Tuesday, June 30, 2020

SPC Severe Thunderstorm Watch 320

WW 320 SEVERE TSTM NE SD 302335Z - 010600Z
WW 0320 Image

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 320
NWS Storm Prediction Center Norman OK
635 PM CDT Tue Jun 30 2020

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Central and Eastern Nebraska
  Southeast South Dakota

* Effective this Tuesday night and Wednesday morning from 635 PM
  until 100 AM CDT.

* Primary threats include...
  Scattered damaging winds and isolated significant gusts to 75
    mph possible
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible
  A tornado or two possible

SUMMARY...Severe thunderstorms are expected to develop near an
eastward-advancing cold front this evening, initially across
southeast South Dakota south-southwestward into
east-central/south-central Nebraska. Isolated large hail can be
expected, with severe-caliber wind gusts becoming more common into
mid/late evening as storms linearly organize.

The severe thunderstorm watch area is approximately along and 65
statute miles east and west of a line from 35 miles east northeast
of Huron SD to 45 miles south southwest of Hastings 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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 319...

AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
24025.

...Guyer

Read more

from SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0320.html

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