Forecast Details for Tionesta, PA

Recent Locations: Tionesta, PA  
Today: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 39. Calm wind.
Tonight: Partly cloudy, with a low around 28. Calm wind becoming east around 5 mph after midnight.
Friday: Partly sunny, with a high near 42. Southeast wind around 6 mph.
Friday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 34. Southeast wind around 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday: Rain likely, mainly before 1pm. Mostly cloudy, with a high near 50. South wind around 7 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night: Rain, mainly after 1am. Low around 43. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday: Rain. High near 54. Chance of precipitation is 80%.
Sunday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.
Monday: A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 40%.
Monday Night: Mostly cloudy, with a low around 33.
Tuesday: A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 50%.
Tuesday Night: Rain and snow. Low around 35. Chance of precipitation is 80%.
New Year's Day: Rain and snow likely. Mostly cloudy, with a high near 39. Chance of precipitation is 70%.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

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Tomorrows National Weather Map

North America Water Vapor (Moisture)

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North American Water Vapor Map

Weather Topic: What are Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

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