Weather Alert in Alaska
Winter Storm Warning issued March 14 at 2:38PM AKDT until March 16 at 10:00AM AKDT by NWS Juneau AK
AREAS AFFECTED: City of Hyder
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...Heavy snow expected. Total snow accumulations of 14 to 20 inches. * WHERE...City of Hyder. * WHEN...From 7 AM Sunday to 10 AM AKDT Monday. * IMPACTS...Travel will be very difficult. * ADDITIONAL DETAILS...Current forecast has heaviest snowfall rates arriving Sunday afternoon into the late evening. Prolonged snowfall will continue through Monday.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water with you in case of an emergency. People are urged to prepare their property before the onset of winter weather. Mariners should prepare their vessels for heavy snow.
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Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
Weather Topic: What are Contrails?
Home - Education - Cloud Types - Contrails
Next Topic: Cumulonimbus Clouds
A contrail is an artificial cloud, created by the passing of an
aircraft.
Contrails form because water vapor in the exhaust of aircraft engines is suspended
in the air under certain temperatures and humidity conditions. These contrails
are called exhaust contrails.
Another type of contrail can form due to a temporary reduction in air pressure
moving over the plane's surface, causing condensation.
These are called aerodynamic contrails.
When you can see your breath on a cold day, it is also because of condensation.
The reason contrails last longer than the condensation from your breath is
because the water in contrails freezes into ice particles.
Next Topic: Cumulonimbus Clouds
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