085
WWUS20 KWNS 090233
SEL8
SPC WW 090233
IAZ000-MNZ000-SDZ000-WIZ000-LSZ000-090900-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 578
NWS Storm Prediction Center Norman OK
935 PM CDT Fri Aug 8 2025

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
  Northwest Iowa
  Minnesota
  Far Eastern South Dakota
  Northwest Wisconsin
  Lake Superior

* Effective this Friday night and Saturday morning from 935 PM
  until 400 AM CDT.

* Primary threats include...
  Scattered damaging winds likely with isolated significant gusts
    to 80 mph possible
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible
  A tornado or two possible

SUMMARY...Severe storms are expected to develop through
mid/late-evening initially across western/north-central Minnesota
and possibly far east/southeast South Dakota and northwest Iowa,
before moving into east/northeast Minnesota and northwest Wisconsin
overnight. Large hail is possible, but damaging winds may become the
most common hazard. Some tornado risk may exist as well.

The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 55 miles northwest of Ely
MN to 35 miles southwest of Worthington 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.

&&

AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 70 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
24025.

...Guyer