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985
NOUS75 KTFX 201640
ADMTFX

ADMINISTRATIVE MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
836 AM MDT WED AUG 20 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...WIDESPREAD PRECIPITATION THIS EVENING THROUGH SUNDAY
MORNING

...REASONING IN EMAIL...

SYNOPSIS
A POTENT LOW PRESSURE SYSTEM WILL BRING A PROLONGED PERIOD
OF WIDESPREAD RAINFALL ACROSS NORTH-CENTRAL AND SOUTHWEST
MONTANA.

TIMING
THIS EVENING THROUGH SUNDAY MORNING. THE PERIODS OF HEAVIEST RAINFALL
WILL BE TONIGHT/THURSDAY AND AGAIN FRIDAY/SATURDAY.

RAINFALL TOTALS
MOST LIKELY SCENARIO: 1 TO 2 INCHES. UP TO 3 INCHES ALONG THE ROCKY
MOUNTAIN FRONT, LITTLE BELTS, HIGHWOODS AND SNOWIES.

TEMPERATURES
10 TO 20 DEGREES BELOW SEASONAL AVERAGES
HIGHS: 50S AND 60S PLAINS/VALLEYS, 40S TO NEAR 50 MOUNTAINS
LOWS: 40S PLAINS/VALLEYS, 30S MOUNTAINS

SNOW LEVELS
AS LOW AS 6500 FEET IN GLACIER NATIONAL PARK, TRACE TO 0.50 INCHES OF
SNOW POSSIBLE AT LOGAN PASS WITH 1 TO 2 INCHES OF SNOW ACCUMULATION
ABOVE LOGAN PASS.

IMPACTS
- COLD RAIN CAN LEAD TO HYPOTHERMIA DURING OUTDOOR ACTIVITIES/EVENTS
- RISING WATER LEVELS WITH MINOR FLOODING POSSIBLE ON SMALL STREAMS
AND CREEKS
- AGRICULTURE
- HEAVY RAINFALL IN A SHORT DURATION CAN CAUSE MUDSLIDES/DEBRIS FLOWS,
ESPECIALLY IN RECENT BURN AREAS AND STEEP TERRAIN

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




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