Spot Forecast
Issued by NWS Portland, OR
Issued by NWS Portland, OR
720
FNUS76 KPQR 182040
FWSPQR
Spot Forecast for High Lava IAP...USFS
National Weather Service Portland OR
140 PM PDT Tue Aug 18 2026
Forecast is based on forecast start time of 0700 PDT on August 19.
If conditions become unrepresentative, contact the National Weather
Service.
.DISCUSSION...Warm and dry conditions continue with persistent
west/northwest winds. Moderate to excellent overnight RH recoveries
expected. North/northwest winds become west/southwest on Thursday
and continue through at least Saturday. 5-10% chance for elevated
thunderstorms Thursday through Saturday each evening and overnight.
Exact timing and coverage of thunderstorms remain unclear as
models remain indecisive. However, Friday evening/night has the
highest probability of thunderstorms at this time. Will continue
to monitor as more data becomes available.
.WEDNESDAY...
Sky/weather.........Partly cloudy to mostly sunny. Patchy smoke late in the
afternoon.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 72.
Min humidity........50 percent.
Wind (20 ft)........
Slope/valley.......Light winds becoming west 5 to 8 mph with gusts
to around 17 mph in the late morning and
afternoon.
Ridgetop...........Light winds becoming west 7 to 9 mph with gusts
to around 20 mph in the late morning and
afternoon.
Mixing height.......2000 ft AGL.
Transport winds.....West 7 to 10 mph.
TIME (PDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........25 23 25 27 32 19 24 54 18 14 24
Weather cov..... PTY
Weather type.... SMK
Tstm cov........
CWR.............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
Temp............49 49 52 56 59 64 68 70 71 72 71
RH..............90 90 84 79 69 62 57 52 51 51 50
20 FT wind dir..W NW W W W W W NW W W W
20 FT wind spd..4 4 3 3 4 4 5 5 5 6 5
20 FT wind gust.7 7 7 7 8 8 10 10 10 10 11
Ridge wind dir..W NW W W W W W NW W W W
Ridge wind spd..8 8 8 9 10 10 12 12 13 14 16
Mix hgt (kft)...0.3 0.4 0.7 1.2 1.5 1.9 2.0 2.0 2.0 2.0 1.8
Transp wind dir.W W W W W W W W W W W
Transp wind spd.6 6 5 6 6 6 7 7 7 8 9
.WEDNESDAY NIGHT...
Sky/weather.........Partly cloudy.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....Around 54.
Max humidity........82 percent.
Wind (20 ft)........
Slope/valley.......West winds 5 to 8 mph with gusts to around 17
mph in the evening becoming light overnight.
Ridgetop...........West winds 7 to 9 mph with gusts around 20 mph
in the evening becoming light overnight.
Mixing height.......200 ft AGL.
Transport winds.....Northwest 5 to 8 mph.
TIME (PDT) 6 PM 9 PM MIDNGT 3 AM
Sky (%).........24 50 42 36
Weather cov.....
Weather type....NONE NONE NONE NONE
Tstm cov........
CWR.............0 0 0 0
Chc of ltng (%).0 0 0 0
Temp............70 62 61 59
RH..............55 73 74 75
20 FT wind......W 5G11 W 3G7 NW 2G6 N 3G7
Ridgetop wind...W 7G15 W 5G9 NW 4G7 N 5G9
Mix hgt (ft)....1700 200 200 400
Transport wind..W 8 NW 6 NW 6 NW 6
.THURSDAY...
Sky/weather.........Mostly sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 78.
Min humidity........42 percent.
Wind (20 ft)........
Slope/valley.......Light winds becoming west 4 to 6 mph late in
the afternoon.
Ridgetop...........Light winds becoming west 7 to 10 mph late in
the afternoon.
Mixing height.......2800 ft AGL.
Transport winds.....Northwest 3 to 6 mph shifting to the west 5 to
8 mph in the late morning.
TIME (PDT) 6 AM 10 AM 2 PM
Sky (%).........24 9 8
Weather cov.....
Weather type....NONE NONE NONE
Tstm cov........
CWR.............0 0 0
Chc of ltng (%).0 0 0
Temp............55 62 76
RH..............75 67 44
20 FT wind......N 4G7 NW 3G6 W 5G10
Ridgetop wind...N 5G9 NW 4G7 W 8G12
Mix hgt (ft)....400 1400 2700
Transport wind..N 6 W 5 W 8
$$
Forecaster...Bishop
Requested by...Jody Nickerson-Powell
Type of request...WILDFIRE
.TAG 2618852.28/PQR
.DELDT 08/18/26
.FormatterVersion 2.0.0
.EMAIL jody_nickerson-powell@firenet.gov