Forecast Details for Dennison, MN

Recent Locations: Enterprise, OR Somerville, MA Dennison, MN

Current Alerts for Dennison, MN: Special Weather Statement

Tonight: Partly cloudy, with a low around 61. South wind around 15 mph, with gusts as high as 25 mph.

Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. Some of the storms could be severe. High near 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night: Showers and thunderstorms likely, mainly before 11pm. Some of the storms could be severe. Mostly cloudy, with a low around 45. South southwest wind 10 to 15 mph becoming west northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday: Sunny, with a high near 61. West northwest wind 10 to 15 mph.

Friday Night: Mostly clear, with a low around 40. Northwest wind 5 to 10 mph.

Saturday: Partly sunny, with a high near 60. Northwest wind 5 to 10 mph becoming east northeast in the afternoon.

Saturday Night: Mostly cloudy, with a low around 44. Northeast wind around 5 mph becoming calm.

Sunday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 65. East southeast wind 5 to 15 mph.

Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 48. Breezy, with an east southeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

Monday: Showers. High near 59. Breezy, with an east southeast wind 15 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 80%.

Monday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 41. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 25 mph.

Tuesday: A 20 percent chance of showers. Partly sunny, with a high near 58. West northwest wind around 15 mph.

Tuesday Night: Mostly cloudy, with a low around 37. West northwest wind 5 to 10 mph.

Wednesday: A 20 percent chance of showers. Mostly sunny, with a high near 56. Light west northwest wind becoming northwest 5 to 10 mph in the morning.

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North America Water Vapor (Moisture)

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Weather Topic: What are Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds