929
FNUS75 KTFX 150014
FWSTFX
SPOT FORECAST FOR SPRUCE...MTHDC
NATIONAL WEATHER SERVICE GREAT FALLS MT
614 PM MDT THU MAY 14 2026
FORECAST IS BASED ON FORECAST START TIME OF 1800 MDT ON MAY 14.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A WESTERLY FLOW CONTINUES ACROSS THE NORTHERN ROCKIES THROUGH
FRIDAY, MAINTAINING BREEZY AND DRY CONDITIONS. WEST WINDS WILL
GRADUALLY DECREASE THIS EVENING WITH GUSTY CONDITIONS CONTINUING
OVER EXPOSED RIDGETOPS WHILE LESS EXPOSED AREAS SEE WINDS DECREASE
TO LESS THAN 15 MPH BY MIDNIGHT. WEST WINDS INCREASE AGAIN ON
FRIDAY, PEAKING IN THE LATE MORNING OR EARLY AFTERNOON BEFORE
DECREASING AGAIN BY FRIDAY EVENING WITH LIGHTER WINDS DEVELOPING
FRIDAY NIGHT. CLOUDS INCREASE FRIDAY NIGHT AHEAD OF WEATHER SYSTEM
MOVING INTO THE REGION THIS WEEKEND. TEMPERATURES REMAIN SOMEWHAT
BELOW SEASONAL AVERAGES THROUGH FRIDAY WITH ADDITIONAL COOLING
AND CHANCES FOR PRECIPITATION (INCLUDING HIGHER ELEVATION SNOW)
DEVELOPING THIS WEEKEND.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT).
CWR.................5 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MIN TEMPERATURE.....33-38.
MAX HUMIDITY........52-57 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25
MPH THROUGH 2100, DECREASING TO WEST AROUND 10 MPH
WITH GUSTS TO AROUND 15 MPH OVERNIGHT.
RIDGETOP...........WEST 15 TO 20 MPH. GUSTS TO AROUND 35 MPH IN THE
EVENING.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 25 TO 30 MPH DECREASING TO 20 TO 25 MPH IN
THE LATE EVENING AND OVERNIGHT.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........33 36 29 34 24 17 11 17 13 16 17 17
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 10 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............53 52 49 45 43 41 41 41 40 39 38 37
RH..............24 27 32 37 41 45 48 47 50 52 53 55
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..15 20 15 15 15 15 15 15 15 15 15 15
20 FT WIND GUST.35 35 35 35 35 35 35 35 30 30 30 30
RIDGE WIND DIR..W W W W W W W W W W W W
RIDGE WIND SPD..35 35 35 35 35 35 35 35 35 35 35 35
MIX HGT (KFT)...6.0 5.5 4.0 1.5 0.5 0.5 0.5 0.5 0.5 1.0 0.5 0.5
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.30 30 25 20 20 20 20 20 20 25 25 20
FRIDAY
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....51-56.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS AROUND 10 MPH INCREASING TO 15 TO 20
MPH IN THE AFTERNOON. GUSTS UP TO 25 MPH.
RIDGETOP...........WEST 20 TO 25 MPH WITH A FEW AFTERNOON GUSTS TO
30 MPH.
MIXING HEIGHT.......7000 FT AGL.
TRANSPORT WINDS.....WEST 20 TO 25 MPH INCREASING TO 30 TO 35 MPH
EARLY IN THE MORNING.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........22 28 14 9 22 23 13 12 25 24 20 25
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............37 36 40 42 46 47 48 50 51 52 53 53
RH..............57 53 47 42 37 33 30 27 25 24 22 22
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..10 15 15 20 20 20 20 20 20 15 15 15
20 FT WIND GUST.30 30 30 35 35 35 30 30 30 30 30 30
RIDGE WIND DIR..W W W W W W W W W W W W
RIDGE WIND SPD..40 40 40 40 40 40 40 40 45 40 40 35
MIX HGT (KFT)...0.5 2.0 3.0 3.5 4.0 5.0 5.5 6.0 6.5 6.5 7.0 7.0
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.20 25 30 30 30 30 30 35 30 30 30 30
FRIDAY NIGHT
SKY/WEATHER.........INCREASING CLOUDS (40-50 PERCENT BECOMING
75-85 PERCENT).
CWR.................5 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....31-36.
MAX HUMIDITY........57-62 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND
20 MPH IN THE EVENING DECREASING TO AROUND 10 MPH
OVERNIGHT.
RIDGETOP...........WEST AROUND 20 MPH DECREASING TO 10 TO 15 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 25 TO 30 MPH DECREASING TO 10 TO 15 MPH
LATE IN THE EVENING.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........47 47 47 69 69 69 82 82 82 88 88 88
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............10 10 10 10 10 10 10 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............52 51 48 45 42 39 38 37 37 37 36 36
RH..............23 25 32 37 43 48 55 53 55 57 57 60
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..15 15 15 5 5 5 0 0 0 0 0 0
20 FT WIND GUST.30 30 30 20 20 20 5 5 5 5 5 5
RIDGE WIND DIR..W W W W W W W W W W W W
RIDGE WIND SPD..35 30 30 30 25 20 20 15 10 10 10 10
MIX HGT (KFT)...6.0 6.0 4.0 1.0 1.0 1.0 1.0 0.5 0.5 1.0 0.5 0.5
TRANSP WIND DIR.W W W W W W W SW W W W W
TRANSP WIND SPD.30 30 25 15 15 10 10 5 5 5 5 10
SATURDAY
SKY/WEATHER.........CLOUDY (85-95 PERCENT). RAIN AND SNOW SHOWERS
BECOMING LIKELY IN THE AFTERNOON.
CWR.................5 PERCENT.
CHANCE OF THUNDER...14 PERCENT.
MAX TEMPERATURE.....43-48.
MIN HUMIDITY........45-50 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING NORTHWEST 5 TO 10 MPH IN
THE LATE MORNING AND AFTERNOON.
RIDGETOP...........WEST 5 TO 10 MPH SHIFTING TO THE NORTHWEST
AROUND 15 MPH LATE IN THE MORNING.
MIXING HEIGHT.......7000 FT AGL.
TRANSPORT WINDS.....WEST AROUND 5 MPH INCREASING TO AROUND 20 MPH.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........100 100 100 90 90 90 85 85 85 76 76 76
WEATHER COV.....SCH SCH SCH SCH SCH SCH LKY LKY LKY LKY LKY LKY
WEATHER TYPE....SN SN SN SN SN SN SN SN SN RS RS RS
TSTM COV........
CWR.............10 10 10 10 10 10 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 10 10 10 10 10 10
TEMP............36 34 36 39 41 41 42 43 43 43 43 42
RH..............61 62 61 58 56 55 54 54 54 54 52 49
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW NW NW
20 FT WIND SPD..0 0 0 5 5 5 10 10 10 10 10 10
20 FT WIND GUST.5 5 5 10 10 10 15 15 15 20 20 20
RIDGE WIND DIR..W W W W W W W W W W NW NW
RIDGE WIND SPD..10 10 10 5 10 15 15 15 15 15 15 15
MIX HGT (KFT)...1.0 1.5 2.5 3.0 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.0
TRANSP WIND DIR.W NW W SW SW W W W W W W W
TRANSP WIND SPD.5 10 10 10 10 15 15 20 20 20 20 20
FORECASTER...HOENISCH
REQUESTED BY...ZACK
TYPE OF REQUEST...WILDFIRE
.TAG 2613681.0/TFX
.DELDT 05/14/26
.FORMATTERVERSION 2.0.0
.EMAIL BRENNAN.WILLIAMS@USDA.GOV,MTHDC@FIRENET.GOV,PER.FRISK@USDA.GOV
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