852
FNUS75 KTFX 302144
FWSTFX
SPOT FORECAST FOR SWATHER...BLAINE COUNTY SHERRIF OFFICE
NATIONAL WEATHER SERVICE GREAT FALLS MT
344 PM MDT THU JUL 30 2026
FORECAST IS BASED ON FORECAST START TIME OF 1600 MDT ON JULY 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH
SUNDAY EVENING...
DISCUSSION
THIS EVENING SHOWERS AND THUNDERSTORMS WILL BE AROUND THE FIRE
WITH THE BEST CHANCE FOR A THUNDERSTORM TO AFFECT THE FIRE
BETWEEN 1900 AND 2300. ANY THUNDERSTORMS WILL PRODUCE GUSTY,
ERRATIC WINDS AND FREQUENT LIGHTNING. TONIGHT THERE WILL BE POOR
HUMIDITY RECOVERY. TONIGHT WINDS WILL BE AROUND 5 MPH. ON FRIDAY
IT WILL BE HOT AND DRY WITH WINDS AROUND 5 TO 10 MPH WITH GUSTS
UP TO 15 MPH. ON FRIDAY RELATIVE HUMIDITY WILL BE AS LOW AS 15%.
SATURDAY AFTERNOON THROUGH SUNDAY IT WILL BE HOT DRY AND WINDY
WITH NEAR CRITICAL RELATIVE HUMIDITY VALUES AND WIND GUSTS OF 30
TO 40 MPH.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
CWR.................5 PERCENT.
CHANCE OF THUNDER...20 PERCENT.
MAX TEMPERATURE.....91-96.
MIN HUMIDITY........13-18 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHWEST WINDS AROUND 5 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGETOP...........SOUTHWEST AROUND 5 MPH.
MIXING HEIGHT.......9000 FT AGL.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
TIME (MDT) 4PM 5PM
SKY (%).........40 40
WEATHER COV.....SCH SCH
WEATHER TYPE....RW RW
TSTM COV........SCH SCH
CWR.............10 10
CHC OF THDR (%).20 20
TEMP............92 91
RH..............27 26
20 FT WIND DIR..NW NW
20 FT WIND SPD..5 5
20 FT WIND GUST.10 15
RIDGE WIND DIR..SW W
RIDGE WIND SPD..5 5
MIX HGT (KFT)...9.0 9.0
TRANSP WIND DIR.W W
TRANSP WIND SPD.10 10
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
CWR.................5 PERCENT.
CHANCE OF THUNDER...10 PERCENT.
MIN TEMPERATURE.....60-65.
MAX HUMIDITY........49-54 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH WINDS AROUND 5 MPH SHIFTING TO THE SOUTH
IN THE EVENING AND OVERNIGHT, THEN SHIFTING TO
THE SOUTHWEST OVERNIGHT.
RIDGETOP...........WEST 5 TO 10 MPH SHIFTING TO THE SOUTHWEST
AROUND 15 MPH AFTER 3 AM.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH SHIFTING TO THE WEST EARLY
IN THE EVENING, THEN SHIFTING TO THE SOUTHEAST
EARLY IN THE EVENING SHIFTING TO THE SOUTH 10
TO 15 MPH OVERNIGHT.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........16 13 16 5 7 13 8 22 31 36 22 23
WEATHER COV.....PTY PTY PTY PTY PTY PTY PTY PTY PTY PTY PTY PTY
WEATHER TYPE....SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK
TSTM COV........
CWR.............10 10 10 10 10 10 0 0 0 0 0 0
CHC OF THDR (%).10 10 10 10 10 10 0 0 0 0 0 0
TEMP............91 89 84 78 74 72 71 69 68 67 65 65
RH..............26 29 34 42 48 52 54 57 57 57 59 58
20 FT WIND DIR..N SE SE S S S S S S S SW SW
20 FT WIND SPD..5 5 5 10 10 10 10 10 10 5 5 5
20 FT WIND GUST.15 10 10 15 15 15 20 15 15 10 10
RIDGE WIND DIR..W W W NW W W SW SW SW SW SW SW
RIDGE WIND SPD..10 10 10 5 5 5 5 10 10 15 15 15
MIX HGT (KFT)...7.0 5.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.S W SE S S S S S S S SW SW
TRANSP WIND SPD.10 5 5 10 10 10 15 10 10 10 10 10
FRIDAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....91-96.
MIN HUMIDITY........12-17 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS AROUND 5 MPH SHIFTING TO THE
WEST IN THE LATE MORNING AND AFTERNOON.
RIDGETOP...........WEST 15 TO 20 MPH.
MIXING HEIGHT.......8000 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 15 MPH INCREASING TO 15 TO 20 MPH
LATE IN THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........11 19 10 2 2 3 3 4 6 4 5 7
WEATHER COV.....PTY PTY PTY ARS ARS ARS PTY PTY PTY ARS ARS ARS
WEATHER TYPE....SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK
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............63 67 70 74 81 84 86 88 91 92 93 93
RH..............58 55 48 41 35 28 24 22 20 17 16 15
20 FT WIND DIR..SW SW W W W W W W W W W W
20 FT WIND SPD..5 5 5 5 10 10 10 10 10 10 10 10
20 FT WIND GUST. 10 10 10 15 15 15 15 20 20 20 15
RIDGE WIND DIR..SW SW SW SW SW W W W W W W W
RIDGE WIND SPD..15 15 20 20 20 20 20 20 20 20 20 20
MIX HGT (KFT)...0.5 0.5 1.0 1.5 2.5 3.5 5.0 6.0 7.5 8.0 8.0 8.0
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.10 10 10 10 15 15 15 15 15 20 15 15
FORECASTER...GESELL
REQUESTED BY...BRIANNA MOLITOR
TYPE OF REQUEST...WILDFIRE
.TAG 2618696.0/TFX
.DELDT 07/30/26
.FORMATTERVERSION 2.0.0
.EMAIL BMOLITOR@BLAINECOUNTY-MT.GOV, TFX.OPS@NOAA.GOV
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