Weather Alert in Minnesota
Winter Weather Advisory issued February 18 at 6:28AM CST until February 18 at 3:00PM CST by NWS Aberdeen SD
AREAS AFFECTED: Traverse; Big Stone; Roberts; Grant
DESCRIPTION: * WHAT...Snow and widespread blowing snow. Additional snow accumulations up to two inches. Winds gusting as high as 55 mph. * WHERE...In Minnesota, Big Stone and Traverse Counties. In South Dakota, Grant and Roberts Counties. * WHEN...Until 3 PM CST this afternoon. * IMPACTS...Plan on slippery road conditions. Falling and blowing snow, frequently reducing visibility below a half mile, will make travel dangerous, especially in open country. The hazardous conditions could impact the Wednesday morning commute. Very strong winds could cause extensive tree damage.
INSTRUCTION: Slow down and use caution while traveling. In Minnesota, the latest road conditions can be obtained at 511mn.org, or by calling 5 1 1. In South Dakota, the latest road conditions can be obtained by calling 5 1 1.
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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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