Weather Alert in South Carolina
Special Weather Statement issued March 23 at 1:50AM EDT by NWS Columbia SC
AREAS AFFECTED: Chesterfield; Newberry; Fairfield; Kershaw; Northern Lancaster; Southern Lancaster
DESCRIPTION: The combination of relative humidities falling near or below 30 percent, northerly wind gusts up to 25-30 mph, and dry fine fuels will create increased fire danger conditions across parts of the northern and western Midlands. Given the dry vegetation and increased winds outdoor fires will have the potential to spread quickly, increasing the danger of wildfires. Please refer to your local burn permitting authorities on whether you can burn today. If you do burn, use extreme caution as fires can quickly get out of control under these conditions.
INSTRUCTION: N/A
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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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