Weather Alert in South Dakota
Severe Thunderstorm Warning issued August 13 at 4:26PM MDT until August 13 at 5:30PM MDT by NWS Rapid City SD
AREAS AFFECTED: Meade, SD; Pennington, SD
DESCRIPTION: SVRUNR The National Weather Service in Rapid City has issued a * Severe Thunderstorm Warning for... Southwestern Meade County in west central South Dakota... South central Pennington County in west central South Dakota... * Until 530 PM MDT. * At 426 PM MDT, severe thunderstorms were located along a line extending from 3 miles west of Vale to 2 miles northeast of Dalton Lake to near Sylvan Lake, moving east at 50 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Rapid City, Rapid Valley, Ellsworth Air Force Base, Box Elder, Summerset, Black Hawk, New Underwood, Johnson Siding, Union Center, Keystone, Piedmont, Hisega, Enning, Owanka, Elm Springs, Caputa, Wicksville, Hayward, Rockerville, and Farmingdale. This includes Interstate 90 in South Dakota between Mile Markers 44 and 92.
INSTRUCTION: For your protection move to an interior room on the lowest floor of a building.
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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
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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