Weather Alert in Pennsylvania
Flash Flood Warning issued June 14 at 9:20PM EDT until June 14 at 11:45PM EDT by NWS Pittsburgh PA
AREAS AFFECTED: Allegheny, PA; Washington, PA
DESCRIPTION: At 920 PM EDT, the public reported flash flooding and multiple road closures due to thunderstorms producing heavy rain across the warned area. Up to 3 inches of rain have fallen. Flash flooding is already occurring. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Public reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that may experience flash flooding include... Mount Lebanon, Bethel Park, McMurray, Washington, Canonsburg, Gastonville, West Mifflin, Baldwin, Upper St. Clair, Scott Township, Whitehall, South Park Township, Robinson Township, Cecil-Bishop, Jefferson Hills, Brentwood, Dormont, Castle Shannon and Pleasant Hills.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
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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
Weather Topic: What are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
Next Topic: Cumulus Clouds
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