Weather Alert in Minnesota
Winter Storm Watch issued February 16 at 2:05AM CST until February 19 at 12:00PM CST by NWS Duluth MN
AREAS AFFECTED: Southern Lake/North Shore; Southern Cook/North Shore
DESCRIPTION: * WHAT...Blizzard conditions possible. Total snow accumulations between 10 and 15 inches and ice accumulations around one tenth of an inch possible. Winds could gust as high as 50 mph. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...From Tuesday evening through Thursday morning. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the Wednesday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...Expect terrain and lake enhancement to snowfall totals and snowfall rates. The heaviest snowfall rates will be Tuesday night and Wednesday morning. Winds will be strongest Tuesday evening into Wednesday morning. The best potential for a wintry mix will be along and southwest of Silver Bay Tuesday evening into Wednesday morning.
INSTRUCTION: Prepare for possible blizzard conditions. Continue to monitor the latest forecasts for updates on this situation. Prepare for possible blizzard conditions, especially whiteout conditions along Highway 61 on the North Shore. Continue to monitor the latest forecasts for updates on this situation.
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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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