Weather Alert in New York
Lake Effect Snow Warning issued March 16 at 1:54PM EDT until March 17 at 8:00PM EDT by NWS Buffalo NY
AREAS AFFECTED: Jefferson; Lewis
DESCRIPTION: * WHAT...Heavy lake effect snow expected. Total snow accumulations 6 to 12 inches in the most persistent bands across the Tug Hill Plateau, with 3 to 5 inches elsewhere. Winds gusting as high as 45 mph will produce blowing and drifting snow late tonight through Tuesday. There may be a brief period of sleet and freezing rain during the transition to snow this evening, with ice accumulations of up to a tenth of an inch in some areas. * WHERE...Jefferson and Lewis Counties. * WHEN...From 9 PM this evening to 8 PM EDT Tuesday. * IMPACTS...Travel will be difficult with snow covered roads and poor visibility. The hazardous conditions will impact the Tuesday morning and evening commutes. Gusty winds will down tree branches and cause isolated power outages. * ADDITIONAL DETAILS...A rapid drop in temperatures late this evening may produce very icy conditions on untreated roads, sidewalks, and parking lots.
INSTRUCTION: Heavy snow will fall in relatively narrow bands. If traveling, be prepared for rapidly changing road conditions and visibilities. Submit snow reports through our website or social media.
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Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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
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