914
WWUS20 KWNS 172230
SEL0
SPC WW 172230
MTZ000-WYZ000-180500-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 430
NWS Storm Prediction Center Norman OK
430 PM MDT Mon Jun 17 2024

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
  Southeastern Montana
  East-central and northeastern Wyoming

* Effective this Monday afternoon and evening from 430 PM until
  1100 PM MDT.

* Primary threats include...
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible
  Isolated damaging wind gusts to 70 mph possible

SUMMARY...Thunderstorms should continue to develop on the east side
of higher terrain around the Bighorns and northern Laramie Range,
and move northward to northeastward.  Activity should cross a narrow
corridor of favorable instability and shear for large hail and
severe gusts to result, before weakening closer to the Dakotas
border.

The severe thunderstorm watch area is approximately along and 50
statute miles east and west of a line from 110 miles south of
Gillette WY to 30 miles west northwest of Baker MT. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU0).

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 429...

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 500. Mean storm motion vector
21030.

...Edwards