859
FNUS76 KPQR 211226
FWSPQR

Spot Forecast for High Lava IAP...USFS
National Weather Service Portland OR
526 AM PDT Fri Aug 21 2026

Forecast is based on forecast start time of 0600 PDT on August 21.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Winds shift to the south/southwest today.
Stronger onshore flow will bring cooler temperatures and higher
humidity into the weekend. 10-25% chance for light rain showers
and isolated thunderstorms in the evening and into early Saturday
morning, with gusty and erratic winds possible near storms.

.TODAY...

Sky/weather.........Mostly cloudy. Patchy smoke through the day.
CWR.................3 percent.
Chance of lightning.9 percent.
Max temperature.....Around 77.
Min humidity........48 percent.
Wind (20 ft)........
 Slope/valley.......Light winds.
 Ridgetop...........Light winds becoming southerly in the afternoon
4 to 7 mph.
Mixing height.......1500 ft AGL.
Transport winds.....North around 3 mph shifting to the east early
                    in the morning, then shifting to the southwest
                    5 to 6 mph early in the afternoon shifting to
                    the west 6 to 7 mph late in the afternoon.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........68  70  75  70  83  78  81  88  92  93  91  90
Weather cov.....PTY PTY                         PTY PTY PTY ARS
Weather type....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   0   0   0   0   10
Temp............66  64  62  65  66  68  71  74  75  75  75  73
RH..............51  54  58  56  57  55  52  49  48  50  53  56
20 FT wind dir..E   NE  E   SE  SE  SE  SE  S   S   SW  SW  SW
20 FT wind spd..3   3   4   3   3   3   3   4   4   4   4   3
20 FT wind gust.6   6   7   6   6   6   6   6   8   8   8   8
Ridge wind dir..E   E   E   SE  SE  SE  S   S   SW  SW  SW  SW
Ridge wind spd..3   3   3   3   3   4   4   5   5   6   7   7
Mix hgt (kft)...0.3 0.3 0.3 0.5 0.7 1.3 1.3 1.5 1.5 1.4 1.2 1.0
Transp wind dir.N   N   E   E   E   SE  E   S   SW  SW  W   W
Transp wind spd.3   3   5   5   7   8   6   5   6   6   7   6

.TONIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Areas of smoke in the evening. Slight chance of
                    showers and thunderstorms in the late evening
                    and overnight.
CWR.................3 percent.
Chance of lightning.23 percent.
Min temperature.....Around 50.
Max humidity........98 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming west 5 to 7 mph overnight.
                    Gusty and erratic winds expected near
                    thunderstorms in the late evening and
                    overnight.
 Ridgetop...........
Mixing height.......300 ft AGL.
Transport winds.....West 6 to 9 mph.

TIME (PDT)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........91        97        84        50
Weather cov.....AREAS     S CHC     S CHC     S CHC
Weather type....SMOKE     RNSHWR    RNSHWR    RNSHWR
Tstm cov........          S CHC     S CHC     S CHC
CWR.............0         0         0         0
Chc of ltng (%).10        20        20        20
Temp............72        67        68        64
RH..............59        68        68        76
20 FT wind......W 3G8     W 3G6     W 5G10    W 6G11
Ridgetop wind...SW 5G10   W 4G8     W 5G10    W 6G11
Mix hgt (ft)....900       300       300       500
Transport wind..W 7       W 6       W 7       W 9

.SATURDAY...

Sky/weather.........Partly sunny then becoming partly cloudy then
                    becoming mostly sunny then becoming partly
                    cloudy.
CWR.................3 percent.
Chance of lightning.14 percent.
Max temperature.....Around 66.
Min humidity........59 percent.
Wind (20 ft)........
 Slope/valley.......West winds 6 to 7 mph. Gusts up to 20 mph late
                    in the afternoon.
 Ridgetop...........
Mixing height.......4300 ft AGL.
Transport winds.....West 8 to 14 mph.

TIME (PDT)      6 AM         10 AM        2 PM
Sky (%).........58           34           24
Weather cov.....
Weather type....NONE         NONE         NONE
Tstm cov........
CWR.............0            0            0
Chc of ltng (%).10           0            0
Temp............57           52           64
RH..............81           97           66
20 FT wind......W 7G13       W 7G14       W 7G16
Ridgetop wind...W 7G13       W 7G14       W 7G16
Mix hgt (ft)....400          1700         3100
Transport wind..W 9          W 9          W 12

$$
Forecaster...Batz
Requested by...Scott Koehler
Type of request...WILDFIRE
.TAG 2618852.33/PQR
.DELDT 08/21/26
.FormatterVersion 2.0.0
.EMAIL Scott_Koehler@firenet.gov