WWUS20 KWNS 122022
SEL3
SPC WW 122022
NEZ000-SDZ000-130300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 273
NWS Storm Prediction Center Norman OK
325 PM CDT Thu Jul 12 2018

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  North central and northeastern Nebraska
  South central and southeastern South Dakota

* Effective this Thursday afternoon and evening from 325 PM until
  1000 PM CDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible
  Isolated large hail events to 1 inch in diameter possible

SUMMARY...Thunderstorms should increase in coverage/intensity along
a slow-moving front from north central Nebraska into southeastern
South Dakota this afternoon into this evening.  The main threat will
be damaging winds with multicell storm clusters developing toward
the east-northeast.

The severe thunderstorm watch area is approximately along and 55
statute miles north and south of a line from 45 miles west of Mullen
NE to 10 miles east of Sioux Falls SD. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
WOU3).

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
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 600. Mean storm motion vector
24020.

...Thompson