975
FNUS75 KTFX 130156
FWSTFX
SPOT FORECAST FOR POORMAN RX...USFS
NATIONAL WEATHER SERVICE GREAT FALLS MT
756 PM MDT TUE MAY 12 2026
FORECAST IS BASED ON IGNITION TIME OF 2000 MDT ON MAY 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
...HIGH WIND WATCH IN EFFECT FROM WEDNESDAY EVENING THROUGH
THURSDAY EVENING...
DISCUSSION
WARM, DRY, AND WINDY CONDITIONS EXPECTED FOR WEDNESDAY. WINDS WILL
BE LIGHT THROUGH THE MORNING HOURS BUT START TO PICK UP OUT OF THE
WEST/SOUTHWEST AFTER 2PM. THROUGH THE AFTERNOON AND EVENING HOURS
THERE IS A CHANCE FOR THUNDERSTORMS WITH THE MAIN CONCERNS BEING
FREQUENT LIGHTNING AND GUSTY, ERRATIC WINDS. BY THE EVENING, A
STRONG UPPER-LEVEL JET IS EXPECTED TO MOVE ACROSS THE REGION BRINGING
SUSTAINED WINDS OF 25 TO 35 MPH AND GUSTS UP TO 65 MPH. STRONG WINDS
ARE EXPECTED TO PERSIST THROUGH THURSDAY EVENING WITH CALMER
CONDITIONS NOT EXPECTED TO RETURN UNTIL FRIDAY AFTERNOON.
LATE WEDNESDAY NIGHT INTO THURSDAY MORNING THERE IS A SLIGHT CHANCE
FOR SNOW SHOWERS ALONG THE CONTINENTAL DIVIDE. SNOWFALL ACCUMULATIONS
ARE GENERALLY EXPECTED TO BE LESS THAN 2 INCHES AT BEST.
REST OF TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS EARLY IN THE EVENING.
CWR.................5 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....46-51.
MAX HUMIDITY........41-46 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING SOUTHEAST AROUND 5 MPH
OVERNIGHT, THEN SHIFTING TO THE SOUTHWEST AFTER
3 AM SHIFTING TO THE SOUTHEAST EARLY IN THE
MORNING.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH SHIFTING TO THE
SOUTHEAST IN THE LATE EVENING AND OVERNIGHT.
TIME (MDT) 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........46 37 41 45 42 34 21 44 64 84
WEATHER COV.....SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW
TSTM COV........
CWR.............10 10 10 10 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0
TEMP............69 61 57 55 54 53 52 50 50 50
RH..............22 29 33 36 38 38 39 42 41 42
20 FT WIND DIR..NE E SE SE SE SE SE S SW SE
20 FT WIND SPD..0 0 0 0 5 5 5 5 5 5
20 FT WIND GUST.10 10 10 10 10 10 10 10 10 10
MIX HGT (KFT)...0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.NE E SE SE E SE SE SE S S
TRANSP WIND SPD.5 5 10 10 10 10 10 10 10 10
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT) THEN BECOMING
PARTLY SUNNY (65-75 PERCENT). RAIN SHOWERS
LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
CWR.................0 PERCENT INCREASING TO 15 PERCENT IN THE
AFTERNOON.
CHANCE OF THUNDER...23 PERCENT.
MAX TEMPERATURE.....72-77.
MIN HUMIDITY........18-23 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS AROUND 5 MPH SHIFTING TO THE
SOUTHWEST WITH GUSTS TO AROUND 25 MPH LATE IN
THE MORNING, THEN SHIFTING TO THE WEST 10 TO 15
MPH WITH GUSTS TO AROUND 45 MPH IN THE
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.
MIXING HEIGHT.......7000 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH SHIFTING TO THE SOUTHWEST
IN THE LATE MORNING AND EARLY AFTERNOON, THEN
INCREASING TO WEST 20 TO 25 MPH LATE IN THE
AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........45 42 39 42 37 37 48 59 59 72 63 75
WEATHER COV..... SCH CHC CHC LKY CHC LKY
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH
CWR.............0 0 0 0 0 0 20 20 20 20 20 20
CHC OF THDR (%).0 0 0 0 0 0 0 10 10 20 20 20
TEMP............48 50 53 57 64 69 71 71 72 68 65 62
RH..............45 44 42 38 30 26 23 25 30 34 39 45
20 FT WIND DIR..S SE S S SW SW W W W W W W
20 FT WIND SPD..5 5 5 5 5 5 5 10 10 15 15 15
20 FT WIND GUST.10 10 10 10 10 15 20 20 20 25 30 35
MIX HGT (KFT)...0.5 0.5 0.5 1.0 2.0 5.0 7.0 6.5 6.0 4.0 3.5 3.0
TRANSP WIND DIR.SE S S S SW SW SW SW SW SW W W
TRANSP WIND SPD.10 10 10 10 10 15 15 15 15 20 20 25
WEDNESDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF RAIN
SHOWERS EARLY IN THE EVENING, THEN SLIGHT
CHANCE OF RAIN SHOWERS AND SNOW SHOWERS IN THE
LATE EVENING AND OVERNIGHT. CHANCE OF RAIN
SHOWERS AND SNOW SHOWERS EARLY IN THE MORNING.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS LATE IN THE AFTERNOON.
CWR.................15 PERCENT DECREASING TO 5 PERCENT OVERNIGHT.
CHANCE OF THUNDER...22 PERCENT.
MIN TEMPERATURE.....33-38.
MAX HUMIDITY........69-74 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 15 TO 30 MPH WITH GUSTS TO AROUND 65
MPH.
MIXING HEIGHT.......1500 FT AGL.
TRANSPORT WINDS.....WEST 30 TO 45 MPH.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........76 76 76 63 63 63 80 80 80 79 79 79
WEATHER COV.....CHC CHC CHC SCH SCH SCH SCH SCH CHC
WEATHER TYPE....RW RW RW RS RS RS RS RS RS
TSTM COV........SCH SCH
CWR.............20 20 20 20 20 20 10 10 10 10 10 10
CHC OF THDR (%).20 20 20 10 10 10 10 10 10 0 0 0
TEMP............60 47 40 39 38 37 36 36 36 35 35 35
RH..............51 50 56 61 64 68 70 69 71 73 73 73
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..15 15 15 20 20 20 20 25 25 25 30 30
20 FT WIND GUST.45 45 45 55 55 55 55 60 60 60 65 65
MIX HGT (KFT)...3.0 3.5 3.0 2.5 2.0 2.5 2.0 2.5 1.5 2.0 1.5 2.5
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.30 30 30 30 30 35 35 35 35 35 45 45
THURSDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT) THEN BECOMING
SUNNY (5-15 PERCENT).
CWR.................5 PERCENT.
CHANCE OF THUNDER...4 PERCENT.
MAX TEMPERATURE.....47-52.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 25 TO 35 MPH. GUSTS UP TO 65 MPH
DECREASING TO 55 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....WEST 40 TO 45 MPH DECREASING TO 35 TO 40 MPH
LATE IN THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........77 77 77 54 54 54 31 31 31 10 10 10
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............10 10 10 10 10 10 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............35 35 37 38 39 40 42 44 46 47 48 49
RH..............74 73 70 66 61 56 50 44 39 35 32 32
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..30 30 30 30 30 30 30 30 30 25 25 25
20 FT WIND GUST.65 65 65 65 65 65 60 60 60 55 55 55
MIX HGT (KFT)...2.5 3.5 4.0 4.0 4.5 4.5 5.0 5.5 5.5 5.5 5.5 5.5
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.45 45 45 40 40 40 40 40 35 35 35 35
FORECASTER...GLINSKAS
REQUESTED BY...HANNAH PINKERTON
TYPE OF REQUEST...PRESCRIBED
.TAG 2613279.2/TFX
.DELDT 05/12/26
.FORMATTERVERSION 2.0.0
.EMAIL DONALD.ILES@USDA.GOV,NICHOLAS.BOUCHER@USDA.GOV,JASON.L.GILBERT@USDA.GOV,HANNAH.PINKERTON@USDA.GOV,JAREL.KURTZ@USDA.GOV,TFX.OPS@NOAA.GOV
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