Weather Alert in Arizona
Flood Watch issued September 4 at 12:49AM MST until September 4 at 11:00PM MST by NWS Flagstaff AZ
AREAS AFFECTED: Yavapai County Mountains; Northern Gila County; Yavapai County Valleys and Basins
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of east central and west central Arizona, including the following areas, in east central Arizona, Northern Gila County. In west central Arizona, Yavapai County Mountains and Yavapai County Valleys and Basins. * WHEN...From 11 AM MST this morning through this evening. * IMPACTS...Flooding will be possible in creeks, normally dry washes, and swimming holes. Low-water crossings could also become flooded, which would create deadly travel conditions. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - Tropical moisture will enhance localized flooding concerns from potential heavy rainfall. - Additional information is available at weather.gov/flagstaff.
INSTRUCTION: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
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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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