323
FNUS75 KBYZ 030629
FWSBYZ
SPOT FORECAST FOR BARTHOLOMEW RESERVOIR...BLM
NATIONAL WEATHER SERVICE BILLINGS MT
1229 AM MDT MON AUG 3 2026
FORECAST IS BASED ON FORECAST START TIME OF 0100 MDT ON AUGUST 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
..RED FLAG WARNING IN EFFECT UNTIL 3 AM MDT EARLY THIS MORNING
DISCUSSION
NORTHERLY WINDS WILL CONTINUE TONIGHT WITH OCCASIONAL GUSTS TO
AROUND 20 MPH. RH RECOVERIES WILL BE POOR AT AROUND 40 PERCENT.
NORTHERLY WINDS INCREASE THIS MORNING WITH THE ARRIVAL OF MUCH
COOLER CANADIAN AIR. WINDS WILL GUST TO AROUND 30 MPH BY LATE
MORNING CONTINUING INTO EARLY MONDAY EVENING. CLOUD COVER
INCREASES BY MID DAY, WITH A SLIGHT CHANCE FOR A LIGHT SHOWER
DURING THE AFTERNOON HOURS. HOWEVER, WETTING RAIN CHANCES REMAIN
NEAR ZERO. HIGHS WILL STAY IN THE 70S TODAY WITH MINRH VALUES NEAR
30 PERCENT. WINDS WILL DIMINISH EARLY THIS EVENING TURNING TO THE
WEST BY TUESDAY. RH RECOVERIES TUESDAY MORNING WILL BE NEAR 70
PERCENT. TUESDAY WILL BE SUNNY AND DRY WITH HIGHS IN THE 70S
AGAIN. CHAMBERS
REST OF TONIGHT
SKY/WEATHER.........MOSTLY CLEAR. AREAS OF SMOKE.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....62-67.
MAX HUMIDITY........38-42 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH WINDS 6 TO 12 MPH, GUSTS TO 21 MPH.
RIDGETOP...........NORTH AROUND 11 MPH.
MIXING HEIGHT.......700 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 17 MPH.
TODAY
SKY/WEATHER.........MOSTLY SUNNY IN THE MORNING, BECOMING MOSTLY CLOUDY
IN THE AFTERNOON. AREAS OF SMOKE THROUGH THE DAY.
ISOLATED LIGHT SHOWERS IN THE AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....72-77.
MIN HUMIDITY........28-33 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTH WINDS 10 TO 20 MPH WITH GUSTS TO AROUND
30 MPH.
RIDGETOP...........NORTH AROUND 15 MPH.
MIXING HEIGHT.......7400 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTH AROUND 33 MPH.
MONDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....45-50.
MAX HUMIDITY........63-69 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHWEST WINDS 6 TO 14 MPH WITH GUSTS TO
AROUND 21 MPH IN THE EVENING BECOMING LIGHT
OVERNIGHT.
RIDGETOP...........NORTHWEST AROUND 14 MPH.
MIXING HEIGHT.......DECREASING TO 400 FT AGL OVERNIGHT.
TRANSPORT WINDS.....NORTHWEST AROUND 17 MPH.
TUESDAY
SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....71-76.
MIN HUMIDITY........18-22 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH. GUSTS TO 18 MPH IN THE
AFTERNOON.
RIDGETOP...........WEST AROUND 12 MPH.
MIXING HEIGHT.......8700 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 17 MPH.
FORECASTER...CHAMBERS
REQUESTED BY...MICHAEL COBARRUBIAS
TYPE OF REQUEST...WILDFIRE
.TAG 2618885.0/BYZ
.DELDT 08/03/26
.FORMATTERVERSION 2.0.0
.EMAIL MTMCC@FIRENET.GOV
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