119  
WWUS85 KTFX 222131  
RFWTFX  
 
URGENT - FIRE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
331 PM MDT SAT JUL 22 2017  
 
MTZ116-118-231200-  
/O.EXA.KTFX.FW.W.0007.170723T1800Z-170724T0300Z/  
LINCOLN RANGER DISTRICT OF THE HELENA NATIONAL FOREST-  
HELENA AND TOWNSEND RANGER DISTRICTS OF THE HELENA NATIONAL FOREST-  
331 PM MDT SAT JUL 22 2017  
 
...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM MDT SUNDAY FOR LOW  
RH, HOT TEMPERATURES, GUSTY WINDS AND ISOLATED DRY THUNDERSTORMS...  
...  
 
THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A RED FLAG  
WARNING, WHICH IS IN EFFECT FROM NOON TO 9 PM MDT SUNDAY.  
 
* IMPACTS: LOW HUMIDITIES...HOT TEMPERATURES...GUSTY WINDS...AND A  
RISK FOR ISOLATED DRY THUNDERSTORMS WITH GUSTY AND ERRATIC  
OUTFLOW WINDS WILL CREATE ERRATIC FIRE BEHAVIOR AND AN INCREASED  
RISK FOR NEW FIRE STARTS.  
 
* AFFECTED AREA:  
IN SOUTHWEST MONTANA, FIRE WEATHER ZONES 116 AND 118.  
 
* COUNTIES AFFECTED:  
IN CENTRAL MONTANA, CASCADE, LEWIS AND CLARK, MEAGHER  
POWELL.  
IN SOUTHWEST MONTANA, BROADWATER, GALLATIN, JEFFERSON.  
 
* WIND: SOUTHWEST 10 TO 15 MPH WITH GUSTS UP TO 25 MPH.  
 
* HUMIDITY: AS LOW AS 10 TO 15 PERCENT.  
 
* TEMPERATURES: IN THE UPPER 80 TO MID 90S.  
 
* THUNDERSTORMS: ISOLATED DRY THUNDERSTORMS ARE POSSIBLE LATE  
SUNDAY AFTERNOON THROUGH SUNDAY EVENING, MAINLY ACROSS FIRE  
WEATHER ZONE 118.  
 
* WIND SHIFT: A SHIFT FROM SOUTHERLY WINDS TO NORTHERLY WINDS WILL  
OCCUR EARLY MONDAY MORNING. THIS WIND SHIFT WILL BE ACCOMPANIED  
BY GUSTY WINDS, BUT HIGHER RELATIVE HUMIDITY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE  
EITHER OCCURRING NOW, OR WILL SHORTLY. A COMBINATION OF STRONG  
WINDS, LOW RELATIVE HUMIDITY, AND WARM TEMPERATURES CAN CONTRIBUTE  
TO EXTREME FIRE BEHAVIOR.  
 
PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THESE  
AREAS OF THIS RED FLAG WARNING.  
 

 
 

 
 
MTZ112>115-117-231200-  
/O.CON.KTFX.FW.W.0007.170723T1800Z-170724T0300Z/  
EASTERN GLACIER/TOOLE/CENTRAL/EASTERN PONDERA/LIBERTY-  
HILL AND BLAINE COUNTIES-  
LEWIS AND CLARK NATIONAL FOREST ROCKY MOUNTAIN DISTRICT-  
ROCKY MOUNTAIN FRONT-CHOUTEAU AND FERGUS COUNTIES-  
CENTRAL AND EASTERN LEWIS AND CLARK NATIONAL FOREST AREAS-  
331 PM MDT SAT JUL 22 2017  
 
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT  
SUNDAY...  
 
* IMPACTS: LOW HUMIDITIES...HOT TEMPERATURES...GUSTY WINDS...AND A  
RISK FOR ISOLATED DRY THUNDERSTORMS WITH GUSTY AND ERRATIC  
OUTFLOW WINDS WILL CREATE ERRATIC FIRE BEHAVIOR AND AN INCREASED  
RISK FOR NEW FIRE STARTS.  
 
* AFFECTED AREA:  
IN NORTH CENTRAL MONTANA, FIRE WEATHER ZONES 112, 113, 114, 115  
AND 117.  
 
* COUNTIES AFFECTED:  
IN CENTRAL MONTANA, CASCADE, FERGUS, JUDITH BASIN  
LEWIS AND CLARK, MEAGHER.  
IN NORTH CENTRAL MONTANA, BLAINE, CHOUTEAU, GLACIER, HILL  
LIBERTY, PONDERA, TETON, TOOLE.  
IN SOUTH CENTRAL MONTANA, GOLDEN VALLEY, PARK, PHILLIPS  
SWEET GRASS, WHEATLAND.  
 
* WIND: SOUTHWEST 10 TO 15 MPH WITH GUSTS UP TO 25 MPH.  
 
* HUMIDITY: AS LOW AS 10 TO 15 PERCENT.  
 
* TEMPERATURES: IN THE UPPER 80 TO MID 90S.  
 
* THUNDERSTORMS: ISOLATED DRY THUNDERSTORMS ARE POSSIBLE LATE  
SUNDAY AFTERNOON THROUGH SUNDAY EVENING, MAINLY ACROSS FIRE  
WEATHER ZONES 113 AND 115.  
 
* WIND SHIFT: A SHIFT FROM SOUTHERLY WINDS TO NORTHERLY WINDS WILL  
OCCUR SUNDAY EVENING THROUGH EARLY MONDAY MORNING. THIS WIND  
SHIFT WILL BE ACCOMPANIED BY GUSTY WINDS, BUT HIGHER RELATIVE  
HUMIDITY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE  
EITHER OCCURRING NOW, OR WILL SHORTLY. A COMBINATION OF STRONG  
WINDS, LOW RELATIVE HUMIDITY, AND WARM TEMPERATURES CAN CONTRIBUTE  
TO EXTREME FIRE BEHAVIOR.  
 
PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THESE  
AREAS OF THIS RED FLAG WARNING.  
 

 
 

 
 
HTTP://WEATHER.GOV/GREATFALLS  
 
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