075
FNAK79 PAFG 051331
FWSAFG
SPOT FORECAST FOR NENANA RIDGE COMPLEX...IMT - GEORGIA FORESTRY COMMISSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
531 AM AKDT SAT JUL 5 2025
FORECAST IS BASED ON FORECAST START TIME OF 0600 AKDT ON JULY 05.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
THANKS AGAIN FOR THE OBSERVATIONS FRIDAY, THEY WERE VERY HELPFUL.
WATCHING WEATHER THROUGH EARLY SATURDAY MORNING HIGHLIGHTS THE
DRY EASTERLY FLOW ABOVE A SHALLOW SURFACE INVERSION. WHILE NENANA
AIRPORT IS SEEING LIGHT GROUND FOG, SITES ALONG PARK HIGHWAY ARE
REPORTING 70F TEMPS, RH OF 33 PERCENT, AND NORTHEAST WINDS NEAR 5
TO 8 MPH. THIS MORNINGS WEATHER BALLOON DATA PAINTS THIS PICTURE
CLEARLY, WITH 25 KNOTS OF DRY EAST WIND AT 2000FT. THIS IS ALSO
PUSHING SMOKE WEST OUT OF THE AREA.
SATURDAY WE ARE STILL HIGHLIGHTING HOT AND DRY CONDITIONS, WITH
AN EASTERLY WIND COMPONENT. THE SURFACE INVERSION WILL BREAK
SOONER, LIKELY NEAR 9AM, WITH WINDS PICKING UP THROUGH THE
AFTERNOON, LIKELY GUSTING 15 MPH ALONG THE RIDGES. TEMPS WILL
REACH THE MID TO UPPER 80S, WITH RH DROPPING INTO THE LOW 20S.
SATURDAY NIGHT A RIDGE WILL BEGIN TO BREAK DOWN ACROSS THE STATE, WHICH
WILL BRING SOUTHERLY WINDS TO THE INTERIOR. EXPECTING SURFACE
WINDS TO BEGIN TO TURN TO THE SOUTH-SOUTHWEST NEAR 1AM SUNDAY.
CONDITIONS FAVORABLE FOR SLOW MOVING THUNDERSTORMS WILL ALSO BE
PRESENT SUNDAY INTO MONDAY, WITH HIGHER CONFIDENCE OVER THE ALASKA
RANGE AND NORTH INTO THE WHITE MOUNTAINS. KEEP A SHARP LOOKOUT
FOR VIRGA AND GUSTY/ERRATIC WINDS.
TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT). AREAS OF SMOKE.
CWR.................0 PERCENT.
TSTM COVERAGE.......NONE.
MAX TEMPERATURE.....AROUND 85.
MIN HUMIDITY........23 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 7 MPH.
RIDGETOP WIND.......EAST-NORTHEAST 10 GUST 15 MPH
MIXING HEIGHT.......800 FT AGL INCREASING TO 8500 FT AGL.
TRANSPORT WINDS.....EAST AROUND 14 MPH.
INVERSION BURNOFF...NEAR 9AM.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT). AREAS OF SMOKE.
CWR.................0 PERCENT.
TSTM COVERAGE.......NONE.
MIN TEMPERATURE.....AROUND 58.
MAX HUMIDITY........65 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 8 MPH.
RIDGETOP WIND.......SOUTH-SOUTHWEST 8 TO 12 MPH.
MIXING HEIGHT.......8500 FT AGL DECREASING TO 700 FT AGL IN THE
LATE EVENING AND OVERNIGHT.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.
INVERSION SETUP.....NEAR MIDNIGHT.
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). AREAS OF SMOKE.
CWR.................10 PERCENT.
TSTM COVERAGE.......ISOLATED.
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........37 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 8 MPH.
RIDGETOP WIND.......SOUTHWEST WINDS 10 GUST 15 MPH.
MIXING HEIGHT.......1300 FT AGL INCREASING TO 6100 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
INVERSION BURNOFF...NEAR 9AM.
FORECASTER...PARK
REQUESTED BY...RACHEL FONVIELLE, PSC3(T)
TYPE OF REQUEST...WILDFIRE
.TAG 2517228.4/AFG
.DELDT 07/05/25
.FORMATTERVERSION 2.0.0
.EMAIL RACHEL_FONVIELLE@FIRENET.GOV
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