Weather Alert in Hawaii
High Surf Advisory High Wind Warning Wind Advisory
Winter Storm Warning issued February 7 at 5:04PM HST until February 9 at 6:00PM HST by NWS Honolulu HI
AREAS AFFECTED: Big Island Summit
DESCRIPTION: ...WINTER STORM WARNING IN EFFECT FOR THE BIG ISLAND SUMMITS ABOVE 11000 FEET... .A disturbance aloft in combination with abundant moisture will bring periods of heavy snowfall to the Big Island summits of Mauna Kea and Mauna Loa Sunday through Monday. * WHAT...Heavy snow. Total snow accumulations 10 to 16 inches. Southerly winds could gust as high as 45 mph. * WHERE...Big Island Summits. * WHEN...From 6 AM Sunday to 6 PM HST Monday. * IMPACTS...Travel could be very difficult to impossible. Blowing snow will significantly reduce visibility at times, with periods of zero visibility.
INSTRUCTION: A Winter Storm Warning means significant amounts of snow, sleet, and ice are expected or occurring. Strong winds are also possible. This will make travel very hazardous or impossible. Any travel plans to the summits should be postponed until the threat diminishes.
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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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