Weather Alert in Wisconsin
Winter Storm Warning issued February 17 at 11:08PM CST until February 19 at 12:00PM CST by NWS Duluth MN
AREAS AFFECTED: Douglas; Bayfield
DESCRIPTION: * WHAT...Heavy snow with light ice accumulations expected. Total snow accumulations of 5 to 8 inches for northern Douglas and Bayfield Counties, elsewhere between 2 and 4 inches of snow. Additional ice accumulations around a glaze. Winds gusting as high as 45 mph. * WHERE...Bayfield and Douglas Counties. This includes the Tribal Lands of the Red Cliff Band. Other locations including the Apostle Islands National Lakeshore. * WHEN...Until noon CST Thursday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday morning and evening commutes. * ADDITIONAL DETAILS...Light ice accumulations on surfaces is most likely tonight. The heaviest snowfall in the far northern parts of the Counties is expected late tonight through Wednesday mid day.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Call 511 or visit www.511wi.gov for Wisconsin road information.
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Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
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
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