Forecast Details for Waterloo, IA

Recent Locations: Waterloo, IA

Today: Showers and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and noon, then showers likely and possibly a thunderstorm after noon. High near 68. Breezy, with an east wind 15 to 20 mph becoming south southwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 44. West northwest wind 7 to 11 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday: Sunny, with a high near 72. West wind 5 to 7 mph becoming east in the afternoon.

Friday Night: Partly cloudy, with a low around 49. East wind around 7 mph.

Saturday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 65. East wind 7 to 11 mph becoming north in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night: Mostly clear, with a low around 45.

Sunday: Sunny, with a high near 70.

Sunday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 51.

Monday: A 40 percent chance of showers. Mostly sunny, with a high near 76. Breezy.

Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Windy. Chance of precipitation is 70%.

Tuesday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 75. Breezy.

Tuesday Night: A 30 percent chance of showers. Partly cloudy, with a low around 53.

Wednesday: A 30 percent chance of showers. Mostly sunny, with a high near 75. Breezy.

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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 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

Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds