675
FNUS75 KTFX 261338
FWSTFX
SPOT FORECAST FOR BONANZA RIDGE RX...USFS
NATIONAL WEATHER SERVICE GREAT FALLS MT
738 AM MDT SAT SEP 26 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 MDT ON SEPTEMBER 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
BRISK WESTERLY WINDS ALOFT WILL LINGER THROUGH THE DAY TODAY,
RESULTING IN A BREEZY DAY AT THE PRESCRIBED BURN AREA. ATTENTION
THEN TURNS TO SUNDAY, WHERE A FEW LIGHT SHOWERS WILL BE POSSIBLE
THROUGH THE DAY. THE PROBABILITY FOR A WETTING RAIN IS LESS THAN
5%, HOWEVER.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....51-56.
MIN HUMIDITY........23-28 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 10 TO 15 MPH, INCREASING TO 15 TO 20
MPH BY LATE MORNING. GUSTS UP TO 25 MPH IN
THE AFTERNOON.
MIXING HEIGHT.......6000 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 15 MPH INCREASING TO 15 TO 20 MPH
LATE IN THE AFTERNOON.
TIME (MDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........53 55 57 55 52 60 63 72 60 57
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0
TEMP............37 39 42 44 46 49 51 52 52 53
RH..............62 57 48 42 36 33 30 28 28 28
20 FT WIND DIR..W W W W SW SW W W W W
20 FT WIND SPD..15 10 10 10 10 10 10 10 10 10
20 FT WIND GUST.20 15 15 15 20 20 25 25 25 25
MIX HGT (KFT)...0.5 1.5 2.5 3.5 4.5 5.0 5.5 6.0 6.0 5.5
TRANSP WIND DIR.W W W W W W W W W W
TRANSP WIND SPD.15 10 10 15 15 15 20 20 20 15
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT), BECOMING
MOSTLY CLOUDY (80-90 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....35-40.
MAX HUMIDITY........39-44 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 10 TO 15 MPH BECOMING LIGHT
AND VARIABLE AFTER SUNSET.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST AROUND 15 MPH SHIFTING TO THE NORTH IN THE
EVENING AND OVERNIGHT, THEN SHIFTING TO THE
NORTHEAST 5 TO 10 MPH OVERNIGHT.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........50 38 55 41 33 76 77 88 85 84 87 94
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............51 48 47 43 42 41 40 41 39 39 39 39
RH..............29 36 39 42 43 43 44 43 43 43 44 44
20 FT WIND DIR..W NW NW W NW NW NW NW N NE N N
20 FT WIND SPD..10 10 10 15 10 10 10 10 10 5 5 5
20 FT WIND GUST.20 15 20 20 15 15 15 10 10 10
MIX HGT (KFT)...4.0 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.W NW N N N N N N NE N N NE
TRANSP WIND SPD.15 10 10 15 10 10 10 10 10 5 5 5
SUNDAY
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). ISOLATED
LIGHT SHOWERS.
CWR.................1 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....51-56.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHEAST WINDS AROUND 5 MPH SHIFTING TO THE
SOUTHEAST IN THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHEAST LATE IN THE MORNING, THEN SHIFTING TO
THE SOUTHWEST IN THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........90 90 90 79 79 79 91 91 91 95 95 95
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............39 38 39 40 43 44 46 49 51 51 52 53
RH..............44 44 44 40 40 39 37 37 35 35 35 35
20 FT WIND DIR..NE NE NE SE SE SE SE SE SE SE SE SE
20 FT WIND SPD..5 5 5 5 5 5 5 5 5 5 5 5
20 FT WIND GUST. 10 10 10 15 15 15 15 15 15
MIX HGT (KFT)...0.5 0.5 0.5 1.0 1.5 1.5 2.0 2.5 3.0 3.0 3.0 3.0
TRANSP WIND DIR.NE NE E SE S S SW SW W SW W W
TRANSP WIND SPD.5 5 5 5 5 10 10 10 10 10 10 10
FORECASTER...MCDOWELL
REQUESTED BY...BAJIN SMITH
TYPE OF REQUEST...PRESCRIBED
.TAG 2622432.1/TFX
.DELDT 09/26/26
.FORMATTERVERSION 2.0.0
.EMAIL BAJIN.SMITH@USDA.GOV, TFX.OPS@NOAA.GOV
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