Weather Alert in Indiana
Winter Weather Advisory issued February 21 at 1:02PM CST until February 23 at 12:00PM CST by NWS Chicago IL
AREAS AFFECTED: Porter
DESCRIPTION: * WHAT...Lake effect snow expected. Total snow accumulations between 2 and 5 inches, with locally higher amounts possible mainly east of State Road 49 and north of US Route 30. Some blowing and drifting snow is possible Sunday night into Monday. * WHERE...Porter County. The highest totals are expected across the northeast half of the county. * WHEN...From midnight tonight to noon CST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. The hazardous conditions are expected to impact the Monday morning commute. * ADDITIONAL DETAILS...A period of snow with some lake enhancement will develop late tonight through Sunday morning. A brief lull in snowfall may occur towards midday Sunday before another round of lake effect snow develops Sunday afternoon and evening through Monday morning.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions for Indiana can be obtained at https://511in.org.
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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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