SPC Severe Thunderstorm Watch 250

WW 250 SEVERE TSTM MT 100040Z – 100600Z

WW 0250 Image

Severe Thunderstorm Watch Number 250
NWS Storm Prediction Center Norman OK
640 PM MDT Wed Jun 9 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  central Montana

* Effective this Wednesday night from 640 PM until Midnight MDT.

* Primary threats include...
  Isolated very large hail events to 2 inches in diameter possible
  Isolated damaging wind gusts to 70 mph possible
  A tornado or two possible

SUMMARY...Isolated storms including supercells will pose a risk for
mainly large to very large hail and downburst winds this evening. A
brief tornado or two also cannot be ruled out.

The severe thunderstorm watch area is approximately along and 75
statute miles east and west of a line from 50 miles northeast of
Havre MT to 20 miles southwest of Lewistown MT. For a complete
depiction of the watch see the associated watch outline update


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 500. Mean storm motion vector


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