989
FNAK72 PAFC 291402
FWSALU
SPOT FORECAST FOR FY 2026 KATMAI PILE BURNING...WILDLAND FIRE SERVICE (NPS)
NATIONAL WEATHER SERVICE ANCHORAGE AK
602 AM AKDT TUE SEP 29 2026
FORECAST IS BASED ON IGNITION TIME OF 0700 AKDT ON SEPTEMBER 29.
DISCUSSION
HIGH PRESSURE BUILDING INTO SOUTHWEST ALASKA WILL KEEP CONDITIONS
MOSTLY DRY TODAY, WITH PARTLY SUNNY SKIES AND LIGHT NORTH TO
NORTHWESTERLY WINDS. CLOUD COVER INCREASES TONIGHT AS A WEAK
DISTURBANCE APPROACHES THE AREA. THIS DISTURBANCE MAY BRING A FEW
LIGHT RAIN OR SNOW SHOWERS TO THE AREA ON WEDNESDAY, THOUGH
PRECIPITATION AMOUNTS SHOULD REMAIN MINIMAL. LIGHT NORTHERLY FLOW
TONIGHT WILL BECOME NORTHWESTERLY AGAIN DURING THE DAY WEDNESDAY.
TODAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 45.
MIN HUMIDITY........69 PERCENT.
WIND (20 FT)........NORTHWEST WINDS AROUND 6 MPH.
MIXING HEIGHT.......2300 FT AGL.
TRANSPORT WINDS.....NORTH 9 TO 12 MPH.
PCPN AMOUNT.........0.00 INCHES.
SNOWFALL AMOUNT.....0.0 INCHES.
TIME (AKDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........66 66 66 50 50 50 58 58 58 72 72
WEATHER COV.....
WEATHER TYPE....
CWR.............0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 10
TEMP............39 39 39 40 42 43 44 44 45 45 45
RH..............92 92 91 88 84 82 76 74 71 69 71
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW NW
20 FT WIND SPD..6 6 6 6 6 6 6 6 6 6 6
20 FT WIND GUST.9 9 9 9 9 9 10 10 10 8 8
MIX HGT (KFT)...0.6 0.6 0.6 2.3 2.3 2.3 2.3 2.3 2.3 2.3 2.3
TRANSP WIND DIR.N N N N N N N N N NW NW
TRANSP WIND SPD.9 9 9 10 10 10 12 12 12 10 10
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....AROUND 34.
MAX HUMIDITY........88 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 6 MPH EARLY IN THE EVENING
BECOMING LIGHT.
MIXING HEIGHT.......700 FT AGL.
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.
PCPN AMOUNT.........0.00 INCHES.
SNOWFALL AMOUNT.....0.0 INCHES.
TIME (AKDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........72 78 78 78 78 78 78 79 79 79 80 80
WEATHER COV.....
WEATHER TYPE....
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 10 10
TEMP............44 43 42 40 39 39 38 37 37 37 36 36
RH..............72 74 76 78 81 80 81 82 82 83 83 84
20 FT WIND DIR..NW W W W NW NW NW W W W N N
20 FT WIND SPD..6 5 5 5 3 3 3 1 1 1 0 0
20 FT WIND GUST.8 8 8 8 8 8 8 5 5 5
MIX HGT (KFT)...2.3 2.3 2.3 2.3 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7
TRANSP WIND DIR.NW NW NW NW NW NW NW NW NW NW N N
TRANSP WIND SPD.10 8 8 8 6 6 6 5 5 5 5 5
WEDNESDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS. SLIGHT CHANCE OF SNOW SHOWERS IN
THE LATE MORNING AND AFTERNOON.
CWR.................0 PERCENT.
CHANCE OF PCPN......20 PERCENT.
MAX TEMPERATURE.....AROUND 44.
MIN HUMIDITY........64 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST AROUND 5 MPH.
MIXING HEIGHT.......3400 FT AGL.
TRANSPORT WINDS.....NORTH 5 TO 9 MPH.
PCPN AMOUNT.........0.00 INCHES.
SNOWFALL AMOUNT.....0.0 INCHES.
TIME (AKDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........80 79 79 79 71 71 71 70 70 70 70 70
WEATHER COV..... SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RS RS RS RS RS RS RS RS
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 20 20 20 20 20 20 20 20 20 20 20
TEMP............36 35 34 35 37 38 40 41 42 43 44 43
RH..............83 87 88 87 83 81 76 72 70 67 64 66
20 FT WIND DIR..N N N N NW NW NW NW NW NW NW NW
20 FT WIND SPD..0 2 2 2 2 2 2 3 3 3 5 5
20 FT WIND GUST. 5 5 5
MIX HGT (KFT)...0.7 0.7 0.7 0.7 2.1 2.1 2.1 2.1 2.1 2.1 3.4 3.4
TRANSP WIND DIR.N N N N N N N NW NW NW N N
TRANSP WIND SPD.5 5 5 5 7 7 7 9 9 9 9 9
FORECASTER...METZLER
REQUESTED BY...NATHAN GILMORE
TYPE OF REQUEST...PRESCRIBED
.TAG 2622215.8/ALU
.DELDT 09/29/26
.FORMATTERVERSION 2.0.0
.EMAIL NATHAN_GILMORE@NPS.GOV
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