Forecast Details for Whitehall, PA

Recent Locations: Whitehall, PA  
Tonight: Rain and snow, mainly after 1am. Low around 34. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than a half inch possible.
Tuesday: A slight chance of rain and snow showers before 7am, then a chance of rain showers between 7am and 11am. Cloudy, with a high near 39. Southwest wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Tuesday Night: Mostly cloudy, with a low around 32. Light and variable wind.
Christmas Day: Mostly cloudy, with a high near 39. Calm wind.
Wednesday Night: A slight chance of rain before 10pm, then a slight chance of snow. Mostly cloudy, with a low around 30. Calm wind. Chance of precipitation is 20%.
Thursday: Mostly sunny, with a high near 42.
Thursday Night: Partly cloudy, with a low around 30.
Friday: Mostly sunny, with a high near 48.
Friday Night: Mostly cloudy, with a low around 36.
Saturday: A chance of rain. Mostly cloudy, with a high near 52. Chance of precipitation is 40%.
Saturday Night: Rain likely. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Sunday: Rain likely. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.
Sunday Night: Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.
Monday: A chance of rain. Mostly cloudy, with a high near 47. Chance of precipitation is 50%.

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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 is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow

Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

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