Weather Alert in Arizona
Dust Storm Warning issued August 21 at 9:41PM MST until August 21 at 10:45PM MST by NWS Phoenix AZ
AREAS AFFECTED: Maricopa, AZ
DESCRIPTION: The National Weather Service in Phoenix has issued a * Dust Storm Warning for... Maricopa County in south central Arizona... * Until 1045 PM MST. * At 940 PM MST, a wall of dust was along a line extending from Arizona State Fairgrounds to near Perryville to near Painted Rock Dam, moving north at 20 mph. HAZARD...Less than a quarter mile visibility with strong wind in excess of 40 mph. SOURCE...Storm Chaser. IMPACT...Dangerous life-threatening travel. * This includes the following highways... AZ Interstate 10 between mile markers 95 and 135. US Highway 60 between mile markers 131 and 148. AZ Route 101 between mile markers 2 and 8. Locations impacted include... Glendale, Surprise, Avondale, Goodyear, Buckeye, El Mirage, Tolleson, Youngtown, Sun City West, Waddell, Cashion, Sun City, Litchfield Park, Palo Verde, and White Tank Mountain Park.
INSTRUCTION: Dust storms lead to dangerous driving conditions with visibility reduced to near zero. If driving, avoid dust storms if possible. If caught in one, pull off the road, turn off your lights and keep your foot off the brake.
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Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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