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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 307
NWS Storm Prediction Center Norman OK
445 PM MDT Thu Jun 8 2017
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Western and Central Montana
* Effective this Thursday afternoon and evening from 445 PM until
1100 PM MDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated very large hail events to 2 inches in diameter possible
SUMMARY...Thunderstorms are increasing in intensity from southwest
Montana into northwest Montana. These storms are likely to spread
northeastward through the evening with stronger storms capable of
producing severe wind gusts and occasional large hail.
The severe thunderstorm watch area is approximately along and 95
statute miles east and west of a line from 30 miles west of Helena
MT to 25 miles north northeast of Cut Bank MT. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU7).
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
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 450. Mean storm motion vector