Weather Alert in New York
Special Weather Statement issued February 18 at 9:17PM EST by NWS Buffalo NY
AREAS AFFECTED: Niagara; Northern Erie; Genesee; Wyoming; Livingston; Southern Erie
DESCRIPTION: An area of thunderstorms and associated freezing rain is advancing eastward toward western New York this evening. These thunderstorms may affect the Niagara Falls and Buffalo areas by around 11 PM. Surface temperatures will be near or slightly below freezing as they cross the area, so a short period of thunder and freezing rain is possible as they move through the area. This activity will move swiftly to the southeast, so areas in southern Genesee County and Wyoming County could see a period of thunder and freezing rain around midnight. Areas in Livingston County would be affected close to 1 AM. Any areas that are below freezing may see bridges and overpasses quickly ice up. Pay attention to your local temperatures and maintain awareness for rapidly changing driving conditions in these areas.
INSTRUCTION: N/A
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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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