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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 399
NWS Storm Prediction Center Norman OK
320 PM CDT Fri Jul 24 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
western and central Nebraska
central South Dakota
* Effective this Friday afternoon and evening from 320 PM until
1000 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 65 mph possible
SUMMARY...Isolated storms have developed across portions of western
South Dakota, and should increase with time across this area and
southward into Nebraska. As storms move northeastward through the
evening hours, large hail and locally damaging winds are expected.
The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 20 miles north northwest
of Mobridge SD to 35 miles west of North Platte NE. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU9).
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 55 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector