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660
NOUS75 KTFX 221739
ADMTFX

ADMINISTRATIVE MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
1049 AM MDT TUE JUL 22 2014

TO ALL WFOS SURROUNDING WFO TFX
FM WFO TFX

WFO TFX HAS ISSUED A HEADS-UP EMAIL TO OUR EMERGENCY MANAGEMENT
COMMUNITY AND OTHER PARTNERS.

EMAIL TOPIC...POSSIBLE SEVERE THUNDERSTORMS ON WEDNESDAY AND
HIGH WINDS ON THURSDAY

...REASONING IN EMAIL...


SYNOPSIS -
A SOUTHERLY FLOW ALOFT WILL ALLOW FOR THUNDERSTORMS TO MOVE THROUGH
THE REGION ON WEDNESDAY. SOME STORMS COULD BE SEVERE WEDNESDAY
AFTERNOON AND EVENING. A PACIFIC FRONT WILL MOVE THROUGH THE REGION
ON THURSDAY BRINGING IN COOLER TEMPERATURES AND THE POTENTIAL FOR
STRONG WINDS...ALONG WITH RIDGE TOP RAIN/SNOW MIX IN GLACIER
NATIONAL PARK.

AREAS IMPACTED -
THUNDERSTORMS:
THERE IS THE POTENTIAL FOR STRONG STORMS MAINLY NORTH OF A LINE FROM
BUTTE TO WHITE SULPHUR SPRINGS.

HIGH WINDS:
THE NORTHERN ROCKY MOUNTAIN FRONT, CUT BANK, SWEET GRASS, SHELBY,
VALIER, AND CONRAD AREAS.

TIMING -
THUNDERSTORMS:
THE BEST TIME FRAME FOR STRONG THUNDERSTORMS WILL BE FROM 1 PM UNTIL
10 PM ON WEDNESDAY, WITH THE STORMS STARTING IN SOUTHWEST MT DURING
THE EARLY AFTERNOON HOURS AND MOVING NORTHWARD INTO NORTH CENTRAL MT
DURING THE LATE AFTERNOON AND EVENING HOURS.

HIGH WINDS:
THE STRONGEST WINDS ARE EXPECTED TO OCCUR OVER THE ROCKY MOUNTAIN
FRONT AND ACROSS THE PLAINS IN THE CUT BANK AND SHELBY AREA ON
THURSDAY. WIND GUSTS COULD EXCEED 70 MPH AT RIDGE TOPS AND 60 MPH
OVER THE PLAINS.

SNOW:
A MIX OF RAIN AND SNOW IS POSSIBLE AT RIDGE TOPS...MAINLY ABOVE
LOGAN PASS...IN GLACIER PARK ON THURSDAY. ANY SNOW ACCUMULATIONS ON
THE EAST SIDE OF THE PARK SHOULD BE LESS THAN ONE HALF INCH.

IMPACTS -
THUNDERSTORMS:
LIGHTNING...LARGE HAIL AND DAMAGING WINDS COULD IMPACT OUTDOOR
EVENTS ON WEDNESDAY.

HIGH WINDS:
TRAVEL COULD BECOME DIFFICULT FOR HIGH PROFILE VEHICLES. SOME
ISOLATED POWER OUTAGES ARE POSSIBLE.

FORECASTER CONFIDENCE -
THUNDERSTORMS: MODERATE
HIGH WINDS: MODERATE

UNCERTAINTIES -
THERE IS STILL A BIT OF UNCERTAINTY IN THE EXACT TIMING AND
LOCATIONS OF THE STRONGER STORMS ON WEDNESDAY...AND HOW STRONG THE
WINDS WILL BE ON THURSDAY.

IF YOU HAVE QUESTIONS OR CONCERNS...DO NOT HESITATE TO CALL OR
CHAT US.




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Page last modified: May 16, 2007
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