074
FNAK71 PAFC 041610
FWSAER
SPOT FORECAST FOR WRST PILE BURN...NPS
NATIONAL WEATHER SERVICE ANCHORAGE AK
810 AM AKDT SAT APR 4 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 AKDT ON APRIL 04.
DISCUSSION
AN AREA OF LOW PRESSURE SOUTH OF YAKUTAT THIS MORNING WILL MOVE
INTO PRINCE WILLIAM SOUND BY LATE THIS EVENING. THIS SYSTEM WILL
PUSH CLOUDS OVER THE SOUTHEASTERN PORTION OF THE COPPER RIVER
BASIN TODAY. WITH THE LOW WELL TO THE SOUTH, EXPECT GENERALLY
LIGHT WINDS THROUGH TONIGHT. HOWEVER, THERE MAY BE A PERIOD OF AN
HOUR OR TWO AROUND MID-AFTERNOON WHERE THE SURFACE WIND DIRECTION
MAINTAINS A SOUTHEASTERLY DIRECTION AS THE LOW MOVES TOWARD PWS.
THERE IS ALSO A SLIGHT CHANCE OF A SNOW SHOWER THIS AFTERNOON AND
EVENING; HOWEVER THE BULK OF ANY SHOWER ACTIVITY IS EXPECTED TO
BE LIGHT IN INTENSITY AND TO REMAIN AT ELEVATION ALONG THE CHUGACH
AND WRANGELL MOUNTAINS. WINDS OVERNIGHT AND INTO SUNDAY ARE
EXPECTED TO SHIFT AND BECOME MORE NORTHERLY HIGH PRESSURE BUILDS
TO THE WEST AND LOW PRESSURE MOVES TOWARD THE ALASKA PANHANDLE.
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......10 PERCENT.
TSTM COVERAGE.......NONE.
MAX TEMPERATURE.....AROUND 41.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......1700 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 5 TO 7 MPH.
VENTILATION RATE....POOR (549-1192 M^2/S).
PCPN AMOUNT.........0.00 INCHES.
SNOWFALL AMOUNT.....0.0 INCHES.
TIME (AKDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........81 81 81 80 80 80 82 82
WEATHER COV.....
WEATHER TYPE....
CWR.............0 0 0 0 0 0 0 0
CHC OF PCPN (%).10 10 10 10 10 10 10 10
TEMP............19 26 32 36 39 42 43 43
RH..............92 67 50 38 38 38 38 41
20 FT WIND DIR..SW SW SW W W W SW SW
20 FT WIND SPD..2 2 2 2 2 2 1 1
20 FT WIND GUST. 2 2
MIX HGT (KFT)...1.7 1.7 1.7 1.7 1.7 1.7 1.1 1.1
TRANSP WIND DIR.SE SE SE SE SE SE SE SE
TRANSP WIND SPD.5 5 5 6 6 6 5 5
VENT (M^2/S)....119211921192119211921192549 549
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SLIGHT CHANCE OF
SNOW SHOWERS IN THE EVENING AND OVERNIGHT.
CWR.................0 PERCENT.
CHANCE OF PCPN......20 PERCENT.
TSTM COVERAGE.......NONE.
MIN TEMPERATURE.....AROUND 15.
MAX HUMIDITY........92 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTH 6 TO 8 MPH IN THE
LATE EVENING AND OVERNIGHT.
MIXING HEIGHT.......1100 FT AGL IN THE EVENING FALLING 400 FT.
TRANSPORT WINDS.....EAST 3 TO 5 MPH SHIFTING TO THE NORTHEAST
AROUND 5 MPH IN THE LATE EVENING AND OVERNIGHT.
VENTILATION RATE....POOR (251-549 M^2/S).
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 (%).........82 86 86 86 87 87 87 84 84 84 76 76
WEATHER COV..... SCH SCH SCH SCH SCH SCH SCH SCH SCH
WEATHER TYPE.... SW SW SW SW SW SW SW SW SW
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 10 10
TEMP............42 39 34 30 27 25 24 22 19 19 19 15
RH..............44 48 56 66 78 81 84 87 90 90 90 91
20 FT WIND DIR..SW N N N N N N N N N N N
20 FT WIND SPD..1 1 1 1 6 6 6 8 8 8 7 7
20 FT WIND GUST.2 2 2 2
MIX HGT (KFT)...1.1 1.1 1.1 1.1 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.SE E E E NE NE NE E E E NE NE
TRANSP WIND SPD.5 3 3 3 5 5 5 5 5 5 5 5
VENT (M^2/S)....549 549 549 549 282 282 282 282 282 282 251 251
SUNDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT).
CWR.................0 PERCENT IN THE MORNING AND EARLY AFTERNOON.
CHANCE OF PCPN......10 PERCENT.
TSTM COVERAGE.......NONE.
MAX TEMPERATURE.....AROUND 44.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........NORTH WINDS 6 TO 8 MPH EARLY IN THE MORNING
BECOMING LIGHT.
MIXING HEIGHT.......400 FT AGL IN THE MORNING RISING TO 1300 FT.
TRANSPORT WINDS.....NORTHEAST 3 TO 5 MPH SHIFTING TO THE SOUTHEAST
2 TO 5 MPH IN THE LATE MORNING AND EARLY
AFTERNOON, THEN SHIFTING TO THE NORTHEAST
AROUND 5 MPH LATE IN THE AFTERNOON.
VENTILATION RATE....POOR (251-737 M^2/S).
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 (%).........76 70 70 70 54 54 54 49 49 49 48 48
WEATHER COV.....
WEATHER TYPE....
CWR.............0 0 0 0 0 0 0 0 0 0 M M
CHC OF PCPN (%).10 0 0 0 0 0 0 10 10 10 10 10
TEMP............13 13 16 21 26 32 36 40 42 43 44 43
RH..............92 92 91 90 85 63 48 37 36 36 36 39
20 FT WIND DIR..N N N N S S S S S S SW SW
20 FT WIND SPD..7 6 6 6 2 2 2 3 3 3 3 3
20 FT WIND GUST. 5 5 5 5 5
MIX HGT (KFT)...0.4 0.4 0.4 0.4 1.1 1.1 1.1 1.1 1.1 1.1 1.3 1.3
TRANSP WIND DIR.NE NE NE NE S S S SE SE SE NE NE
TRANSP WIND SPD.5 3 3 3 2 2 2 5 5 5 5 5
VENT (M^2/S)....251 251 251 251 564 564 564 564 564 564 737 737
FORECASTER...MARKLE
REQUESTED BY...JUSTIN STRAMER-SMITH
TYPE OF REQUEST...PRESCRIBED
.TAG 2608964.0/AER
.DELDT 04/04/26
.FORMATTERVERSION 2.0.0
.EMAIL JUSTIN_STRAMER-SMITH@NPS.GOV
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