Weather Alert in Ohio
Tornado Warning issued April 29 at 4:39PM EDT until April 29 at 5:00PM EDT by NWS Pittsburgh PA
AREAS AFFECTED: Columbiana, OH; Jefferson, OH; Beaver, PA; Washington, PA; Brooke, WV; Hancock, WV
DESCRIPTION: At 439 PM EDT, severe thunderstorms capable of producing both tornadoes and extensive straight line wind damage were located along a line from over Wellsville to near Tiltonsville, or along a line from over Wellsville to near Wellsburg, moving east at 65 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... Weirton, Steubenville, East Liverpool, Wellsville, Wellsburg, Avella, Toronto, Wintersville, Ohioville, Mingo Junction, Follansbee, Midland, Hooverson Heights, Chester, Industry, New Cumberland, Shippingport, Burgettstown, Smithfield and Newell.
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 Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
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