Forecast Details for Harvey, IA

Recent Locations: Beaumont, TX   Long Beach, CA   Harvey, IA  
Tonight: Mostly clear, with a low around 56. West wind around 6 mph becoming north northeast after midnight.
Sunday: A chance of showers, with thunderstorms also possible after 4pm. Increasing clouds, with a high near 83. East northeast wind 6 to 10 mph becoming southeast in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. East southeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. South wind 9 to 11 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night: Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 64. Southeast wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 83. Breezy. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night: Showers and thunderstorms likely, mainly before 1am. Partly cloudy, with a low around 52. Breezy. Chance of precipitation is 60%.
Wednesday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 71.
Wednesday Night: Mostly clear, with a low around 51.
Thursday: Sunny, with a high near 76.
Thursday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Friday: A 40 percent chance of showers. Mostly sunny, with a high near 77.
Friday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 55.
Saturday: A 40 percent chance of showers. Partly sunny, with a high near 74.

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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

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

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.

North American Water Vapor Map

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

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds