Forecast Details for Port Allegany, PA

Recent Locations: Buffalo, WY Port Allegany, PA Marshall, TX

Current Alerts for Port Allegany, PA: Winter Weather Advisory

Today: Mostly sunny, with a high near 28. Wind chill values as low as -5. Northwest wind 6 to 9 mph, with gusts as high as 20 mph.

Tonight: Snow, mainly before 4am. Low around 20. Light south wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Wednesday: Snow showers, mainly before 1pm. High near 39. West wind 8 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Wednesday Night: Mostly cloudy, with a low around 17. West wind 5 to 7 mph becoming calm after midnight. Winds could gust as high as 20 mph.

Thursday: A chance of snow showers. Partly sunny, with a high near 35. Calm wind becoming west around 5 mph. Chance of precipitation is 40%.

Thursday Night: A slight chance of snow showers before 1am. Partly cloudy, with a low around 15. Chance of precipitation is 20%.

Friday: Sunny, with a high near 43.

Friday Night: Partly cloudy, with a low around 27.

Saturday: Mostly sunny, with a high near 48.

Saturday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.

Sunday: Partly sunny, with a high near 29.

Sunday Night: A chance of snow showers. Mostly cloudy, with a low around 10. Chance of precipitation is 30%.

Monday: A chance of snow showers. Partly sunny, with a high near 28. Chance of precipitation is 40%.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds

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