Weather Alert in Alaska
Winter Weather Advisory issued March 3 at 2:52PM AKST until March 4 at 6:00PM AKST by NWS Juneau AK
AREAS AFFECTED: Municipality of Skagway
DESCRIPTION: ...SNOW FOR THE NORTHERN AND CENTRAL PANHANDLE THROUGH WEDNESDAY... The next surge of snow is expected this evening as the main low moves closer to the panhandle bringing more moisture to the area. This next surge of moisture is expected to bring increasing snowfall rates to the Icy Strait corridor this evening. Along with this second wave of snow, the original band of snow is expected to set up around the Yakutat area bringing more accumulating snow to the area with the heaviest parts to the west of Yakutat. * WHAT...Snow expected. Total snow accumulations of 4 to 6 inches. * WHERE...Municipality of Skagway. * WHEN...From 3 AM to 6 PM AKST Wednesday. * IMPACTS...Travel could be very difficult. The cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes.
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 Contrails?
Home - Education - Cloud Types - Contrails
Next Topic: Cumulonimbus Clouds
A contrail is an artificial cloud, created by the passing of an
aircraft.
Contrails form because water vapor in the exhaust of aircraft engines is suspended
in the air under certain temperatures and humidity conditions. These contrails
are called exhaust contrails.
Another type of contrail can form due to a temporary reduction in air pressure
moving over the plane's surface, causing condensation.
These are called aerodynamic contrails.
When you can see your breath on a cold day, it is also because of condensation.
The reason contrails last longer than the condensation from your breath is
because the water in contrails freezes into ice particles.
Next Topic: Cumulonimbus Clouds
Weather Topic: What are Cumulus Clouds?
Home - Education - Cloud Types - Cumulus Clouds
Next Topic: Drizzle
Cumulus clouds are fluffy and textured with rounded tops, and
may have flat bottoms. The border of a cumulus cloud
is clearly defined, and can have the appearance of cotton or cauliflower.
Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall,
becoming cumulus congestus and possibly the even taller cumulonimbus clouds.
When cumulus clouds become taller, they have a greater chance of producing precipitation.
Next Topic: Drizzle
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