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241 

WWUS20 KWNS 300734

SEL8

SPC WW 300734

MNZ000-NDZ000-301600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 668

NWS Storm Prediction Center Norman OK

230 AM CDT Mon Sep 30 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northwestern Minnesota

  South-central, southeastern and east-central North Dakota



* Effective this Monday morning from 230 AM until 1100 AM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible



SUMMARY...The severe-hail threat should spread northeastward and

become denser across the watch area through midmorning, in step with

the progress of mass response to a low-level cyclone ejecting

northeastward from central SD.  Most of the hail should be

marginally severe, but an isolated, elevated supercell with hail

around 2 inches in diameter is possible.



The severe thunderstorm watch area is approximately along and 60

statute miles north and south of a line from 85 miles west southwest

of Jamestown ND to 10 miles north northeast of Bemidji MN. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU8).



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 667...



AVIATION...A few severe thunderstorms with hail surface and aloft to

2 inches. Extreme turbulence and surface wind gusts to 50 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

24030.



...Edwards

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