Forecast Details for Eureka, SD

Recent Locations: Ocean View, NJ Tokio, ND Eureka, SD

Current Alerts for Eureka, SD: Red Flag Warning

This Afternoon: Partly sunny and hot, with a high near 92. Breezy, with a south wind 23 to 29 mph.

Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 50. Breezy, with a south wind 16 to 26 mph. Chance of precipitation is 50%.

Thursday: A chance of showers, mainly between 3pm and 4pm. Mostly sunny, with a high near 66. Windy, with a west southwest wind 14 to 24 mph increasing to 28 to 38 mph. Chance of precipitation is 40%.

Thursday Night: Partly cloudy, with a low around 33. Windy, with a west northwest wind 31 to 36 mph decreasing to 20 to 25 mph after midnight. Winds could gust as high as 44 mph.

Friday: Partly sunny, with a high near 53. Breezy, with a west wind 17 to 22 mph.

Friday Night: A slight chance of rain and snow showers between 1am and 4am, then a slight chance of snow showers after 4am. Mostly cloudy, with a low around 31. West northwest wind 9 to 17 mph. Chance of precipitation is 20%.

Saturday: A slight chance of snow showers before 7am, then a slight chance of rain and snow showers between 7am and 1pm, then a slight chance of rain showers after 1pm. Partly sunny, with a high near 52. West wind 10 to 17 mph. Chance of precipitation is 20%.

Saturday Night: A chance of rain showers before 4am, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. West northwest wind 7 to 16 mph becoming northeast after midnight. Chance of precipitation is 30%.

Sunday: A chance of rain and snow showers before 10am, then rain showers likely. Mostly cloudy, with a high near 51. Breezy, with a northeast wind 10 to 20 mph. Chance of precipitation is 60%.

Sunday Night: Rain showers likely before 4am, then rain and snow showers likely. Mostly cloudy, with a low around 35. Breezy. Chance of precipitation is 70%.

Monday: Rain and snow showers likely. Mostly cloudy, with a high near 51. Breezy. Chance of precipitation is 60%.

Monday Night: A slight chance of rain and snow showers. Mostly cloudy, with a low around 30. Blustery. Chance of precipitation is 20%.

Tuesday: A slight chance of rain and snow showers. Partly sunny, with a high near 52. Chance of precipitation is 20%.

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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 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