Weather Alert in Pennsylvania
Winter Weather Advisory issued March 16 at 3:33AM EDT until March 17 at 2:00AM EDT by NWS State College PA
AREAS AFFECTED: Warren; McKean; Potter; Elk; Cameron; Northern Clinton; Clearfield; Northern Centre
DESCRIPTION: * WHAT...Snow expected. Total snow accumulations between 1 and 4 inches. Winds gusting as high as 40 mph. * WHERE...A portion of central Pennsylvania. * WHEN...From 5 PM this afternoon to 2 AM EDT Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening commute. * ADDITIONAL DETAILS...Snowfall rates >1" are likely this evening as cold air surges in and changes rain to snow in the wake of a cold front. Rapid accumulation on roadways is possible as most of the snow will fall after sunset.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
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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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