Weather Alert in Arizona
Severe Thunderstorm Warning issued September 12 at 12:40PM MST until September 12 at 1:45PM MST by NWS Tucson AZ
AREAS AFFECTED: Graham, AZ
DESCRIPTION: SVRTWC The National Weather Service in Tucson has issued a * Severe Thunderstorm Warning for... Southwestern Graham County in southeastern Arizona... * Until 145 PM MST. * At 1240 PM MST, a severe thunderstorm was located 21 miles west of Thatcher, moving northeast at 20 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... Safford, Thatcher, Solomon, San Jose, Safford Regional Airport, Pima, Bylas, Central, Fort Thomas and Klondyke. This includes the following highways... Route 191 between mile markers 118 and 120. Route 70 between mile markers 292 and 345.
INSTRUCTION: Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail.
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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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