Weather Alert in Colorado
Winter Weather Advisory issued February 16 at 11:18PM MST until February 18 at 11:00PM MST by NWS Denver CO
AREAS AFFECTED: Jackson County Below 9000 Feet; Grand and Summit Counties Below 9000 Feet; South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet; South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet
DESCRIPTION: * WHAT...Snow expected. Total snow accumulations between 4 and 9 inches, with localized higher amounts up to 12 inches in the valleys. For the mountains, 6 to 12 inches with localized higher amounts up 18 inches. Winds gusting as high as 60 mph over the mountain passes. * WHERE...North Park, Grand and Summit Counties Below 9000 Feet, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...Until 11 PM MST Wednesday. * IMPACTS...Snow and blowing snow will reduce visibility to a quarter mile or less, with potential for sudden snow squalls to bring quick intense bursts of snow, rapidly reduced visibility, and treacherous travel conditions. Travel could be very difficult to impossible. The hazardous conditions will impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Between 5AM and 8AM this morning, a burst of heavy snow and strong winds are expected to drop visibility to less than a quarter and cause roads to become snow covered. Travel is expected to be very difficult during the time frame.
INSTRUCTION: Roads will be slick resulting in slow and hazardous travel. Allow extra time to reach your destination. If traveling to the mountains, be prepared for winter driving conditions. Check cotrip.org for road closures and traction laws.
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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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