SPC Severe Thunderstorm Watch 304

WW 304 SEVERE TSTM NE SD 252030Z – 260400Z

WW 0304 Image

Severe Thunderstorm Watch Number 304
NWS Storm Prediction Center Norman OK
330 PM CDT Thu Jun 25 2020

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Central Nebraska
  South central into east central South Dakota

* Effective this Thursday afternoon and evening from 330 PM until
  1100 PM CDT.

* Primary threats include...
  Scattered large hail and isolated very large hail events to 2.5
    inches in diameter possible
  Scattered damaging wind gusts to 70 mph possible
  A tornado or two possible

SUMMARY...Thunderstorm development/intensification is expected this
afternoon from south central into east central South Dakota, as well
as farther southwest into north central and central Nebraska.  The
storm environment will favor a mix of supercells and multicell
clusters, with isolated very large hail possible in the first couple
of hours of any supercell development.  The threat for damaging
winds will increase as storms merge into clusters by this evening.

The severe thunderstorm watch area is approximately along and 75
statute miles east and west of a line from 45 miles west of North
Platte NE to 40 miles northeast of Huron SD. 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
2.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector


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