Forecast Details for Box Elder, SD

Recent Locations: Box Elder, SD

Current Alerts for Box Elder, SD: Wind Advisory

Tonight: Mostly clear, with a low around 54. Southwest wind 8 to 11 mph becoming west in the evening. Winds could gust as high as 21 mph.

Wednesday: Sunny, with a high near 77. Breezy, with a northwest wind 8 to 18 mph increasing to 18 to 28 mph in the afternoon. Winds could gust as high as 45 mph.

Wednesday Night: Clear, with a low around 50. Breezy, with a northwest wind 19 to 24 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 37 mph.

Thursday: Sunny, with a high near 81. West wind 8 to 15 mph becoming north in the afternoon. Winds could gust as high as 26 mph.

Thursday Night: Mostly clear, with a low around 53. North wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 25 mph.

Friday: Sunny, with a high near 82. West wind 6 to 13 mph becoming east in the afternoon. Winds could gust as high as 23 mph.

Friday Night: Partly cloudy, with a low around 54. East wind 8 to 13 mph becoming west after midnight. Winds could gust as high as 23 mph.

Saturday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 78. North wind 8 to 13 mph becoming northeast in the afternoon. Winds could gust as high as 24 mph.

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

Sunday: Sunny, with a high near 78.

Sunday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 53.

Monday: A chance of showers and thunderstorms. Mostly sunny, with a high near 77.

Monday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 54.

Tuesday: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 80.

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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)

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 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