Weather Alert in Arkansas
Tornado Warning issued March 7 at 3:41AM CST until March 7 at 4:30AM CST by NWS Shreveport LA
AREAS AFFECTED: Lafayette, AR; Miller, AR; Cass, TX
DESCRIPTION: TORSHV The National Weather Service in Shreveport has issued a * Tornado Warning for... West Central Lafayette County in southwestern Arkansas... Southern Miller County in southwestern Arkansas... Southeastern Cass County in northeastern Texas... * Until 430 AM CST. * At 341 AM CST, a severe thunderstorm capable of producing a tornado was located near Bivins, or 10 miles south of Atlanta, moving northeast at 45 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows and vehicles will occur. Tree damage is likely. * Locations impacted include... Atlanta, Queen City, Fouke, Brightstar, Ravanna, Genoa, Bivins, Bloomburg and Fort Lynn.
INSTRUCTION: Move to an interior room on the lowest floor of a well-built building away from windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris.
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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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