716
FNUS75 KTFX 152140
FWSTFX
SPOT FORECAST FOR MT HELENA...L&C COUNTY
NATIONAL WEATHER SERVICE GREAT FALLS MT
340 PM MDT MON JUN 15 2026
FORECAST IS BASED ON FORECAST START TIME OF 1600 MDT ON JUNE 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
AN UPPER LEVEL RIDGE IN PLACE OFF TO THE WEST WILL BE BROKEN DOWN
THROUGH THE EVENING AND OVERNIGHT. SURFACE WINDS GRADUALLY INCREASE
THROUGH THE OVERNIGHT AS A RESULT OF THIS RIDGE BREAKDOWN, WITH
THE STRONGEST WINDS AND GUSTS DEVELOPING BY MID-MORNING TUESDAY,
PERSISTING THROUGH THE ENTIRE DAY. THE RIDGE BREAKDOWN IS ON THE
DRY SIDE ALL THINGS CONSIDERED, WHICH WILL KEEP PRECIPITATION
CHANCES VERY LOW, AND PROMOTE LACKLUSTER HUMIDITY RECOVERY
OVERNIGHT TONIGHT.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...2 PERCENT.
MAX TEMPERATURE.....79-84.
MIN HUMIDITY........19-24 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS AROUND 10 MPH.
RIDGETOP...........WEST AROUND 15 MPH.
MIXING HEIGHT.......8500 FT AGL.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
TIME (MDT) 4PM 5PM
SKY (%).........50 48
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0
CHC OF THDR (%).0 0
TEMP............80 81
RH..............24 24
20 FT WIND DIR..W W
20 FT WIND SPD..10 10
20 FT WIND GUST.15 20
RIDGE WIND DIR..W W
RIDGE WIND SPD..15 15
MIX HGT (KFT)...8.5 8.0
TRANSP WIND DIR.W W
TRANSP WIND SPD.15 15
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....56-61.
MAX HUMIDITY........50-55 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS AROUND 10 MPH SHIFTING TO THE
SOUTHWEST AFTER 3 AM.
RIDGETOP...........WEST 15 TO 20 MPH INCREASING TO AROUND 30 MPH
TOWARD DAYBREAK TUESDAY.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 25 MPH.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........45 54 62 70 72 75 77 67 57 46 41 36
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............81 80 79 74 71 69 68 67 66 63 62 61
RH..............24 24 24 31 36 38 40 41 44 47 50 51
20 FT WIND DIR..W W W W W W W W W W SW SW
20 FT WIND SPD..10 10 10 10 10 10 10 10 10 10 10 10
20 FT WIND GUST.20 15 15 15 15 15 15 15 15 15 15 15
RIDGE WIND DIR..W W W W W W NW W W W W W
RIDGE WIND SPD..15 15 20 20 20 20 20 20 20 25 25 30
MIX HGT (KFT)...8.0 6.5 3.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.20 20 15 15 15 20 20 20 20 25 25 30
TUESDAY
SKY/WEATHER.........SUNNY (20-30 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....84-89.
MIN HUMIDITY........12-17 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WINDY. WEST WINDS 10 TO 20 MPH INCREASING TO
25-30 MPH WITH GUSTS TO AROUND 45 MPH AROUND
0900 HRS.
RIDGETOP...........WEST 25 TO 35 MPH INCREASING TO 45 TO 50 MPH
IN THE AFTERNOON.
MIXING HEIGHT.......9000 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 15 MPH INCREASING TO 45 TO 50 MPH.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........31 29 27 25 25 25 24 22 21 19 18 17
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............59 62 65 69 74 76 80 83 84 84 85 84
RH..............55 50 42 38 28 26 23 19 18 17 18 19
20 FT WIND DIR..SW SW W W W W W W W W W W
20 FT WIND SPD..10 10 15 15 20 25 25 30 30 30 30 30
20 FT WIND GUST.15 15 20 25 35 40 40 40 40 40 45 45
RIDGE WIND DIR..W W W W W W W W W W W W
RIDGE WIND SPD..30 30 30 35 40 40 40 40 45 45 45 50
MIX HGT (KFT)...0.5 1.0 2.0 4.0 5.0 6.0 7.0 7.5 8.5 9.0 9.0 9.0
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.30 30 30 35 40 40 40 40 45 45 45 50
FORECASTER...MCDOWELL
REQUESTED BY...KYLE STURGILL-SIMON
TYPE OF REQUEST...WILDFIRE
.TAG 2615573.0/TFX
.DELDT 06/15/26
.FORMATTERVERSION 2.0.0
.EMAIL KSS@LCCOUNTYMT.GOV,MTHDC@FIRENET.GOV, TFX.OPS@NOAA.GOV
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