SPC Severe Thunderstorm Watch 667

SPC Severe Thunderstorm Watch 667

WW 667 SEVERE TSTM ND SD 042225Z – 050400Z

Severe Thunderstorm Watch Number 667
NWS Storm Prediction Center Norman OK
525 PM CDT Mon Sep 4 2023

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Southern North Dakota
North-central South Dakota

* Effective this Monday afternoon and evening from 525 PM until
1100 PM CDT.

* Primary threats include…
Scattered damaging winds and isolated significant gusts to 90
mph likely
Isolated large hail events to 1.5 inches in diameter possible

SUMMARY…A small cluster over northwest South Dakota with a history
of severe wind gusts should intensify and likely produce a confined
swath of severe into portions of southern North Dakota through late

The severe thunderstorm watch area is approximately along and 85
statute miles either side of a line from 25 miles north northwest of
Bismarck ND to 55 miles east southeast of Mobridge SD. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU7).


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
1.5 inches. Extreme turbulence and surface wind gusts to 80 knots. A
few cumulonimbi with maximum tops to 450. Mean storm motion vector


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