Weather Alert in Kentucky
Dense Smoke Advisory issued March 14 at 3:00PM EDT until March 15 at 12:00PM EDT by NWS Jackson KY
AREAS AFFECTED: Whitley
DESCRIPTION: * WHAT...Localized visibility to under 1/4 mile possible in dense smoke. * WHERE...Whitley County, mainly west of I-75 and north of KY-478. KY-90 between US-25W and the Cumberland Falls State Resort Park Routes will be particularly prone to impacts from dense smoke. * WHEN...From 6 PM this evening to noon EDT Sunday. * IMPACTS...Low visibility could make driving conditions hazardous.
INSTRUCTION: Persons with respiratory illnesses should remain indoors to avoid inhaling smoke. If driving through dense smoke, slow down, use your low-beam headlights, and leave plenty of distance ahead of you.
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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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