Weather Alert in Alaska
High Wind Warning issued August 28 at 3:48AM AKDT until August 28 at 10:00PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Anchorage
DESCRIPTION: * WHAT...Southeast winds 20 to 30 mph with gusts up to 55 mph expected. * WHERE...Anchorage. * WHEN...From 8 AM this morning to 10 PM AKDT this evening. * IMPACTS...High winds may move loose debris, damage property, and cause power outages. Trees are still fully leafed, and will be particularly vulnerable to damage in strong winds. Travel could be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...A frontal system will move into Southcentral today and bring widespread strong winds to the Anchorage Bowl starting late this morning. The stronger winds will initially be confined to the east side of town, then rapidly spread to the rest of Anchorage later this morning. The strongest wind gusts ranging from 35 to 55 mph are expected to peak early this afternoon. Winds will then slowly diminish through late this evening.
INSTRUCTION: People are urged to secure loose objects that could be blown around or damaged by the wind. Prepare for the possibility of widespread power outages. Use caution if you must drive.
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
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
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