Weather Alert in New York
Winter Storm Warning issued February 19 at 1:15PM EST until February 21 at 1:00PM EST by NWS Albany NY
AREAS AFFECTED: Northern Warren
DESCRIPTION: * WHAT...Heavy snow expected. Total snow accumulations between 6 and 9 inches. * WHERE...Northern Warren County. * WHEN...From 10 AM Friday to 1 PM EST Saturday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be difficult. The hazardous conditions will likely impact the Friday evening commute. * ADDITIONAL DETAILS...Snowfall rates may reach 0.5 to 1 inches at times, especially Friday evening.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency.
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North America Water Vapor (Moisture)
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Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
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