Weather Alert in Iowa

Recent Locations: Adams, MN   Carman, IL   Cylinder, IA  
Current Alerts for Cylinder, IA: Air Quality Alert

Flood Warning issued August 2 at 3:06AM CDT until August 4 at 1:00AM CDT by NWS Des Moines IA

AREAS AFFECTED: Black Hawk, IA

DESCRIPTION: ...The Flood Warning continues for the following rivers in Iowa... Iowa River near Tama Hwy E49 affecting Tama and Poweshiek Counties. Cedar River at Cedar Falls affecting Black Hawk County. Shell Rock River at Shell Rock affecting Bremer, Butler and Black Hawk Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...The Cedar River at Cedar Falls, or from the West Fork Cedar River to the Cedar Falls-Waterloo city limits. * WHEN...Until early Monday morning. * IMPACTS...At 91.0 feet, Water affects Big Woods Rd south of Dunkerton Rd as well as the north parking lot of Island Park. * ADDITIONAL DETAILS... - At 1:45 AM CDT Saturday the stage was 90.8 feet. - Forecast...The river is expected to fall below flood stage tomorrow evening and continue falling to 83.9 feet Friday evening. - Flood stage is 89.0 feet.

INSTRUCTION: For the latest waterway observations and forecasts refer to weather.gov/desmoines/water. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. River forecasts include observed precipitation plus forecast precipitation over the next 24 hours.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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North America Water Vapor (Moisture)

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Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Contrails Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Cumulus Clouds Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

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