SPC Severe Thunderstorm Watch 550



WW 550 SEVERE TSTM NE SD 042125Z – 050300Z

WW 0550 Image

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 550
NWS Storm Prediction Center Norman OK
325 PM MDT Sun Aug 4 2019

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Parts of north central and northwestern Nebraska
  Parts of south central and southwestern South Dakota

* Effective this Sunday afternoon and evening from 325 PM until
  900 PM MDT.

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

SUMMARY...Clusters of storms, including embedded supercells, will
likely persist while moving southeastward along a residual boundary
from South Dakota into Nebraska.  Damaging winds and large hail will
be the main threats into this evening.

The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 85 miles west of
Valentine NE to 25 miles northeast of Ainsworth NE. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU0).

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
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 600. Mean storm motion vector
31025.

...Thompson

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