Weather Alert in Arizona
Flood Advisory issued September 4 at 4:43PM MST until September 4 at 7:45PM MST by NWS Flagstaff AZ
AREAS AFFECTED: Coconino, AZ
DESCRIPTION: * WHAT...Minor wash and street flooding caused by excessive rainfall. * WHERE...A portion of north central Arizona, including the following county, Coconino. * WHEN...Until 745 PM MST. * IMPACTS...Minor flooding in creeks and normally dry washes is imminent or occurring. * ADDITIONAL DETAILS... - At 442 PM MST, Doppler radar indicated periods of heavy rain due to repeating thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. - This includes the following creeks, washes and rivers... Johnson Wash, Johnson Run and Lost Spring Wash. - Some locations that will experience flooding include... Fredonia. - This includes the following highways... State Route 389 near mile marker 32. U.S. Highway 89A between mile markers 605 and 612. - 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 Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
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