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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 356
NWS Storm Prediction Center Norman OK
220 PM MDT Fri Jun 14 2019
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
* Effective this Friday afternoon and evening from 220 PM until
800 PM MDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...An isolated supercell thunderstorm appears likely to
maintain strength several more hours, and may impact the Great Falls
area between 3 PM and 5 PM MDT, with a continuing risk for severe
hail and strong surface gusts.
The severe thunderstorm watch area is approximately along and 55
statute miles east and west of a line from 35 miles north of Great
Falls MT to 20 miles south southwest of Lewistown MT. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU6).
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
OTHER WATCH INFORMATION...CONTINUE...WW 355...
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