Weather Alert in Minnesota
Severe Thunderstorm Warning issued May 15 at 4:41AM CDT until May 15 at 5:30AM CDT by NWS Aberdeen SD
AREAS AFFECTED: Big Stone, MN; Traverse, MN; Grant, SD; Roberts, SD
DESCRIPTION: SVRABR The National Weather Service in Aberdeen has issued a * Severe Thunderstorm Warning for... Southeastern Traverse County in west central Minnesota... Big Stone County in west central Minnesota... Southeastern Roberts County in northeastern South Dakota... Northeastern Grant County in northeastern South Dakota... * Until 530 AM CDT. * At 440 AM CDT, a severe thunderstorm was located near Clinton, moving north at 30 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near... Clinton and Big Stone Colony around 445 AM CDT. Graceville and Barry around 450 AM CDT. Collis around 500 AM CDT. Other locations in the path of this severe thunderstorm include Dumont.
INSTRUCTION: For your protection move to an interior room on the lowest floor of a building. To report severe weather, contact your nearest law enforcement agency. They will send your report to the National Weather Service office in Aberdeen.
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Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
Weather Topic: What are Shelf Clouds?
Home - Education - Cloud Types - 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
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