Weather Alert in Alaska
Winter Weather Advisory issued February 19 at 4:09AM AKST until February 20 at 3:00AM AKST by NWS Juneau AK
AREAS AFFECTED: Glacier Bay; Eastern Chichagof Island; Admiralty Island
DESCRIPTION: ...ACCUMULATING SNOW ACROSS THE PANHANDLE TO END THE WEEK... .A front moving across the gulf and developing low across the northern coast will bring snow showers to the panhandle beginning late Wednesday night. With stable cold dry continental air in place ahead of this system, precipitation is expected to remain snow throughout the event with high snow ratios. The initial frontal wave will push eastward into the panhandle with the northeast gulf coast seeing showers late tonight and highest snow accumulations expected along the outer coast with orographic enhancement. For most areas, snow is expected to be light and fluffy in nature due to cold temperatures both aloft and down to the surface. * WHAT...Snow expected. Total snow accumulations of 4 to 8 inches. * WHERE...Glacier Bay, Eastern Chichagof Island and Admiralty Island. * WHEN...Until 3 AM AKST Friday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...Snow showers will begin to impact communities along Icy Strait and Admiralty Island early Thursday. Heavier snow showers will likely develop further inland Thursday evening as the low tracks southward along the outer coast and a deformation band sets up.
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.
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Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
Weather Topic: What are Stratus Clouds?
Home - Education - Cloud Types - Stratus Clouds
Next Topic: Wall Clouds
Stratus clouds are similar to altostratus clouds, but form at a
lower altitude and are identified by their fog-like appearance, lacking the
distinguishing features of most clouds.
Stratus clouds are wider than most clouds, and their base has a smooth, uniform
look which is lighter in color than a nimbostratus cloud.
The presence of a stratus cloud indicates the possibility of minor precipitation,
such as drizzle, but heavier precipitation does not typically arrive in the form
of a stratus cloud.
Next Topic: Wall Clouds
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