202
WWUS20 KWNS 302135
SEL2
SPC WW 302135
MTZ000-010200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 492
NWS Storm Prediction Center Norman OK
335 PM MDT Sun Jun 30 2024

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
  Southwest into Central Montana

* Effective this Sunday afternoon and evening from 335 PM until
  800 PM MDT.

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

SUMMARY...Widely scattered to scattered thunderstorms are forecast
to continue to develop over southwest Montana and move
east-northeast into central Montana late this afternoon into the
evening.  A couple of supercells are possible initially with an
attendant risk for large hail (1 to 2 inches in diameter) and severe
gusts.  Upscale growth into a linear thunderstorm cluster is
expected by early evening as storms move into the eastern parts of
the Watch.  Severe gusts 60-75 mph will be possible with this
activity.

The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 35 miles west southwest
of Bozeman MT to 50 miles north northeast of Billings MT. 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.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 489...WW 490...WW 491...

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 450. Mean storm motion vector
24040.

...Smith