553
WWUS20 KWNS 152024
SEL7
SPC WW 152024
SDZ000-160300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 417
NWS Storm Prediction Center Norman OK
225 PM MDT Sat Jun 15 2024

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
  Western and Central South Dakota

* Effective this Saturday afternoon and evening from 225 PM until
  900 PM MDT.

* Primary threats include...
  Scattered damaging winds and isolated significant gusts to 75
    mph possible
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible

SUMMARY...Thunderstorms should continue developing over the Black
Hills this afternoon. Large hail around 1-2 inches in diameter along
with severe/damaging winds of 60-75 mph will be possible as this
convection spreads eastward across parts of western and central
South Dakota through this evening.

The severe thunderstorm watch area is approximately along and 85
statute miles east and west of a line from Lemmon SD to 35 miles
west southwest of Philip SD. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU7).

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.

&&

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 500. Mean storm motion vector
27035.

...Gleason