Weather Alert in New Jersey
Special Weather Statement issued February 28 at 8:39AM EST by NWS Upton NY
AREAS AFFECTED: Western Passaic; Eastern Passaic; Western Bergen; Western Essex; Western Union; Eastern Union; Orange; Putnam; Rockland; Northern Westchester; Richmond (Staten Is.)
DESCRIPTION: Locally dense fog continues over portions of northeast New Jersey, the lower Hudson Valley, and on Staten Island this morning. At the same time, temperatures in most spots remain at or below freezing. This combination could result in slippery conditions of untreated surfaces due to black ice. The fog should burn off quickly between now and 10 AM. Use extra caution if out driving or walking this morning, as black ice can make conditions very slick. Locally reduced visibility is likely as well. Leave extra breaking distance between you and the car in front of you.
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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