Spot Forecast
Issued by NWS Great Falls, MT
Issued by NWS Great Falls, MT
180
FNUS75 KTFX 172200
FWSTFX
Spot Forecast for valentine...Wildland fire service
National Weather Service Great Falls MT
Issued by National Weather Service Missoula MT
400 PM MDT Fri Jul 17 2026
Forecast is based on forecast start time of 1600 MDT on July 17.
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...Southeast winds and low humidity continue through this
evening. A line of weakening thunderstorms are expected to reach the
fire from the west early tomorrow morning between 0400 and 0700.
.REST OF TODAY...
Sky/weather.........Mostly sunny (45-55 percent).
CWR.................0 percent.
Chance of thunder...2 percent.
Max temperature.....91-96.
Min humidity........15-20 percent.
Wind (20 ft)........
Slope/valley.......Southeast winds around 15 mph.
Ridgetop...........Southeast around 20 mph.
Mixing height.......7000 ft AGL.
Transport winds.....Southeast around 15 mph.
TIME (MDT) 4PM 5PM
Sky (%).........46 54
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0
Chc of thdr (%).0 0
Temp............91 92
RH..............17 19
20 FT wind dir..SE SE
20 FT wind spd..15 15
20 FT wind gust.25 25
Ridge wind dir..SE SE
Ridge wind spd..20 20
Mix hgt (kft)...6.5 7.0
Transp wind dir.SE SE
Transp wind spd.15 15
.TONIGHT...
Sky/weather.........Mostly cloudy (80-90 percent). Chance of
showers and thunderstorms in the evening, then
showers likely and slight chance of
thunderstorms overnight.
CWR.................5 percent.
Chance of thunder...29 percent.
Min temperature.....66-71.
Max humidity........64-69 percent.
Wind (20 ft)........
Slope/valley.......Southeast winds 10 to 15 mph shifting to the
southwest overnight, then variable overnight.
Gusty and erratic winds expected near thunderstorms
early in the evening. Gusty and erratic winds
expected near thunderstorms overnight.
Ridgetop...........Southeast 15 to 20 mph increasing to south 25
to 30 mph late in the evening, then decreasing
to around 20 mph after 3 am.
Mixing height.......500 ft AGL.
Transport winds.....Southeast 15 to 20 mph decreasing to around 10
mph late in the evening, then shifting to the
southwest overnight shifting to the north
overnight shifting to the south.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........71 74 70 73 90 80 76 95 96 91 86 83
Weather cov..... SCH CHC CHC CHC LKY LKY CHC CHC CHC CHC
Weather type.... RW RW RW RW RW RW RW RW RW RW
Tstm cov........ SCH CHC CHC CHC SCH SCH SCH
CWR.............10 10 10 10 10 10 10 10 10 10 10 10
Chc of thdr (%).10 10 20 30 30 30 20 20 20 10 10 10
Temp............90 89 86 83 80 78 76 75 74 72 71 70
RH..............20 25 30 35 40 45 50 55 61 63 64 67
20 FT wind dir..SE SE SE SE SE SE S SW NW NW SE E
20 FT wind spd..15 15 10 10 10 10 10 10 10 10 5 5
20 FT wind gust.20 20 20 15 15 15 15 15 15 10 10
Ridge wind dir..SE SE SE SE S S S S S S S S
Ridge wind spd..20 15 15 15 20 30 30 30 25 20 20 20
Mix hgt (kft)...7.0 5.5 2.0 0.5 0.5 0.5 0.5 1.0 0.5 0.5 0.5 1.0
Transp wind dir.SE SE SE E SE SE SW N N S S S
Transp wind spd.15 20 15 15 15 10 15 10 10 10 10 10
.SATURDAY...
Sky/weather.........Mostly cloudy (65-75 percent) then becoming
mostly sunny (20-30 percent). Slight chance of
showers early in the morning.
CWR.................5 percent.
Chance of thunder...6 percent.
Max temperature.....91-96.
Min humidity........24-29 percent.
Wind (20 ft)........
Slope/valley.......South winds around 5 mph shifting to the
northwest late in the afternoon.
Ridgetop...........South 15 to 20 mph shifting to the west 10 to
15 mph early in the morning, then shifting to
the northwest in the afternoon.
Mixing height.......6500 ft AGL.
Transport winds.....South around 10 mph shifting to the southeast
early in the morning, then shifting to the
south in the late morning and early afternoon
shifting to the west late in the afternoon.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........77 62 47 17 14 5 5 5 7 8 5 9
Weather cov.....SCH SCH SCH
Weather type....RW RW RW
Tstm cov........
CWR.............10 10 10 10 10 10 0 0 0 0 0 0
Chc of thdr (%).10 10 10 0 0 0 0 0 0 0 0 0
Temp............69 70 72 75 80 83 85 88 91 91 92 93
RH..............69 67 63 58 52 49 46 41 38 36 33 30
20 FT wind dir..SE SE S S S S S SW W W NW NW
20 FT wind spd..5 5 5 5 5 5 5 5 5 5 5 5
20 FT wind gust.10 10 10 10 10 10 10 10 15 15 15 15
Ridge wind dir..S S W W W NW NW NW NW NW NW NW
Ridge wind spd..20 15 15 10 10 10 10 10 15 15 10 10
Mix hgt (kft)...0.5 0.5 1.0 2.0 2.5 3.5 4.5 5.5 6.0 6.0 6.0 6.5
Transp wind dir.S E SE S S S S SW SW W W W
Transp wind spd.10 5 10 10 10 10 10 10 10 10 10 10
$$
Forecaster...Backup Office
Requested by...Wildland Fire Service
Type of request...WILDFIRE
.TAG 2617620.0/TFX
.DELDT 07/17/26
.FormatterVersion 2.0.0
.EMAIL mtlec@Firenet.gov