Weather Alert in South Dakota

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Flood Warning issued June 30 at 10:56AM CDT by NWS Sioux Falls SD

AREAS AFFECTED: Brookings, SD

DESCRIPTION: ...The Flood Warning continues for the following rivers in South Dakota... Big Sioux River near Brookings affecting Moody and Brookings Counties. Sixmile Creek near Brookings affecting Brookings County. Medary Creek near Medary affecting Brookings County. Big Sioux River near Bruce affecting Brookings County. Big Sioux River near Estelline affecting Hamlin and Brookings Counties. * WHAT...Minor flooding is occurring. * WHERE...Big Sioux River near Bruce. * WHEN...Until further notice. * IMPACTS...At 9.5 feet, The right bank overflows flooding agricultural lands for as much as 1/4 mile. * ADDITIONAL DETAILS... - At 9:45 AM CDT Monday the stage was 9.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:45 AM CDT Monday was 9.1 feet. - Forecast...No forecast is available for this location. - Flood stage is 8.0 feet. - Stay up to date with the latest river observations and forecasts at: www.water.noaa.gov

INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional forecast information is available at www.weather.gov/siouxfalls. The next statement will be issued by Tuesday afternoon.

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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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