717
FNUS75 KBYZ 061014
FWSBYZ
SPOT FORECAST FOR ARROWHEAD LODGE/FOREST WIDE BURN PLAN...USDA-FS
NATIONAL WEATHER SERVICE BILLINGS MT
414 AM MDT TUE MAY 6 2025
FORECAST IS BASED ON IGNITION TIME OF 0800 MDT ON MAY 06.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
SNOW WILL GRADUALLY DECREASE THROUGH THE DAY WITH AN INCH OR LESS
OF ADDITIONAL SNOW ACCUMULATION. NEARBY SNOTELS REPORT 4 TO 8
INCHES OF SNOW HAVE FALLEN FROM YESTERDAY AND OVERNIGHT NEAR
BURGESS JUNCTION. LIGHT EASTERLY WINDS CAN BE EXPECTED TODAY.
DRIER AND WARMER CONDITIONS WILL PREVAIL FOR WEDNESDAY WITH
SOUTHERLY WINDS AND BETTER DISPERSION.
TODAY
SKY/WEATHER.........MOSTLY CLOUDY. SNOW LIKELY IN THE MORNING. CHANCE
OF SNOW IN THE AFTERNOON.
CWR.................15 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....37-41.
MIN HUMIDITY........68-75 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHEAST TO EAST WINDS 5 TO 10 MPH.
RIDGETOP...........NORTHEAST AROUND 10 MPH.
MIXING HEIGHT.......INCREASING TO 1300 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.
SMOKE DISPERSAL.....POOR (4500 KNOT-FT EARLY IN THE MORNING
INCREASING TO 9200 KNOT-FT IN THE AFTERNOON).
TIME (MDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........93 93 92 90 89 89 89 90 90 91
WEATHER COV.....DEF LKY LKY LKY CHC CHC CHC CHC CHC CHC
WEATHER TYPE....SN SN SN SN SN SN SN SN SN SN
TSTM COV........
CHC OF LTNG (%).0 0 0 0 0 0 0 10 10 10
TEMP............25 27 29 31 34 36 36 36 37 37
RH..............100 87 82 80 75 73 74 78 78 83
20 FT WIND DIR..NE NE NE NE NE NE NE NE E E
20 FT WIND SPD..6 5 5 5 5 5 6 6 6 6
20 FT WIND GUST.10 10 10 10 10 10 10 10 11 11
SDSP KT-FT/1000.5 9 8 8 9 8 8 8 8 7
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY BECOMING PARTLY CLOUDY. SLIGHT CHANCE
OF RAIN AND SNOW EARLY IN THE EVENING.
CWR.................LESS THAN 10 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....27-31.
MAX HUMIDITY........89-93 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......BECOMING SOUTH 6 TO 12 MPH OVERNIGHT.
RIDGETOP...........SOUTH 10 TO 16 MPH.
MIXING HEIGHT.......DECREASING TO 400 FT AGL OVERNIGHT.
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
SMOKE DISPERSAL.....POOR (7000 KNOT-FT EARLY IN THE EVENING
DECREASING TO 2500 KNOT-FT LATE IN THE NIGHT).
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........91 83 66 58 55 48 45 42 35 31 38 51
WEATHER COV.....SCH SCH SCH
WEATHER TYPE....RS RS RS
TSTM COV........
CHC OF LTNG (%).10 10 10 0 0 0 0 0 0 0 0 0
TEMP............36 36 35 32 32 31 32 33 32 32 31 30
RH..............82 84 90 91 91 91 91 89 88 88 89 91
20 FT WIND DIR..SE SE S S S S S S S S S S
20 FT WIND SPD..6 6 5 5 5 5 6 6 7 8 8 8
20 FT WIND GUST.11 10 10 8 8 8 10 10 11 12 12 12
SDSP KT-FT/1000.5 4 3 3 4 4 4 5 6 6 7 7
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....53-57.
MIN HUMIDITY........42-49 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH TO SOUTHWEST WINDS 5 TO 10 MPH,
INCREASING TO 8 TO 16 MPH IN THE AFTERNOON.
GUSTS TO 20 MPH IN THE LATE MORNING AND
AFTERNOON.
RIDGETOP...........SOUTH TO SOUTHWEST 10 TO 20 MPH.
MIXING HEIGHT.......INCREASING TO 3500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH.
SMOKE DISPERSAL.....POOR (7400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (61100 KNOT-FT) IN THE
AFTERNOON.
TIME (MDT) 6 AM 9 AM NOON 3 PM
SKY (%).........58 37 29 25
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF LTNG (%).0 0 0 0
TEMP............32 42 52 55
RH..............88 71 55 46
20 FT WIND......S 8G13 SW 8G16 S 9G18 S 10G18
SDSP KT-FT/1000.7 20 50 59
FORECASTER...PALMQUIST
REQUESTED BY...JOEL COOPER
TYPE OF REQUEST...PRESCRIBED
.TAG 2513127.0/BYZ
.DELDT 05/06/25
.FORMATTERVERSION 2.0.0
.EMAIL JOEL.COOPER@USDA.GOV
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