SPC Severe Thunderstorm Watch 566

WW 566 SEVERE TSTM NE SD 100030Z - 100600Z

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 566
NWS Storm Prediction Center Norman OK
730 PM CDT Fri Aug 9 2019

The NWS Storm Prediction Center has issued a

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

* Effective this Friday night and Saturday morning from 730 PM
  until 100 AM CDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph likely
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible
  A tornado or two possible

SUMMARY...A cluster of intense thunderstorms over southern South
Dakota will track southeastward across the watch area this evening. 
Damaging winds and hail are possible in the more organized cells.

The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 35 miles east southeast
of Oneill NE to 35 miles west northwest of Yankton 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 564...WW 565...

AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
29030.

...Hart

Read more

from SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0566.html