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Public Information Statement
National Weather Service Wichita KS
700 AM CDT Tue Jul 23 2024

...ON THIS DATE IN WEATHER HISTORY...

In 2010, huge severe thunderstorms hammered parts of
Central South Dakota with destructive hail.  Many
hailstones were 6 to 8 INCHES IN DIAMETER.  The largest
hailstone reached an incredible 8 inches in diameter and
weighed 1.94 pounds, making it the largest and heaviest
hailstone in United States history.  The humongous
hailstone landed in Vivian, located about 15 miles south
of Pierre.  No doubt, holes were punched in many roofs.
It is believed that the incredibly intense updrafts
associated with the Vivian severe thunderstorm ranged
from 160 to 180 MPH.  These extremely dangerous
thunderstorms also produced 80 to 90 mph winds and two
tornadoes.

&&

Minnesota has been referred to as the state with 10,000
lakes.In 1987, violent thunderstorms practically turned
Minneapolis St.  Paul into the Twin Cities with 10,000
lakes.Around 10 inches of rain inundated Minneapolis in
six and a half hours, of which 5.26 inches swamped the
city in only two hours.  The flash flooding was obviously
appalling as it turned streets into rushing rivers,
parking lots into lakes, and storm sewers into spouting
geysers.  The flooding caused $21.3 million damage and 2
people drowned in the disaster.  In addition, an F3
tornado struck nearby Maple Grove, causing an additional
$5 million damage.  Parts of Southwest Minnesota were
hammered by a barrage of baseball sized hail.

$$
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