Weather Alert in California
Winter Storm Watch issued February 13 at 12:05PM PST until February 18 at 10:00PM PST by NWS Las Vegas NV
AREAS AFFECTED: Eastern Sierra Slopes of Inyo County
DESCRIPTION: * WHAT...Heavy snow possible. Total snow accumulations exceeding 3 feet above 8000 feet...1.5 to 2.5 feet above 7000 feet...and 8 to 16 inches down to 6000 feet. Winds could gust as high as 55 mph. * WHERE...Eastern Sierra Slopes. * WHEN...From late Sunday night through Wednesday evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Travel could be very difficult to impossible. Strong winds could cause tree damage. * ADDITIONAL DETAILS...The highest snowfall rates will be from Monday afternoon through Tuesday evening.
INSTRUCTION: Monitor the latest forecasts for updates on this situation. Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary.
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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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