extreme Cold Warning issued February 7 at 6:25PM EST until February 8 at 10:00AM EST by NWS Baltimore MD/Washington DC
AREAS AFFECTED: District of Columbia; Northern Baltimore; Cecil; Southern Baltimore; Prince Georges; Anne Arundel; Calvert; Northwest Montgomery; Central and Southeast Montgomery; Northwest Howard; Central and Southeast Howard; Northwest Harford; Southeast Harford; Fairfax; Arlington/Falls Church/Alexandria; Northern Fauquier; Western Loudoun; Eastern Loudoun; Northwest Prince William; Central and Southeast Prince William/Manassas/Manassas Park
DESCRIPTION: * WHAT...For the Extreme Cold Warning, dangerously cold wind chills as low as 10 below zero. For the Wind Advisory, northwest winds 20 to 30 mph with gusts up to 50 mph. * WHERE...The District of Columbia, central, northeast, northern, and southern Maryland, and northern Virginia. * WHEN...For the Wind Advisory, until 10 PM EST this evening. For the Extreme Cold Warning, until 10 AM EST Sunday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. The cold wind chills as low as 10 below zero could result in hypothermia if precautions are not taken. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures.
INSTRUCTION: Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Dress in layers including a hat, face mask, and gloves if you must go outside. Keep pets indoors as much as possible. Make sure outdoor animals have a warm, dry shelter, food, and unfrozen water. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside. If you do not have heat in your home or lack shelter, you can call 211 or visit your local county or city website for assistance locating appropriate shelter from the cold.
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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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