Forecast Details for Harrison, NY

Recent Locations: Harrison, NY

Current Alerts for Harrison, NY: Coastal Flood Statement

This Afternoon: Sunny, with a high near 77. West wind around 6 mph.

Tonight: A 30 percent chance of showers after 2am. Increasing clouds, with a low around 56. South wind around 6 mph.

Wednesday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 75. South wind 7 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: A 30 percent chance of showers and thunderstorms before 8pm. Increasing clouds, with a low around 57. Southwest wind 5 to 7 mph becoming northwest after midnight.

Thursday: A chance of rain, then rain and possibly a thunderstorm after 2pm. High near 66. East wind 6 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: Rain and possibly a thunderstorm before 2am, then a chance of rain. Low around 52. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: A chance of rain before 8am, then a chance of showers after 8am. Mostly cloudy, with a high near 60. Chance of precipitation is 50%.

Friday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 48.

Saturday: Partly sunny, with a high near 62.

Saturday Night: Mostly cloudy, with a low around 49.

Sunday: A 30 percent chance of showers. Partly sunny, with a high near 65.

Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 50.

Monday: A 30 percent chance of showers. Partly sunny, with a high near 68.

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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 are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

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