Weather Alert in Alaska
High Surf Advisory issued August 10 at 5:16AM AKDT until August 12 at 10:00PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Kuskokwim Delta Coast and Nunivak Island
DESCRIPTION: * WHAT...Water levels 1 to 2 feet above the normal highest tide line. Wave heights between 4 to 8 feet along the coast. * WHERE...Along the Kuskokwim Delta Coast, including the communities of Kwigillingok, Kongiganak, and Kipnuk. * WHEN...From 10 AM AKDT Monday to 10 PM AKDT Tuesday. * IMPACTS...Localized coastal erosion may occur. * ADDITIONAL DETAILS...There will be 2 peaks of high water occurring around high tide. The first occurs Monday afternoon and the second on Tuesday afternoon. The strongest push of southerly winds into the coast, with gusts between 40 to 50 mph, will be Monday afternoon into Tuesday morning. However, southerly fetch and winds will linger through Tuesday evening causing wave heights to be slow to subside along the coast.
INSTRUCTION: A high surf advisory means that high surf will affect beaches in the advisory area, producing rip currents and localized beach erosion.
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Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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