810
FNUS75 KTFX 261936
FWSTFX
SPOT FORECAST FOR ELK SMITH UNIT 13 FUEL BREAK...USFS
NATIONAL WEATHER SERVICE GREAT FALLS MT
136 PM MDT SUN APR 26 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON APRIL 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A COLD UPPER LEVEL STORM SYSTEM CENTERED OVER THE CANADIAN
PRAIRIES WILL GRADUALLY WEAKEN AND MOVE AWAY FROM THE REGION
EARLY THIS WEEK, BUT COOLER AND UNSETTLED CONDITIONS ON THE BACK
SIDE OF THIS SYSTEM CONTINUE THROUGH MONDAY WITH A TREND BACK TO
MORE SEASONAL TEMPERATURES BEGINNING TUESDAY. DAYTIME WARMING
WILL LEAD TO SNOW SHOWER DEVELOPMENT MONDAY AFTERNOON WITH ENOUGH
WARMING ON TUESDAY FOR MAINLY RAIN SHOWERS BELOW 6000 FT. WINDS
REMAIN LIGHT AND SOMEWHAT VARIABLE ON MONDAY BUT BECOME MORE
STEADY FROM THE SOUTH MONDAY AFTERNOON WITH GENERAL SOUTH TO
SOUTHWEST WINDS CONTINUING THROUGH TUESDAY.
MONDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF
SNOW SHOWERS, MAINLY IN THE AFTERNOON.
CWR.................10 PERCENT.
CHANCE OF THUNDER...5 PERCENT.
MAX TEMPERATURE.....40-45.
MIN HUMIDITY........50-55 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING SOUTH AROUND 5 MPH IN THE
AFTERNOON.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 5 MPH SHIFTING TO THE WEST LATE IN
THE AFTERNOON.
TIME (MDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........71 62 60 57 62 68 65 65
WEATHER COV..... SCH CHC CHC CHC CHC CHC CHC
WEATHER TYPE.... SW SW SW SW SW SW SW
TSTM COV........
CWR.............10 10 10 10 10 10 10 10
CHC OF THDR (%).0 0 10 10 10 10 10 10
TEMP............31 33 35 37 39 41 40 40
RH..............60 60 58 55 55 55 55 55
20 FT WIND DIR..E E E SE SE S S S
20 FT WIND SPD..5 5 5 5 5 5 5 5
20 FT WIND GUST. 10 10 10 10 10 10 10
MIX HGT (KFT)...1.5 2.0 2.0 2.5 2.5 3.0 3.0 2.5
TRANSP WIND DIR.SE S S S S S SW W
TRANSP WIND SPD.5 5 5 5 5 5 5 5
MONDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
PARTLY CLOUDY (35-45 PERCENT). SLIGHT CHANCE OF
SNOW SHOWERS EARLY IN THE EVENING.
CWR.................5 PERCENT.
CHANCE OF THUNDER...5 PERCENT.
MIN TEMPERATURE.....23-28.
MAX HUMIDITY........71-76 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS AROUND 5 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING WEST AROUND 5 MPH
OVERNIGHT.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 5 TO 10 MPH.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........72 72 72 49 49 49 37 37 37 30 30 30
WEATHER COV.....SCH SCH SCH SCH SCH SCH
WEATHER TYPE....SW SW SW SW SW SW
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............42 38 36 31 29 28 29 28 27 26 25 25
RH..............57 67 74 76 76 74 73 73 73 74 76 77
20 FT WIND DIR..S S DE SW SW SW W W W W W W
20 FT WIND SPD..5 5 5 0 0 0 5 5 5 5 5 5
20 FT WIND GUST.10 10 10 5 5 5 10 10 10 15 15 15
MIX HGT (KFT)...2.0 2.5 1.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.W NW W W W W W W W W W W
TRANSP WIND SPD.5 5 5 5 5 5 5 10 10 10 10 10
TUESDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF
RAIN AND SNOW SHOWERS IN THE AFTERNOON.
CWR.................5 PERCENT INCREASING TO 15 PERCENT IN THE
AFTERNOON.
CHANCE OF THUNDER...14 PERCENT.
MAX TEMPERATURE.....50-55.
MIN HUMIDITY........38-43 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 10 TO 15 MPH.
MIXING HEIGHT.......6500 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 15 MPH INCREASING TO AROUND 20 MPH
LATE IN THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........43 43 43 43 43 43 72 72 72 72 72 72
WEATHER COV.....SCH SCH SCH SCH SCH SCH LKY LKY LKY LKY LKY LKY
WEATHER TYPE....SW SW SW SW SW SW SW SW SW RS RS RS
TSTM COV........
CWR.............10 10 10 10 10 10 20 20 20 20 20 20
CHC OF THDR (%).0 0 0 0 0 0 10 10 10 10 10 10
TEMP............26 29 33 38 41 44 46 48 49 50 51 52
RH..............76 70 63 56 51 48 46 44 43 43 42 41
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..10 10 10 10 10 10 15 15 15 15 15 15
20 FT WIND GUST.15 15 15 15 15 15 25 25 25 25 25 25
MIX HGT (KFT)...0.5 1.0 1.5 2.0 3.0 4.5 5.5 6.0 6.5 6.5 6.5 6.0
TRANSP WIND DIR.W W W W W W W W W W W NW
TRANSP WIND SPD.10 10 10 10 10 15 15 15 20 20 20 20
FORECASTER...HOENISCH
REQUESTED BY...ANTHONY EMACIO
TYPE OF REQUEST...PRESCRIBED
.TAG 2611645.0/TFX
.DELDT 04/26/26
.FORMATTERVERSION 2.0.0
.EMAIL ANTHONY.EMACIO@USDA.GOV
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