Weather Alert in Alaska
Hydrologic Outlook issued August 12 at 2:10PM AKDT by NWS Fairbanks AK
AREAS AFFECTED: South Slopes of the Western Brooks Range; Noatak Valley; Lower Kobuk Valley; Upper Kobuk Valleys
DESCRIPTION: ESFAFG A coastal storm is bringing heavy rain to the Lisburne Peninsula this evening that spreads east across the Western Brooks Range through Wednesday. Total rainfall is likely to exceed 2 inches for the south facing slopes of the far Western Brooks Range near Kivalina by Wednesday with lesser amounts farther east near Ambler. Localized areas could see up to 3 inches of total rainfall. Rain is expected to end Tuesday night near Point Hope and early Thursday morning near Ambler. Rapidly rising water levels are possible for smaller streams with a chance of minor flooding.
INSTRUCTION: N/A
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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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