Weather Alert in Alaska
Winter Weather Advisory issued March 22 at 1:13PM AKDT until March 23 at 10:00AM AKDT by NWS Juneau AK
AREAS AFFECTED: City and Borough of Sitka
DESCRIPTION: ...ANOTHER ROUND OF SNOW EXPECTED FOR THE SOUTHERN AND CENTRAL PANHANDLE THROUGH MONDAY... .Another short wave bringing stronger snow showers is moving through the southern panhandle this afternoon. The snow showers have brought visibility down to less then a mile at times already south of Sumner Strait. Accumulations in the south will be the highest on the higher elevations of Prince of Wales Island midday Sunday, but more accumulations expected at sea level by Sunday evening and night as temperatures cool through Sunday evening. That short wave is then expected to move up to near northern Baranof and southern Chichagof Islands by late Sunday night and stall there into Monday possibly bringing persistent snow showers to Tenakee Springs and Angoon Monday. Though if the low tracks differently snow totals could turn out lower. * WHAT...Snow expected. Total snow accumulations of 4 to 6 inches. * WHERE...City and Borough of Sitka. * WHEN...From 7 PM this evening to 10 AM AKDT Monday. * IMPACTS...Travel by land, air, and sea could be impacted. * ADDITIONAL DETAILS...Snow showers are expected to increase in frequency this evening with showers persisting overnight Sunday night. Highest snow rate will likely be late Sunday night.
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 are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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