Weather Alert in Arizona
Severe Thunderstorm Warning issued August 25 at 2:09AM MST until August 25 at 2:45AM MST by NWS Tucson AZ
AREAS AFFECTED: Pima, AZ
DESCRIPTION: SVRTWC The National Weather Service in Tucson has issued a * Severe Thunderstorm Warning for... Northwestern Pima County in southeastern Arizona... * Until 245 AM MST. * At 209 AM MST, a severe thunderstorm was located 12 miles southeast of Ajo, moving northwest at 15 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Organ Pipe Cactus National Monument, Why and Gunsight. This includes the following highways... Route 85 between mile markers 45 and 57. Route 86 between mile markers 53 and 58.
INSTRUCTION: Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. Wind damage with this storm will occur before any rain or lightning. Do not wait for the sound of thunder before taking cover. Seek shelter immediately inside a sturdy structure and stay away from windows.
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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
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
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