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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 267
NWS Storm Prediction Center Norman OK
350 PM CDT Sun Jul 8 2018
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
West central to northeastern Minnesota
Southeastern North Dakota
Northeastern South Dakota
Extreme northwestern Wisconsin
* Effective this Sunday afternoon and evening from 350 PM until
1100 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 70 mph possible
A tornado or two possible
SUMMARY...Thunderstorm development/intensification is expected the
next few hours from southeastern North Dakota eastward into
Minnesota. The storm environment will initially favor supercells
with large hail and the potential for a tornado or two. Storms
should grow upscale into clusters and line segments later this
evening, when the primary threat will become damaging winds and
The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 120 miles west
southwest of Detroit Lakes MN to 40 miles south southeast of Ely MN.
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
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector