Weather Alert in Arizona
Flood Advisory issued September 3 at 1:19PM MST until September 3 at 4:15PM MST by NWS Flagstaff AZ
AREAS AFFECTED: Coconino, AZ
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is expected along Lake Mary Road, near Mormon Lake. * WHERE...A portion of north central Arizona, including the following county, Coconino. * WHEN...Until 415 PM MST. * IMPACTS...Minor flooding in creeks and normally dry washes is imminent or occurring. * ADDITIONAL DETAILS... - At 117 PM MST, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - This includes the following creeks, washes and rivers... Youngs Canyon, Yellow Jacket Canyon, Anderson Canyon, Padre Canyon, Yaeger Canyon and Walnut Creek. - Some locations that will experience flooding include... Ashurst Lake, Perry Lake, Boot Lake, Mud Lake, Lakeview, Mormon Lake and Upper Lake Mary. - This includes the following recreation areas and campgrounds... Dairy Springs Campground, Ashurst Lake Campgrounds, Pine Grove Campground, Forked Pine Campground and Dairy Springs Campground. - Additional information is available at weather.gov/flagstaff.
INSTRUCTION: Be aware of your surroundings and do not drive on flooded roads. Low water crossings will become dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route.
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Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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