WW 366 SEVERE TSTM SD 240225Z – 241000Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 366
NWS Storm Prediction Center Norman OK
925 PM CDT Fri Jun 23 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Central and eastern South Dakota
* Effective this Friday night and Saturday morning from 925 PM
until 500 AM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph likely
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
A tornado or two possible
SUMMARY...Clusters of storms, including a few supercells initially,
will likely grow upscale into a larger convective system that will
spread eastward across South Dakota through the overnight hours.
The primary threats will be severe outflow gusts to 75 mph and large
hail of 1-2 inches in diameter, though a tornado or two may also
occur with embedded circulations.
The severe thunderstorm watch area is approximately along and 90
statute miles east and west of a line from 55 miles northeast of
Pierre SD to 55 miles south southeast of Chamberlain SD. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU6).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 362...WW 363...WW 365...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
26035.
...Thompson
