Weather Alert in Alaska
Extreme Cold Watch issued February 24 at 10:04AM AKST until February 26 at 6:00PM AKST by NWS Anchorage AK
AREAS AFFECTED: Southern Kenai Mtns
DESCRIPTION: * WHAT...North winds 30 to 50 mph with gusts up to 65 mph expected. A few isolated gusts to 75 mph possible. Wind chills dropping to 20 below to 25 below zero Wednesday night through Thursday afternoon. * WHERE...Seward and vicinity. * WHEN...For the High Wind Warning, from midnight tonight to midnight AKST Wednesday Night. For the Extreme Cold Watch, from Wednesday evening through Thursday afternoon. * IMPACTS...High winds may move loose debris, damage property, and cause power outages. Travel will be difficult. The dangerously cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 20 minutes. * ADDITIONAL DETAILS...Northerly winds will rapidly strengthen Tuesday afternoon and evening, then peak Tuesday night through Wednesday. Winds will then begin to slowly diminish Wednesday night through Thursday. Wind chills as low as 25 below zero overnight Wednesday could result in hypothermia or frostbite if precautions are not taken.
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. An extreme cold watch means that very cold temperatures and wind chills are possible. Wear protective clothing such as a hat, face mask, and heavy gloves or mittens if you have plans to be outdoors. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly.
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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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