SPC Severe Thunderstorm Watch 253

WW 253 SEVERE TSTM NE SD 110205Z – 110800Z

WW 0253 Image

Severe Thunderstorm Watch Number 253
NWS Storm Prediction Center Norman OK
905 PM CDT Thu Jun 10 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  western and central Nebraska
  western and central South Dakota

* Effective this Thursday night and Friday morning from 905 PM
  until 300 AM CDT.

* Primary threats include...
  Widespread damaging winds and isolated significant gusts to 80
    mph likely
  Scattered large hail likely with isolated very large hail events
    to 2 inches in diameter possible
  A tornado or two possible

SUMMARY...Storms are expected to increase in coverage with initial
supercells possible, transitioning to a squall line. Large hail,
damaging wind and a couple of tornadoes are possible this evening
into tonight.

The severe thunderstorm watch area is approximately along and 120
statute miles east and west of a line from 75 miles west northwest
of Mobridge SD to 55 miles southeast of Alliance NE. For a complete
depiction of the watch see the associated watch outline update


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



AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 70 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector


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