927
FNUS75 KTFX 060133
FWSTFX
SPOT FORECAST FOR BLACK DIAMOND...USFS
NATIONAL WEATHER SERVICE GREAT FALLS MT
733 PM MDT TUE MAY 5 2026
FORECAST IS BASED ON IGNITION TIME OF 2000 MDT ON MAY 05.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
ON/OFF LIGHT SNOW SHOWERS WILL CONTINUE THROUGH 10 PM THIS
EVENING. EXPECTED RAINFALL SHOULD BE LESS THAN 0.03 INCHES
TONIGHT. IT IS LOOKING DRY DURING THE DAY WED, WITH LIGHT WINDS
UNTIL MID AFTERNOON. IT TURNS BREEZY BY WED EVENING, WITH
SCATTERED RAIN SHOWERS WED EVENING THRU THU.
REST OF TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (15-25 PERCENT). SLIGHT CHANCE OF
SNOW SHOWERS EARLY IN THE EVENING.
CWR.................5 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MIN TEMPERATURE.....23-28.
MAX HUMIDITY........70-75 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHEAST WINDS AROUND 7 MPH EARLY IN THE
EVENING BECOMING DOWNSLOPE AFTER MIDNIGHT.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH DECREASING TO AROUND 10
MPH LATE IN THE EVENING, THEN SHIFTING TO THE
WEST AFTER 3 AM.
TIME (MDT) 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........40 18 13 17 7 4 3 5 6 11
WEATHER COV.....SCH SCH
WEATHER TYPE....SW SW
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............42 37 34 33 31 29 28 27 26 26
RH..............39 46 50 52 56 56 58 61 62 60
20 FT WIND DIR..NE NE NE NE E NE E SW SW SW
20 FT WIND SPD..5 5 5 0 0 0 0 0 0 0
20 FT WIND GUST.15 10 10 5 5 5 5 5 5 5
MIX HGT (KFT)...4.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.5
TRANSP WIND DIR.NE NE NE NE NE NE N NW W W
TRANSP WIND SPD.15 10 10 5 5 5 5 5 5 5
WEDNESDAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....61-66.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......LIGHT WINDS BECOMING WEST AROUND 15 MPH
BY LATE AFTERNOON.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....WEST 5 TO 10 MPH INCREASING TO AROUND 25 MPH
BY LATE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........11 12 9 9 4 6 5 5 5 5 7 20
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............25 27 31 35 42 46 50 53 58 60 62 63
RH..............64 57 48 41 33 30 28 26 25 26 25 25
20 FT WIND DIR..SW SW W SW W W W W W W W W
20 FT WIND SPD..0 0 0 5 5 5 10 10 10 10 10 15
20 FT WIND GUST.5 5 5 10 10 15 15 20 20 20 25 25
MIX HGT (KFT)...1.0 1.0 1.5 2.5 3.0 3.5 4.0 4.5 5.0 5.0 5.5 5.5
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.5 5 5 10 15 15 15 20 20 20 20 25
WEDNESDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS LATE IN THE EVENING. CHANCE OF
RAIN SHOWERS OVERNIGHT.
CWR.................5 PERCENT INCREASING TO 20 PERCENT OVERNIGHT.
CHANCE OF THUNDER...10 PERCENT.
MIN TEMPERATURE.....44-49.
MAX HUMIDITY........70-75 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 20 TO 25 MPH DECREASING TO 15 TO 20 MPH IN
THE LATE EVENING AND OVERNIGHT.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........50 50 50 86 86 86 96 96 96 57 57 57
WEATHER COV..... SCH SCH SCH CHC CHC CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW
TSTM COV........
CWR.............10 10 10 10 10 10 20 20 20 20 20 20
CHC OF THDR (%).10 10 10 10 10 10 10 10 10 10 10 10
TEMP............61 62 59 55 53 52 50 49 48 47 47 46
RH..............27 32 39 46 51 55 58 60 61 63 67 72
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 10 10 10 5 5 5
20 FT WIND GUST.20 20 20 15 15 15 15 15 15 15 15 15
MIX HGT (KFT)...5.0 3.5 2.0 1.0 0.5 0.5 1.0 1.0 1.0 1.0 1.0 0.5
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.25 20 20 15 15 20 20 20 20 20 20 20
THURSDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF RAIN
SHOWERS IN THE MORNING, THEN RAIN SHOWERS
LIKELY AND SLIGHT CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
CWR.................5 PERCENT INCREASING TO 20 PERCENT IN THE
AFTERNOON.
CHANCE OF THUNDER...20 PERCENT.
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........32-37 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
MIXING HEIGHT.......6000 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........59 59 59 59 59 59 73 73 73 73 73 73
WEATHER COV.....CHC CHC CHC CHC CHC CHC LKY LKY LKY LKY LKY LKY
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH SCH SCH SCH
CWR.............10 10 10 10 10 10 20 20 20 20 20 20
CHC OF THDR (%).10 10 10 10 10 10 20 20 20 20 20 20
TEMP............46 46 48 50 52 53 55 57 58 59 60 61
RH..............73 69 62 55 49 44 40 39 40 40 39 37
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..5 5 5 10 10 10 10 10 10 10 10 10
20 FT WIND GUST.15 15 15 15 15 15 20 20 20 20 20 20
MIX HGT (KFT)...1.0 1.5 2.5 3.5 4.5 5.5 6.0 6.0 5.5 5.5 5.5 5.5
TRANSP WIND DIR.W W W W W W W W W W NW NW
TRANSP WIND SPD.20 20 20 20 20 20 20 20 15 15 15 15
FORECASTER...BRUSDA
REQUESTED BY...JAREL KURTZ
TYPE OF REQUEST...PRESCRIBED
.TAG 2612468.4/TFX
.DELDT 05/05/26
.FORMATTERVERSION 2.0.0
.EMAIL JAREL.KURTZ@USDA.GOV
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