746
FNUS75 KTFX 182027
FWSTFX
SPOT FORECAST FOR IA #99...HELENA INTERAGENCY DISPATCH
NATIONAL WEATHER SERVICE GREAT FALLS MT
227 PM MDT WED MAR 18 2026
FORECAST IS BASED ON FORECAST START TIME OF 1400 MDT ON MARCH 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A RIDGE WILL KEEP DRY, WARM, AND BREEZY CONDITIONS WEDNESDAY AND
THURSDAY TO THE BURN AREA. STRONG WESTERLY FLOW ALOFT WILL
CONTINUE TO MIX DOWN BREEZY WEST WINDS TO THE SURFACE THROUGH THE
AFTERNOON. FREQUENT WIND GUSTS BETWEEN 30-40 MPH WITH UP TO
ISOLATED 45 MPH WILL BE POSSIBLE THROUGH 1700 TO 1900 BEFORE WINDS
DECREASE IN THE EVENING. MINIMUM RELATIVE HUMIDITY THIS AFTERNOON
WILL CONTINUE TO BE CRITICAL, WITH POORER OVERNIGHT HUMIDITY
RECOVERY. THURSDAY, SOUTHWEST TO WEST WINDS PICK UP FOR THE
AFTERNOON, WITH WIND GUSTS OF 30-40 MPH FORECASTED. THURSDAY
AFTERNOON HUMIDITIES WILL DROP INTO THE LOW TO MID TEENS.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....65-70.
MIN HUMIDITY........9-15 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......BREEZY. WEST WINDS AROUND 25 MPH WITH GUSTS TO
AROUND 40 MPH.
RIDGETOP...........WEST AROUND 40 MPH.
MIXING HEIGHT.......7000 FT AGL.
TRANSPORT WINDS.....WEST AROUND 40 MPH.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....37-42.
MAX HUMIDITY........39-44 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 35
MPH DECREASING TO AROUND 10 MPH OVERNIGHT.
RIDGETOP...........WEST AROUND 35 MPH.
MIXING HEIGHT.......0 FT AGL.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....67-72.
MIN HUMIDITY........12-17 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......BREEZY. SOUTHWEST WINDS 10 TO 20 MPH SHIFTING
TO THE WEST 20 TO 25 MPH WITH GUSTS TO AROUND
40 MPH IN THE AFTERNOON.
RIDGETOP...........WEST AROUND 40 MPH.
MIXING HEIGHT.......8000 FT AGL.
TRANSPORT WINDS.....WEST AROUND 30 MPH.
FORECASTER...WILSON
REQUESTED BY...ALEX GOOSMANN
TYPE OF REQUEST...WILDFIRE
.TAG 2606362.0/TFX
.DELDT 03/18/26
.FORMATTERVERSION 2.0.0
.EMAIL MTHDC@FIRENET.GOV, TFX.OPS@NOAA.GOV
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