881
WWUS20 KWNS 152157
SEL0
SPC WW 152157
MTZ000-160300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 420
NWS Storm Prediction Center Norman OK
355 PM MDT Sat Jun 15 2024

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
  Central and Eastern Montana

* Effective this Saturday afternoon and evening from 355 PM until
  900 PM MDT.

* Primary threats include...
  Scattered damaging winds and isolated significant gusts to 85
    mph likely
  Isolated very large hail events to 2 inches in diameter possible
  A tornado or two possible

SUMMARY...An intensifying broken band of thunderstorms is forecast
to grow upscale into a squall line this afternoon and into the
evening across the Watch area.  Severe gusts (60-85 mph) will be the
primary hazard with the band of storms.  Large hail may accompany
any more discrete storm on the south flank of the evolving
thunderstorm activity during the evening, as well as perhaps a brief
risk for a tornado.

The severe thunderstorm watch area is approximately along and 95
statute miles east and west of a line from 55 miles north northeast
of Glasgow MT to 35 miles south southwest of Miles City 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 417...WW 418...WW 419...

AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 75 knots. A
few cumulonimbi with maximum tops to 450. Mean storm motion vector
26040.

...Smith