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URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 209
NWS Storm Prediction Center Norman OK
345 PM CDT Thu May 12 2022
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Central and Northeast South Dakota
* Effective this Thursday afternoon and evening from 345 PM until
1000 PM CDT.
* Primary threats include...
A few tornadoes and a couple intense tornadoes possible
Scattered damaging winds likely with isolated significant gusts
to 90 mph possible
Scattered large hail likely with isolated very large hail events
to 2.5 inches in diameter possible
SUMMARY...Severe storms including supercells are expected to
initially develop through late afternoon across central South
Dakota. Large hail and damaging winds are likely, and tornado
potential will be maximized near a warm front including the general
vicinity from Pierre/Chamberlain to Aberdeen and Huron. Over time,
storm mergers will lead to the evolution of one or more linear
clusters this evening with a heightened damaging wind potential.
The tornado watch area is approximately along and 60 statute miles
north and south of a line from 35 miles northwest of Pierre SD to 30
miles east northeast of Watertown SD. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.
OTHER WATCH INFORMATION...CONTINUE...WW 205...WW 206...WW
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 2.5 inches. Extreme turbulence and surface wind
gusts to 80 knots. A few cumulonimbi with maximum tops to 550. Mean
storm motion vector 22040.