Severe Storm Outlook Narrative (AC)
Issued by NWS

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ACUS01 KWNS 281938
SWODY1
SPC AC 281936

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0236 PM CDT SAT MAR 28 2015

VALID 282000Z - 291200Z

...THERE IS A MRGL RISK OF SVR TSTMS OVER PARTS OF EASTERN MT INTO
THE WESTERN DAKOTAS...

...SUMMARY...
ISOLATED THUNDERSTORMS WILL BE POSSIBLE FROM PARTS OF MONTANA AND
WYOMING INTO THE NORTHERN GREAT PLAINS THIS AFTERNOON THROUGH
TONIGHT. A FEW OF THE STORMS COULD PRODUCE DAMAGING WIND GUSTS.

...20Z UPDATE TO THE DAY-1 CONVECTIVE OUTLOOK...
THE WRN BOUND OF THE MARGINAL AREA HAS BEEN SHIFTED WWD ACROSS
PORTIONS OF MT. FOR ADDITIONAL INFORMATION REGARDING THE RISK OF
ISOLATED DMGG WIND GUSTS ACROSS THE MARGINAL AREA...PLEASE REFER TO
RECENTLY ISSUED MESOSCALE DISCUSSION 155.

..COHEN.. 03/28/2015

.PREV DISCUSSION... /ISSUED 1122 AM CDT SAT MAR 28 2015/

...MT/WY/SD/ND...
WATER VAPOR LOOPS SHOW A PROGRESSIVE SHORTWAVE TROUGH MOVING INTO
WESTERN MT.  THIS AREA OF LARGE SCALE LIFT ASSOCIATED WITH THIS
FEATURE WILL MOVE EASTWARD INTO EASTERN MT BY MID AFTERNOON.
FORECAST SOUNDINGS IN THIS REGION SHOW STEEP LOW/MID LEVEL LAPSE
RATES...FAST TROPOSPHERIC WINDS...AND SUFFICIENT LOW/MID LEVEL
MOISTURE FOR THE DEVELOPMENT OF SCATTERED FAST-MOVING SHOWERS AND
THUNDERSTORMS.  A FEW OF THESE STORMS OVER EASTERN MT AND THE
WESTERN DAKOTAS WILL POSE A RISK OF LOCALLY GUSTY/DAMAGING WINDS.

ELSEWHERE...NO SEVERE STORMS ARE EXPECTED TODAY.



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