Weather Alert in Arizona
Special Weather Statement issued August 21 at 8:11PM MST by NWS Phoenix AZ
AREAS AFFECTED: Tonopah Desert; Gila Bend; Buckeye/Avondale; Central Phoenix; East Valley; Fountain Hills/East Mesa; South Mountain/Ahwatukee; Southeast Valley/Queen Creek; Northwest Pinal County; West Pinal County; Apache Junction/Gold Canyon; Pinal/Superstition Mountains; Sonoran Desert Natl Monument
DESCRIPTION: At 808 PM MST, radar indicated several clusters of thunderstorms moving through northern Pinal and southwest Maricopa Counties. Conditions will continue to remain favorable for the development of additional thunderstorms. Some storms may become strong to severe. Winds in excess of 40 mph will be possible. Strong, gusty winds will be capable of producing areas of blowing dust with reduced visibilities. Locations impacted include... Mesa, Chandler, Gilbert, Tempe, Avondale, Goodyear, Buckeye, Casa Grande, Apache Junction, Coolidge, Gila Bend, East Mesa, Gold Canyon, Sun Lakes, Maricopa, Queen Creek, Estrella, Arizona City, Gold Camp, and South Phoenix. This includes the following highways... AZ Interstate 10 between mile markers 152 and 204. AZ Interstate 8 between mile markers 96 and 178. US Highway 60 between mile markers 173 and 209. Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle.
INSTRUCTION: N/A
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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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