914
WWUS20 KWNS 280419
SEL9
SPC WW 280419
SDZ000-280800-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 479
NWS Storm Prediction Center Norman OK
1120 PM CDT Thu Jun 27 2024

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
  Eastern South Dakota

* Effective this Thursday night and Friday morning from 1120 PM
  until 300 AM CDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible

SUMMARY...A long-lived severe squall line over central South Dakota
will continue east into eastern South Dakota tonight.  Scattered
severe gusts 60-70 mph are possible with the more intense embedded
thunderstorm cores and outflow surges in the squall line.

The severe thunderstorm watch area is approximately along and 40
statute miles east and west of a line from 30 miles northeast of
Aberdeen SD to 35 miles south of Huron SD. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU9).

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 477...WW 478...

AVIATION...A few severe thunderstorms with hail surface and aloft to
0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
27045.

...Smith