Weather Alert in South Dakota
Flood Warning issued August 25 at 11:48PM CDT by NWS Aberdeen SD
AREAS AFFECTED: Brown, SD; Spink, SD
DESCRIPTION: ...The National Weather Service in Aberdeen SD has issued a Flood Warning for the following rivers in South Dakota... James River near Stratford affecting Brown and Spink Counties. .For sites with a river forecast, the forecast includes precipitation through the next 24 hours. Any future precipitation could affect the forecasts. * WHAT...Minor flooding is forecast. * WHERE...James River near Stratford. * WHEN...From late tonight until further notice. * IMPACTS...At 14.0 feet, Significant amounts of agricultural lands begin flooding. * ADDITIONAL DETAILS... - At 10:45 PM CDT Monday the stage was 14.0 feet. - Forecast...The river is expected to rise above flood stage just after midnight tonight and continue rising to 14.4 feet Saturday morning. Additional rises are possible thereafter. - Flood stage is 14.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. Additional information is available at www.weather.gov/abr. The next statement will be issued by Wednesday morning at 800 AM CDT.
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Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
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