Weather Alert in Arizona
Wind Advisory issued May 13 at 5:12AM MST until May 13 at 7:00PM MST by NWS Flagstaff AZ
AREAS AFFECTED: Kaibab Plateau; Marble and Glen Canyons; Grand Canyon Country; Coconino Plateau; Yavapai County Mountains; Northeast Plateaus and Mesas Hwy 264 Northward; Chinle Valley; Chuska Mountains and Defiance Plateau; Western Mogollon Rim; Eastern Mogollon Rim; White Mountains; Yavapai County Valleys and Basins; Oak Creek and Sycamore Canyons; Black Mesa Area; Northeast Plateaus and Mesas South of Hwy 264
DESCRIPTION: * WHAT...Southwest winds 25 to 35 mph with gusts 45 to 55 mph expected. * WHERE...Navajo Nation in Arizona, Mogollon Rim, Yavapai County, Kaibab Plateau, Marble and Glen Canyons, Grand Canyon Country, Coconino Plateau, White Mountains, and Oak Creek and Sycamore Canyons. * WHEN...From 8 AM MST /9 AM MDT/ this morning to 7 PM MST /8 PM MDT/ this evening. * IMPACTS...Travel will be difficult, especially for high profile vehicles. Patchy blowing dust will lead to reduced visibilities, resulting in hazardous driving conditions at times.
INSTRUCTION: Secure loose outdoor objects that could be blown around or damaged by the wind. Winds this strong can make driving difficult, especially for high profile vehicles, such as RVs, campers, and tractor trailers. Use extra caution.
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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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