Forecast Details for Glen Rock, NJ

Recent Locations: Chandlersville, OH Davenport, CA Glen Rock, NJ

Tonight: Mostly clear, with a low around 67. South wind around 6 mph.

Saturday: A chance of showers, then showers and thunderstorms after 2pm. Some of the storms could be severe and produce heavy rainfall. Patchy fog before 9am. High near 86. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night: Showers and thunderstorms before 11pm, then showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Some of the storms could be severe and produce heavy rainfall. Low around 59. North wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Sunday: A chance of showers and thunderstorms before 8am, then a chance of rain between 8am and 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 73. North wind around 6 mph. Chance of precipitation is 30%.

Sunday Night: Partly cloudy, with a low around 54. Light northwest wind.

Monday: Sunny, with a high near 75.

Monday Night: Mostly clear, with a low around 53.

Tuesday: Sunny, with a high near 76.

Tuesday Night: Partly cloudy, with a low around 55.

Wednesday: Partly sunny, with a high near 75.

Wednesday Night: Mostly cloudy, with a low around 57.

Thursday: Mostly sunny, with a high near 79.

Thursday Night: Mostly clear, with a low around 54.

Friday: Sunny, with a high near 73.

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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

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North America Water Vapor (Moisture)

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Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet