Weather Alert in Colorado
Dense Fog Advisory issued August 25 at 9:36AM MDT until August 25 at 12:00PM MDT by NWS Goodland KS
AREAS AFFECTED: Yuma County; Kit Carson County; Cheyenne County; Cheyenne; Rawlins; Sherman; Thomas; Wallace; Logan; Greeley; Wichita; Dundy
DESCRIPTION: * WHAT...Visibility at or below one quarter mile in dense fog. * WHERE...Portions of eastern Colorado, northwest Kansas and southwest Nebraska. * WHEN...Until noon MDT /1 PM CDT/ today. * IMPACTS...Hazardous driving conditions. * ADDITIONAL DETAILS...This includes portions of the Interstate 70 corridor in eastern Colorado and northwest Kansas. As of 930 am MDT, observation sites reporting dense fog included Yuma, Wray, Colby and Oakley. Gradual improvement is expected late this morning and early this afternoon.
INSTRUCTION: If driving, slow down, use low beam headlights and leave plenty of following distance.
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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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