Weather Alert in Virginia
Extreme Cold Warning issued February 6 at 12:58PM EST until February 8 at 10:00AM EST by NWS Wakefield VA
AREAS AFFECTED: Accomack; Northampton
DESCRIPTION: * WHAT...For the Extreme Cold Warning, dangerously cold wind chills as low as 9 below expected. For the High Wind Warning, northwest winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Northampton and Accomack Counties. * WHEN...For the Extreme Cold Warning, from 6 AM Saturday to 10 AM EST Sunday. For the High Wind Warning, from 8 AM to 9 PM EST Saturday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. The cold wind chills as low as 9 below zero could result in hypothermia if precautions are not taken.
INSTRUCTION: Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive. Dress in layers including a hat, face mask, and gloves if you must go outside.
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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
Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
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