Weather Alert in Alaska
Special Weather Statement issued August 28 at 4:05AM AKDT by NWS Anchorage AK
AREAS AFFECTED: Northern Copper Valley; Western Copper Valley; Central Copper Valley; Ernestine; Southern Copper Valley
DESCRIPTION: A frontal system moving into Southcentral will usher strong and gusty southerly winds into the Copper River Basin and Valley starting late this morning. The strongest wind gusts will range from around 35 mph to near 55 mph, with the strongest gusts focused along the Copper River Valley north of Kenny Lake and along the Richardson and Glenn Highways north and west of Glennallen. Winds will begin to diminish tonight into Friday morning as the front pushes to the east. People are urged to secure loose objects that could be blown around by the strong winds and use caution while traveling. Winds could coincide with periods of moderate rain, potentially making driving difficult at times. Trees are still fully leafed and will be unusually vulnerable to damage from the strong winds. Localized power outages will be possible due the potential for strong winds to bring down tree branches onto power lines.
INSTRUCTION: N/A
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Weather Topic: What are Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
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