Forecast Details for Lake Harmony, PA

Recent Locations: Darien, WI Monon, IN Lake Harmony, PA

Current Alerts for Lake Harmony, PA: Winter Storm Watch

Today: Mostly cloudy, with a high near 38. West wind around 5 mph.

Tonight: A chance of snow, mainly after 5am. Mostly cloudy, with a low around 26. Calm wind. Chance of precipitation is 30%. Little or no snow accumulation expected.

Sunday: Snow, mainly after 7am. High near 31. East wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Sunday Night: Snow. The snow could be heavy at times. Patchy blowing snow after 1am. Low around 22. Blustery, with a north wind 10 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

Monday: A chance of snow, mainly before 1pm. Areas of blowing snow. Mostly cloudy, with a high near 29. Blustery, with a north wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 50%. New snow accumulation of 2 to 4 inches possible.

Monday Night: Mostly cloudy, with a low around 14. Blustery.

Tuesday: Partly sunny, with a high near 25.

Tuesday Night: Mostly cloudy, with a low around 14.

Wednesday: A chance of snow. Mostly cloudy, with a high near 34. Chance of precipitation is 40%.

Wednesday Night: A chance of snow. Mostly cloudy, with a low around 25. Chance of precipitation is 50%.

Thursday: A chance of rain. Mostly cloudy, with a high near 39. Chance of precipitation is 50%.

Thursday Night: A chance of rain and snow. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.

Friday: Mostly sunny, with a high near 36.

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 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