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FGUS75 KTFX 291025
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MTC013-015-035-041-045-049-051-059-073-099-101-300000-
HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE GREAT FALLS MT
425 AM MDT FRI MAY 29 2026
WHAT: WIDESPREAD HEAVY RAINFALL SATURDAY INTO MONDAY.
WHERE: MOSTLY THE WESTERN PORTION OF NORTH CENTRAL MT.
TIMING: THE HEAVIER RAINFALL WILL BEGIN ON SATURDAY AND THEN
DIMINISH ON MONDAY. RAINFALL RATES OF AROUND 0.50 TO 0.75 ARE
POSSIBLE EVERY 6 HOURS OVER A 36 HOUR PERIOD.
RELEVANT FACTORS: OVERALL, TOTAL PRECIPITATION AMOUNTS FOR MOST
AREAS WILL RANGE FROM 1 TO 2 INCHES. ABOUT 10 PERCENT OF THE AREA
WILL RECEIVE CLOSER TO 3 INCHES OF RAINFALL.
IN TERMS OF FLOODING, GIVEN THE RECENT DRY PERIOD, MOST OF THE AREA
WILL BE HANDLE THE FIRST FEW INCHES OF RAINFALL. HOWEVER, AREAS THAT
RECEIVE 3 OR MORE INCHES OF RAINFALL COULD START TO HAVE IMPACTS.
ADDITIONALLY, THERE IS STILL A MINOR SNOWPACK LEFT IN THE MOUNTAINS
THAT COULD ADD TO RUNOFF CONCERNS AS THE REMAINING SNOW WASHES OUT.
THUS SOME FLOOD STATEMENTS MIGHT BE NEEDED LATER THIS WEEKEND SHOULD
FLOODING DEVELOP OVER THE PLAINS OR ALONG RIVERS.
EVERYONE IS REMINDED THAT SHOULD FLOODING DEVELOP, REGARDLESS IF THE
ROADWAY IS PAVED OR NOT, DO NOT DRIVE THROUGH ANY FLOOD WATERS, AS
YOU DO NOT KNOW IF THE ROAD HAS BEEN WASHED OUT UNDER THE FLOOD
WATERS.
PLEASE MONITOR THE NATIONAL WEATHER SERVICE OR THE LOCAL MEDIA THIS
WEEKEND FOR FURTHER UPDATES ON THIS SPRING STORM.
BRUSDA
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