Forecast Details for Sully, IA

Recent Locations: Vandervoort, AR Salkum, WA Sully, IA

This Afternoon: A 30 percent chance of showers, mainly after 5pm. Cloudy, with a high near 50. Breezy, with an east wind around 18 mph, with gusts as high as 26 mph. New precipitation amounts of less than a tenth of an inch possible.

Tonight: A chance of showers, then showers and possibly a thunderstorm after 7pm. Low around 40. Breezy, with an east wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Thursday: Showers and thunderstorms, mainly before 4pm. High near 70. Windy, with an east southeast wind 15 to 21 mph becoming southwest in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Thursday Night: Partly cloudy, with a low around 37. Breezy, with a west wind 13 to 18 mph becoming north 5 to 10 mph after midnight. Winds could gust as high as 29 mph.

Friday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 67. East wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Friday Night: Showers likely and possibly a thunderstorm before 1am, then a slight chance of showers. Mostly cloudy, with a low around 36. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Saturday: Partly sunny, with a high near 46. Windy.

Saturday Night: Partly cloudy, with a low around 31. Windy.

Sunday: Sunny, with a high near 54.

Sunday Night: Mostly clear, with a low around 34.

Monday: Partly sunny, with a high near 54.

Monday Night: Mostly cloudy, with a low around 29.

Tuesday: Mostly sunny, with a high near 51.

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Current U.S. National Radar--Current

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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