WW 473 SEVERE TSTM MT 111955Z – 120300Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 473
NWS Storm Prediction Center Norman OK
155 PM MDT Tue Jul 11 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Eastern Montana
* Effective this Tuesday afternoon and evening from 155 PM until
900 PM MDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2.5
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Thunderstorm coverage is expected to gradually increase as
the airmass continues to destabilize this afternoon. Moderate
buoyancy and strong shear is forecast to support supercell capable
of large to very large hail and damaging wind gusts.
The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 15 miles north northwest
of Glasgow MT to 25 miles west southwest of Broadus MT. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU3).
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
2.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
28030.
...Mosier
