Weather Alert in Pennsylvania

Recent Locations: Martinsville, MO   Williamsport, PA  

Special Weather Statement issued March 6 at 6:20PM EST by NWS Binghamton NY

AREAS AFFECTED: Lackawanna; Luzerne; Pike; Southern Wayne

DESCRIPTION: Area observations and highway web cams via the PA 511 website are showing locally dense fog across the area. Localized areas of dense fog were noted along portions of interstate 80, 81, 380, 476 and 84 among other locations. The dense fog is mainly confined to the higher elevations. Localized visibilities under 1/4 mile are likely to occur. If traveling tonight be prepared for rapid fluctuations in visibility and plan some extra time to reach your destination safely. Use low beam headlights and leave plenty of space between vehicles.

INSTRUCTION: N/A

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Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

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

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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