Weather Alert in South Dakota

Recent Locations: Hosmer, SD  
Current Alerts for Hosmer, SD: Flash Flood Warning

Flood Warning issued July 1 at 8:50AM CDT by NWS Sioux Falls SD

AREAS AFFECTED: Brookings, SD

DESCRIPTION: ...Observed flooding changed from Minor to Moderate severity for the following rivers in South Dakota... Big Sioux River near Bruce affecting Brookings County. * WHAT...Moderate flooding is occurring. * WHERE...Big Sioux River near Bruce. * WHEN...Until further notice. * IMPACTS...At 10.5 feet, 198th Street and 199th Street between 466th and 467th avenues are flooded, as is 202nd Street between 465th and 467th avenues, and 465th Avenue between 203rd and 204th streets. * ADDITIONAL DETAILS... - At 7:45 AM CDT Tuesday the stage was 10.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:45 AM CDT Tuesday was 10.1 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 Wednesday morning.

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Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds

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