Weather Alert in Ohio

Recent Locations: Columbus, OH

Severe Thunderstorm Warning issued April 29 at 4:46PM EDT until April 29 at 5:30PM EDT by NWS Pittsburgh PA

AREAS AFFECTED: Columbiana, OH; Allegheny, PA; Armstrong, PA; Beaver, PA; Butler, PA; Indiana, PA; Lawrence, PA; Washington, PA; Westmoreland, PA; Brooke, WV; Hancock, WV; Ohio, WV

DESCRIPTION: SVRPBZ The National Weather Service in Pittsburgh has issued a * Severe Thunderstorm Warning for... Eastern Columbiana County in east central Ohio... Beaver County in western Pennsylvania... Northern Washington County in southwestern Pennsylvania... Southeastern Lawrence County in western Pennsylvania... Butler County in west central Pennsylvania... Southwestern Indiana County in west central Pennsylvania... Allegheny County in southwestern Pennsylvania... Northwestern Westmoreland County in southwestern Pennsylvania... Armstrong County in west central Pennsylvania... Ohio County in northern West Virginia... Brooke County in northern West Virginia... Hancock County in northern West Virginia... * Until 530 PM EDT. * At 445 PM EDT, severe thunderstorms were located along a line extending from Lisbon to near Shippingport to near Avella to West Liberty, moving east at 75 mph. THESE ARE DESTRUCTIVE STORMS FOR southern Beaver, northern Washington, and Allegheny Counties. HAZARD...80 mph wind gusts. SOURCE...Radar indicated. IMPACT...Extensive tree damage and widespread power outages. Mobile homes will be heavily damaged. Expect considerable damage to roofs, windows and vehicles. * Locations impacted include... Pittsburgh, Penn Hills, Mount Lebanon, Bethel Park, Ross Township, McCandless Township, Monroeville, Cranberry, Moon Township, McMurray, Greensburg, Weirton, McKeesport, Butler, Washington, Franklin Park, Jeannette, Aliquippa, Canonsburg, and Beaver Falls. This includes the following highways... Interstate 70 in Pennsylvania between mile markers 15 and 22. Pennsylvania Turnpike between mile markers 9 and 75. Interstate 79 in Pennsylvania between mile markers 34 and 105. Interstate 80 in Pennsylvania near mile marker 44. Parkway North between mile markers 1 and 13. Interstate 376 in Pennsylvania between mile markers 25 and 84.

INSTRUCTION: For your protection move to an interior room on the lowest floor of a building. Please report severe weather by calling 412-262-1988, posting to the NWS Pittsburgh Facebook page, or using X @NWSPITTSBURGH.

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North America Water Vapor (Moisture)

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Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails