951
FNAK71 PAFC 201443
FWSAER
SPOT FORECAST FOR JBER IPBC RX FIRE...USWFS
NATIONAL WEATHER SERVICE ANCHORAGE AK
643 AM AKDT WED MAY 20 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 AKDT ON MAY 20.
DISCUSSION
MULTIPLE FRONTS WILL MOVE INTO THE REGION THROUGH THURSDAY, BRINGING
PERIODS OF LIGHT RAIN AND MAINTAINING RELATIVELY HIGH RHS. THE
STEADY RAIN THAT FELL EARLY THIS MORNING HAS ENDED, WITH JUST A
FEW LINGERING SPRINKLES. THE REST OF TODAY WILL BE MOSTLY DRY WITH
JUST A CHANCE OF A BRIEF LIGHT RAIN SHOWER THIS AFTERNOON AND
EVENING. ANOTHER ROUND OF LIGHT RAIN WILL MOVE IN OVERNIGHT
TONIGHT THROUGH EARLY THURSDAY MORNING, WITH A FEW SHOWERS
LINGERING IN THE AREA THROUGH THE DAY THURSDAY. RAINFALL AMOUNTS
TODAY AND TOMORROW WILL BE LIGHT.
WINDS WILL BE LIGHT AND VARIABLE UNTIL THURSDAY AFTERNOON, AT
WHICH POINT EXPECT SOUTHEAST WINDS GUSTING AS HIGH AS 20 TO 25 MPH.
TODAY
SKY/WEATHER.........CLOUDY (90-100 PERCENT). A CHANCE OF RAIN IN THE
MORNING. CHANCE OF RAIN SHOWERS IN THE
AFTERNOON.
CWR.................5 PERCENT.
CHANCE OF PCPN......40 PERCENT.
TSTM COVERAGE.......NONE.
MAX TEMPERATURE.....AROUND 46.
MIN HUMIDITY........56 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 6 MPH SHIFTING TO THE
SOUTHWEST AROUND 6 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......2200 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 0 MPH.
VENTILATION RATE....POOR (0 M^2/S).
PCPN AMOUNT.........0.04 INCHES.
SNOWFALL AMOUNT.....0.0 INCHES.
TIME (AKDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........98 98 98 98 98 98 98 98 89 89
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC
WEATHER TYPE....RN RN RN RN RN RN RN RN RW RW
CWR.............5 0 0 0 0 0 0 5 5 5
CHC OF PCPN (%).70 70 60 60 60 50 50 50 40 40
TEMP............40 40 41 41 42 43 44 44 44 45
RH..............89 90 91 88 85 82 80 78 76 73
20 FT WIND DIR..N N N N N N N N SW SW
20 FT WIND SPD..5 5 6 6 6 5 5 5 6 6
20 FT WIND GUST.6 6 7 7 7 8 8
MIX HGT (KFT)...0.7 0.7 2.1 2.1 2.1 2.1 2.1 2.1 2.2 2.2
TRANSP WIND DIR.N N N N N N N N N N
TRANSP WIND SPD.0 0 0 0 0 0 0 0 0 0
VENT (M^2/S)....0 0 0 0 0 0 0 0 0 0
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). CHANCE OF RAIN
SHOWERS IN THE EVENING, THEN CHANCE OF RAIN
OVERNIGHT.
CWR.................0 PERCENT INCREASING TO 20 PERCENT AFTER 3 AM.
CHANCE OF PCPN......40 PERCENT.
TSTM COVERAGE.......NONE.
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........90 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 6 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING SOUTHWEST AROUND
8 MPH OVERNIGHT BECOMING LIGHT.
MIXING HEIGHT.......700 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 0 MPH.
VENTILATION RATE....POOR (0 M^2/S).
PCPN AMOUNT.........0.02 INCHES.
SNOWFALL AMOUNT.....0.0 INCHES.
TIME (AKDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........89 77 77 77 78 78 78 79 79 79 94 94
WEATHER COV.....CHC SCH SCH SCH SCH SCH SCH SCH SCH SCH CHC CHC
WEATHER TYPE....RW RW RW RW RN RN RN RN RN RN RN RN
CWR.............0 0 0 0 0 0 0 0 0 0 10 20
CHC OF PCPN (%).40 20 20 20 20 20 20 20 20 40 60 60
TEMP............45 46 45 45 44 43 42 41 41 40 40 40
RH..............70 68 70 72 73 76 79 81 83 85 87 88
20 FT WIND DIR..SW W W W SW SW SW SW SW SW SW SW
20 FT WIND SPD..6 5 5 5 3 3 3 8 8 8 3 3
20 FT WIND GUST.8 6 6 6 10 10 10 8 8
MIX HGT (KFT)...2.2 2.2 2.2 2.2 0.7 0.7 0.7 0.7 0.7 0.7 0.9 0.9
TRANSP WIND DIR.N N N N N N N N N N N N
TRANSP WIND SPD.0 0 0 0 0 0 0 0 0 0 0 0
VENT (M^2/S)....0 0 0 0 0 0 0 0 0 0 0 0
THURSDAY
SKY/WEATHER.........CLOUDY (85-95 PERCENT). RAIN LIKELY IN THE
MORNING, THEN A CHANCE OF RAIN SHOWERS.
CWR.................30 PERCENT.
CHANCE OF PCPN......60 PERCENT.
TSTM COVERAGE.......NONE.
MAX TEMPERATURE.....AROUND 45.
MIN HUMIDITY........63 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING EAST AROUND 5 MPH LATE IN
THE MORNING, THEN SHIFTING TO THE SOUTHEAST 8
TO 12 MPH WITH GUSTS TO 20 MPH IN THE AFTERNOON.
MIXING HEIGHT.......2700 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 0 MPH.
VENTILATION RATE....POOR (0 M^2/S).
PCPN AMOUNT.........0.05 INCHES.
SNOWFALL AMOUNT.....0.0 INCHES.
TIME (AKDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........94 98 98 98 96 96 96 92 92 92 77 77
WEATHER COV.....CHC LKY LKY LKY CHC CHC CHC CHC CHC CHC CHC CHC
WEATHER TYPE....RN RN RN RN RW RW RW RW RW RW RW RW
CWR.............30 30 30 30 30 30 30 30 30 30 20 20
CHC OF PCPN (%).60 60 60 60 50 50 50 50 50 50 40 40
TEMP............40 40 40 41 41 42 43 44 44 44 45 45
RH..............89 90 90 90 90 87 83 80 77 74 70 68
20 FT WIND DIR..SW NE NE NE E E E SE SE SE SE SE
20 FT WIND SPD..3 1 1 1 5 5 5 8 8 8 12 12
20 FT WIND GUST.8 3 3 3 6 6 6 18 18 18 20 20
MIX HGT (KFT)...0.9 0.9 0.9 0.9 1.6 1.6 1.6 1.6 1.6 1.6 2.7 2.7
TRANSP WIND DIR.N N N N N N N N N N N N
TRANSP WIND SPD.0 0 0 0 0 0 0 0 0 0 0 0
VENT (M^2/S)....0 0 0 0 0 0 0 0 0 0 0 0
FORECASTER...RIBAIL
REQUESTED BY...BRYAN QUIMBY
TYPE OF REQUEST...PRESCRIBED
.TAG 2613851.2/AER
.DELDT 05/20/26
.FORMATTERVERSION 2.0.0
.EMAIL RAWLIN_MYERS@FWS.GOV,BRYAN_QUIMBY@FWS.GOV
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