Weather Alert in Montana
Winter Storm Watch issued April 1 at 1:45PM MDT until April 4 at 6:00AM MDT by NWS Billings MT
AREAS AFFECTED: Custer; Fallon; Powder River; Carter
DESCRIPTION: * WHAT...Periods of heavy snow. Total snow accumulations between 5 and 8 inches possible. Winds could gust as high as 35 mph. * WHERE...Carter, Custer, Fallon, and Powder River. * WHEN...From late Thursday night through late Friday night. * IMPACTS...Travel could be very difficult due to snow, areas of blowing snow and poor visibility. This includes Highway 12 from Miles City to Baker, and US-212 from Broadus to Alzada. Cool, wet and windy conditions will be hazardous for young livestock. * ADDITIONAL DETAILS...The heaviest snow is expected Thursday night into Friday morning.
INSTRUCTION: Slow down and use caution while traveling. For the latest road conditions, call 5 1 1.
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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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