Weather Alert in Pennsylvania
Winter Storm Watch issued March 16 at 2:28AM EDT until March 18 at 8:00AM EDT by NWS Cleveland OH
AREAS AFFECTED: Southern Erie
DESCRIPTION: * WHAT...Heavy lake effect snow possible. Total snow accumulations between 5 and 9 inches possible. Winds could gust as high as 45 mph. * WHERE...Southern Erie County. * WHEN...From this evening through Wednesday morning. * IMPACTS...Plan on slippery conditions with with slower travel likely The hazardous conditions could impact the Tuesday morning and evening commutes. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Rain showers will change to snow showers this afternoon, with bands of locally heavy lake effect snow expected to develop tonight as arctic air moves into the region. The lake effect snow will persist into Tuesday night before gradually tapering off. The snowfall amounts will depend on the placement and duration of the most persistent snow bands. In addition, west winds will continue to gust to 35 to 45 mph at times tonight and Tuesday morning leading to blowing snow and poor visibility where the bands persist.
INSTRUCTION: Monitor the latest forecasts for updates on this situation.
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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
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