Forecast Details for Harrisburg, PA

Recent Locations: Hanover, MD Simpsonville, KY Harrisburg, PA

Current Alerts for Harrisburg, PA: Winter Weather Advisory

Today: Rain or freezing rain, becoming all rain after 11am. High near 39. Southeast wind around 6 mph. Chance of precipitation is 90%. Total daytime ice accumulation of less than a 0.1 of an inch possible.

Tonight: Rain, mainly before 1am. Patchy fog between 2am and 5am. Low around 38. Light and variable wind. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

Wednesday: A chance of rain after 1pm. Patchy fog between 7am and 8am. Otherwise, mostly cloudy, with a high near 53. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night: Rain. Low around 45. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Thursday: Rain likely, with thunderstorms also possible after 4pm. Cloudy, with a high near 58. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night: Rain and possibly a thunderstorm. Low around 48. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday: Mostly cloudy, with a high near 63.

Friday Night: Mostly cloudy, with a low around 46.

Saturday: A chance of rain after 1pm. Mostly cloudy, with a high near 67. Chance of precipitation is 30%.

Saturday Night: Rain likely before 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.

Sunday: Mostly cloudy, with a high near 67.

Sunday Night: Mostly cloudy, with a low around 51.

Monday: Partly sunny, with a high near 69.

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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 Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

Next Topic: Stratus Clouds

Stratocumulus clouds are similar to altocumulus clouds in their fluffy appearance, but have a slightly darker shade due to their additional mass.

A good way to distinguish the two cloud types is to hold your hand out and measure the size of an individual cloud; if it is the size of your thumb it is generally an altocumulus cloud, if it is the size of your hand it is generally a stratocumulus cloud.

It is uncommon for stratocumulus clouds to produce precipitation, but if they do it is usually a light rain or snow.

Next Topic: Stratus Clouds

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