Weather Alert in Alaska
Cold Weather Advisory issued February 28 at 2:43PM AKST until March 1 at 11:00AM AKST by NWS Anchorage AK
AREAS AFFECTED: Northern Copper Valley; Western Copper Valley; Central Copper Valley; Ernestine; Southern Copper Valley; Tok Cutoff; McCarthy
DESCRIPTION: * WHAT...Very cold temperatures as low as 45 below zero expected. * WHERE...Copper River Basin. * WHEN...From 1 AM to 11 AM AKST Sunday. * IMPACTS...Frostbite and hypothermia are likely if exposed to these temperatures. * ADDITIONAL DETAILS...Temperatures Sunday morning will be around or a bit colder than what was observed Saturday morning. Localized north to northeast winds gusting to 25 mph will develop near Paxson and along the Tok Cutoff this evening leading to wind chills as low as 50 to 55 below zero.
INSTRUCTION: Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
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Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
Weather Topic: What is Condensation?
Home - Education - Precipitation - Condensation
Next Topic: Contrails
Condensation is the process which creates clouds, and therefore
it is a crucial process in the water cycle.
Condensation is the change of matter from a state of gas into a state of liquid,
and it happens because water molecules release heat into the atmosphere and
become organized into a more closely packed structure, what we might see as
water droplets.
Water is always present in the air around us as a vapor, but it's too small for
us to see. When water undergoes the process of condensation it becomes organized
into visible water droplets. You've probably seen condensation happen before on the
surface of a cold drink!
Next Topic: Contrails
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