527
FNUS76 KPQR 131207
FWSPQR

Spot Forecast for High Lava IAP...USFS
National Weather Service Portland OR
507 AM PDT Thu Aug 13 2026

Forecast is based on forecast start time of 0600 PDT on August 13.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Warm and dry conditions persist with predominately
onshore flow. Winds briefly turn easterly this morning before
shifting back to the northwest this afternoon. Onshore flow will
support elevated RHs with good overnight humidity recoveries.
Subsidence inversion expected overnight around 500 ft with
increased mixing after 1000 in the morning. A 5% chance for
thunderstorms this afternoon increases to around 10% on Friday
afternoon.

.TODAY...

Sky/weather.........Partly cloudy then becoming mostly sunny.
                    Areas of smoke in the afternoon.
CWR.................1 percent.
Chance of lightning.5 percent.
Max temperature.....Around 74.
Min humidity........50-54 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming northwest around 5 mph
                    late in the afternoon.
 Ridgetop...........Light and variable winds becoming northwest
                    6 to 8 mph with gusts up to 15 mph late in
                    the afternoon.
Mixing height.......4400 ft AGL.
Transport winds.....Northeast around 3 mph early in the morning,
                    then shifting to the east 3 to 6 mph in the
                    late morning and early afternoon shifting to
                    the northwest 7 to 8 mph late in the afternoon.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........30  26  17  14  10  11  12  20  34  27  12  13
Weather cov.....PTY PTY PTY PTY PTY PTY PTY ARS ARS ARS ARS ARS
Weather type....SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of ltng (%).0   0   0   0   0   0   0   10  10  10  10  0
Temp............56  52  50  55  58  61  65  69  72  72  73  72
RH..............79  88  93  87  81  70  62  56  53  52  52  54
20 FT wind dir..NE  E   E   E   SE  SE  SE  SW  W   W   NW  NW
20 FT wind spd..2   2   2   2   2   3   3   3   4   4   4   5
20 FT wind gust.6   6   5   5   6   6   6   7   8   10  10  10
Ridge wind dir..NW  N   NE  E   E   E   E   E   E   NW  NW  NW
Ridge wind spd..3   3   3   3   3   3   3   4   5   6   6   8
Mix hgt (kft)...0.3 0.3 0.5 0.9 1.5 2.7 3.4 4.3 4.2 4.4 4.1 3.4
Transp wind dir.NW  N   NE  E   E   SE  E   E   E   NW  N   N
Transp wind spd.5   3   3   3   5   3   3   5   6   7   7   8

.TONIGHT...

Sky/weather.........Partly cloudy. Areas of smoke.
CWR.................2 percent.
Chance of lightning.5 percent.
Min temperature.....Around 54.
Max humidity........87-90 percent.
Wind (20 ft)........
 Slope/valley.......North winds around 5 mph early in the evening
                    becoming light.
 Ridgetop...........North winds 6 to 8 mph with gusts up to 15 mph
                    in the evening becoming light.
Mixing height.......200 ft AGL.
Transport winds.....North 5 to 9 mph shifting to the east around 3
                    mph overnight, then shifting to the southwest
                    around 5 mph overnight.

TIME (PDT)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........10        10        15        23
Weather cov.....AREAS     PATCHY    PATCHY    PATCHY
Weather type....SMOKE     SMOKE     SMOKE     SMOKE
Tstm cov........
CWR.............0         0         0         0
Chc of ltng (%).0         0         0         0
Temp............72        65        64        62
RH..............55        70        68        70
20 FT wind......NW 5G10   N 4G8     NE 3G7    NW 3G6
Ridgetop wind...NW 8G15   N 5G10    NE 4G8    W 4G7
Mix hgt (ft)....2700      300       200       200
Transport wind..N 9       N 6       NE 5      SW 5

.FRIDAY...

Sky/weather.........Partly cloudy then becoming mostly sunny.
                    Patchy smoke.
CWR.................2 percent.
Chance of lightning.10 percent.
Max temperature.....Around 73.
Min humidity........50-54 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming west 5 to 6 mph late in
                    the afternoon.
 Ridgetop...........Southwest winds 6 to 8 mph with gusts up to 15
                    mph in the afternoon.
Mixing height.......4800 ft AGL.
Transport winds.....South 5 to 9 mph shifting to the west around 8
                    mph late in the afternoon.

TIME (PDT)      6 AM         10 AM        2 PM
Sky (%).........36           46           14
Weather cov.....PATCHY
Weather type....SMOKE        NONE         NONE
Tstm cov........
CWR.............0            0            0
Chc of ltng (%).0            0            10
Temp............59           59           71
RH..............74           81           56
20 FT wind......SE 3G6       S 3G6        W 5G10
Ridgetop wind...SW 4G7       SW 4G7       SW 6G12
Mix hgt (ft)....300          1700         4800
Transport wind..S 5          S 5          SW 7

$$
Forecaster...Hartsock
Requested by...Andrew Myhra
Type of request...WILDFIRE
.TAG 2618852.17/PQR
.DELDT 08/13/26
.FormatterVersion 2.0.0
.EMAIL andrew.myhra@usda.gov,jody_nickerson-powell@firenet.gov