SPC Severe Thunderstorm Watch 122

WW 122 SEVERE TSTM MT ND 262335Z - 270700Z

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 122
NWS Storm Prediction Center Norman OK
535 PM MDT Sat May 26 2018

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Eastern Montana
  Western North Dakota

* Effective this Saturday afternoon and Sunday morning from 535
  PM until 100 AM MDT.

* Primary threats include...
  Scattered damaging winds likely with isolated significant gusts
    to 75 mph possible
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible

SUMMARY...Isolated to scattered storms should initially develop
across parts of northeast Montana with a risk for severe hail and
locally strong gusts. This activity will likely develop into a
forward-moving cluster with embedded linear, bowing segments
potentially producing severe wind gusts later this evening across
parts of eastern Montana into western North Dakota.

The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 30 miles south
southwest of Glasgow MT to 30 miles east of Dickinson ND. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU2).

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 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
28035.

...Grams

Read more

from SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0122.html