URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 557
NWS Storm Prediction Center Norman OK
455 PM CDT Tue Jul 29 2025

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Far Northeast Nebraska
  Far Southeast South Dakota

* Effective this Tuesday afternoon and evening from 455 PM until
  1000 PM CDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible
  Isolated large hail events to 1.5 inches in diameter possible

SUMMARY...Thunderstorms across south-central SD are organizing into
a convective line that will likely continue southeastward into the
very unstable airmass downstream across far southeast SD and far
northeast NE. Strong gusts are possible with this line as it moves
into this region this afternoon and evening.

The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 30 miles south
southwest of Chamberlain SD to 15 miles east of Yankton 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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 556...

AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
29035.

...Mosier