Weather Alert in Arkansas
Special Weather Statement issued August 11 at 8:41PM CDT by NWS Tulsa OK
AREAS AFFECTED: Crawford; Sebastian; Adair; Sequoyah; Haskell; Le Flore
DESCRIPTION: At 841 PM CDT, Doppler radar indicated strong thunderstorms along a line extending from 7 miles east of Bunch to 4 miles southeast of Gans to 6 miles northwest of Fanshawe. Movement was east at 35 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down small tree limbs and blow around unsecured objects. Locations in or near the path include... Brushy... Mccurtain... Cameron... Pocola... Spiro... Cowlington... Mc Curtain... Rye Hill... Poteau... Moffett... Lee Creek... Shady Point... Panama... Fort Smith... Uniontown... Howe... Fort Smith Regional Airport... Van Buren... Muldrow... Short... This includes the following highways, Interstate 40 in Arkansas between mile markers 0 and 6. Interstate 40 in Oklahoma between mile markers 308 and 328. Interstate 540 near mile marker 1, and between mile markers 3 and 14.
INSTRUCTION: If outdoors, consider seeking shelter inside a building.
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Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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