300
FNAK71 PAFC 060324
FWSAER
SPOT FORECAST FOR MASTADON FIRE...DIVISION OF FORESTRY
NATIONAL WEATHER SERVICE ANCHORAGE AK
724 PM AKDT FRI JUN 5 2026
FORECAST IS BASED ON FORECAST START TIME OF 2000 AKDT ON JUNE 05.
DISCUSSION
WARM AND DRY CONDITIONS WILL CONTINUE THROUGH THE EVENING HOURS
ALONG WITH LIGHT SOUTHWESTERLY WINDS. AN ISOLATED GUST AROUND 10
TO 15 MPH IS POSSIBLE THROUGH TONIGHT BEFORE WINDS DIMINISH AND
BECOME MORE SOUTHEASTERLY. ISOLATED SHOWERS ARE BEGINNING TO
DEVELOP BOTH NORTH AND SOUTH OF THE FORECAST AREA; IT IS POSSIBLE
THAT A SHOWER MAY DEVELOP AROUND OR OVER THE FORECAST AREA BY LATE
THIS EVENING. SHOWERS MAY LINGER INTO THE OVERNIGHT HOURS. SATURDAY
IS EXPECTED TO BE COOLER, WITH ANOTHER CHANCE FOR SCATTERED
SHOWERS STARTING AROUND NOON. AN ISOLATED THUNDERSTORM CANNOT BE
RULED OUT FOR SATURDAY AFTERNOON. WHILE LOW PROBABILITY, A
WETTING RAIN IS POSSIBLE IN ANY HEAVY SHOWER THAT DEVELOPS FOR
SATURDAY. A COOLER AND CLOUDIER TREND CONTINUES INTO SUNDAY ALONG
WITH ISOLATED SHOWERS.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). A SLIGHT CHANCE
OF RAIN SHOWERS LATE THIS EVENING THROUGH THE
OVERNIGHT HOURS.
CWR.................10 PERCENT.
CHANCE OF PCPN......20 PERCENT.
TSTM COVERAGE.......NONE.
MIN TEMPERATURE.....AROUND 44.
MAX HUMIDITY........76 PERCENT.
WIND (20 FT)........SOUTH TO SOUTHWEST WIND LESS THAN 5 MPH
BECOMING SOUTHEAST AROUND 6 MPH OVERNIGHT.
MIXING HEIGHT.......AROUND 5000 FT FALLING TO AROUND 400 FT AGL
OVERNIGHT.
TRANSPORT WINDS.....SOUTHWEST AROUND 7 MPH SHIFTING TO THE SOUTH 6
TO 9 MPH IN THE LATE EVENING AND OVERNIGHT.
PCPN AMOUNT.........0.04 INCHES.
TIME (AKDT) 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........0 0 11 11 11 47 47 47 29 29
WEATHER COV.....SCH SCH SCH SCH SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW RW RW RW
CWR.............0 0 0 0 0 0 0 0 10 10
CHC OF PCPN (%).20 20 20 20 20 20 20 20 10 10
TEMP............68 66 62 56 52 50 47 46 46 44
RH..............35 42 49 56 62 66 69 70 71 76
20 FT WIND DIR..SW SW S E E SE SE SE S S
20 FT WIND SPD..4 4 2 2 2 6 6 6 6 6
20 FT WIND GUST.8 7 4 4 4 8 8 8 8 8
MIX HGT (KFT)...4.9 4.9 4.4 3.4 2.6 1.4 0.7 0.4 0.4 0.7
TRANSP WIND DIR.SW SW S S S S S S S S
TRANSP WIND SPD.7 7 6 6 6 8 9 9 8 8
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). AN ISOLATED
RAIN SHOWER LATE MORNING WITH SCATTERED RAIN
SHOWERS IN THE AFTERNOON.
SLIGHT CHANCE OF A THUNDERSTORM IN THE
AFTERNOON.
CWR.................10 PERCENT DECREASING TO 0 PERCENT LATE IN THE
AFTERNOON.
CHANCE OF PCPN......10 PERCENT THROUGH LATE MORNING INCREASING TO
40 PERCENT.
TSTM COVERAGE.......ISOLATED.
MAX TEMPERATURE.....AROUND 63.
MIN HUMIDITY........43 PERCENT.
WIND (20 FT)........SOUTH WINDS AROUND 6 MPH EARLY IN THE MORNING
BECOMING LIGHT, THEN BECOMING SOUTHWEST 6 TO
10 MPH IN THE LATE MORNING AND AFTERNOON.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS IN THE AFTERNOON.
MIXING HEIGHT.......AROUND 900 FEET THROUGH MID MORNING RISING
TO AROUND 4200 FT AGL.
TRANSPORT WINDS.....SOUTH 8 TO 13 MPH.
PCPN AMOUNT.........0.04 INCHES.
TIME (AKDT) 6 AM 9 AM NOON 3 PM
SKY (%).........29 29 40 44
WEATHER COV..... SCTTRD SCTTRD
WEATHER TYPE....NONE NONE RNSHWR RNSHWR
CWR.............10 10 10 10
CHC OF PCPN (%).10 10 30 40
TEMP............45 53 61 63
RH..............75 60 48 43
20 FT WIND......S 6G8 S 3G5 SW 6G9 SW 9G14
MIX HGT (FT)....900 900 3900 4200
TRANSPORT WIND..S 8 S 8 S 9 S 12
SATURDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING
CLOUDY (85-95 PERCENT). SCATTERED RAIN SHOWERS
EARLY IN THE EVENING. ISOLATED RAIN SHOWERS
AFTER 3 AM.
CWR.................0 PERCENT.
CHANCE OF PCPN......50 PERCENT IN THE EVENING DECREASING TO 10
PERCENT BY MIDNIGHT.
TSTM COVERAGE.......NONE.
MIN TEMPERATURE.....AROUND 42.
MAX HUMIDITY........81 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 10 MPH IN THE EVENING AND
OVERNIGHT BECOMING LIGHT BY EARLY SUNDAY
MORNING.
MIXING HEIGHT.......AROUND 3800 FT IN THE EVENING FALLING TO
AROUND 500 FT AGL OVERNIGHT.
TRANSPORT WINDS.....SOUTH 6 TO 13 MPH.
PCPN AMOUNT.........0.02 INCHES.
TIME (AKDT) 6 PM 9 PM MIDNGT 3 AM
SKY (%).........40 40 26 39
WEATHER COV.....SCTTRD SCTTRD
WEATHER TYPE....RNSHWR RNSHWR NONE NONE
CWR.............0 0 0 0
CHC OF PCPN (%).50 30 10 10
TEMP............60 56 50 43
RH..............50 57 72 79
20 FT WIND......SW 9G14 SW 9G13 SW 8G12 S 5G7
MIX HGT (FT)....3700 3300 1600 500
TRANSPORT WIND..S 13 S 12 S 9 S 6
SUNDAY
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). ISOLATED RAIN
SHOWERS.
CWR.................0 PERCENT.
CHANCE OF PCPN......20 PERCENT.
TSTM COVERAGE.......NONE.
MAX TEMPERATURE.....AROUND 57.
MIN HUMIDITY........64 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHWEST 5 TO 10 MPH IN
THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......AROUND 900 FT IN THE MORNING RISING TO AROUND
3700 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 6 TO 10 MPH.
PCPN AMOUNT.........0.00 INCHES.
TIME (AKDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........91 92 92 92 80 80 80 93 93 93 89 89
WEATHER COV.....ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).20 20 20 20 20 20 20 20 20 20 20 20
TEMP............44 44 46 48 49 51 52 53 54 55 56 56
RH..............80 80 78 76 74 71 67 64 64 65 66 66
20 FT WIND DIR..S SW SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..2 1 1 1 5 5 5 7 7 7 10 10
20 FT WIND GUST.3 7 7 7 9 9 9 15 15
MIX HGT (KFT)...1.0 1.0 1.0 1.0 2.3 2.3 2.3 2.5 2.7 2.9 3.4 3.7
TRANSP WIND DIR.S S S S SW SW SW SW SW SW SW SW
TRANSP WIND SPD.7 6 6 6 8 8 8 8 8 8 10 10
FORECASTER...MARKLE
REQUESTED BY...IC ERVIN
TYPE OF REQUEST...WILDFIRE
.TAG 2614947.2/AER
.DELDT 06/05/26
.FORMATTERVERSION 2.0.0
.EMAIL DOF.ACDC.DISPATCH@ALASKA.GOV
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