Alert Administrative Message
Issued by NWS Great Falls, MT

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NOUS75 KTFX 201640
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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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