Weather Alert in Alaska
Winter Weather Advisory issued March 14 at 2:38PM AKDT until March 15 at 2:00PM AKDT by NWS Juneau AK
AREAS AFFECTED: City and Borough of Yakutat
DESCRIPTION: ...MODERATE TO HEAVY SNOWFALL RETURNS SUNDAY INTO MONDAY... .Bands of snow showers are currently pushing into the NE Gulf as of Saturday afternoon with widely varying conditions. Advisory level snowfall rates of around 1 inch per 3 hours is expected from Yakutat to Sitka, with lighter rates inland. If snow showers train over one location for an extended period of time, visibility could drop to a half mile at times with greater accumulations. This wave of showers is separate from a stronger low pressure system that is expected to track northward across the panhandle starting Sunday morning and continuing through Monday. Steady snowfall will return with heaviest rates across the northern and central Alaska Panhandle starting Sunday morning and continuing into Monday. Current forecast snowfall accumulations within the Winter Storm Warnings are between 6 to 14 inches, with locally higher amounts expected through Monday evening. For southern panhandle communities in Winter Weather Advisories, expecting snowfall accumulations of 3 to 6 inches, highest totals within interior Prince of Wales Island. The main forecast challenge for the southern panhandle will be the timing and transition period to a rain and snow mix, or potentially all rain by Sunday afternoon with temperatures reaching into the upper 30s to low 40s along the coast as the front pushes northward, limiting potential snowfall accumulations. Snow showers will then continue behind this system with widely variable accumulations through the rest of the week. * WHAT...Snow. Additional snow accumulations of 5 to 8 inches. * WHERE...City and Borough of Yakutat. * WHEN...Until 2 PM AKDT Sunday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...Scattered snow showers will continue through Saturday afternoon. Greatest snowfall rates expected late Saturday night into early Sunday morning.
INSTRUCTION: Slow down and use caution while traveling. People are urged to prepare their property before the onset of winter weather. For the latest road conditions, where available, call 5 1 1 or visit 511.alaska.gov. Mariners should prepare their vessels for heavy snow.
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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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