862
FNUS76 KPQR 052256
FWSPQR

Spot Forecast for High Lava Fire...USFS
National Weather Service Portland OR
356 PM PDT Sat Sep 5 2026

Forecast is based on forecast start time of 1500 PDT on September 06.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Conditions will remain cool and moist through the
remainder of the weekend with occasional rain showers. There is also
a 15-25% chance for a brief thunderstorm through the rest of this
afternoon. If a thunderstorm does move over the burn area, brief
heavy rain, gusty and erratic outflow winds, small hail, and a few
flashes of lightning would be expected. It appears rain will become
more steady Sunday morning with chances for at least 0.25 inches of rain
falling within a 12 hour period increasing to near 20%. Trending
drier Monday through Wednesday with temperatures warming each day
as winds become easterly.


.TONIGHT...

Sky/weather.........Partly to mostly cloudy. Slight chance of rain
showers.
CWR.................10 percent.
Chance of lightning.10 percent.
Min temperature.....Around 49.
Max humidity........83 percent.
Wind (20 ft)........
 Slope/valley.......Light winds.
 Ridgetop...........Light and variable winds less than 5 mph.
Mixing height.......300 ft AGL.
Transport winds.....North 5 to 6 mph shifting to the southwest
                    around 5 mph overnight, then shifting to the
                    southeast 5 to 7 mph overnight.

TIME (PDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........28  27  39  54  68  69  67  59  75  71  71  75
Weather cov.....SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH CHC CHC
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........
CWR.............10  5   3   2   1   1   1   1   1   1   10  10
Chc of ltng (%).10  10  5   1   1   1   0   0   0   0   0   0
Temp............61  59  54  52  51  51  51  51  51  51  51  51
RH..............73  74  79  83  83  83  82  81  80  78  78  76
20 FT wind dir..N   N   NW  N   N   NE  N   NW  N   N   N   E
20 FT wind spd..0   0   2   3   3   4   4   3   2   2   2   2
20 FT wind gust.5   4   6   7   8   10  10  8   7   6   6   6
Ridge wind dir..N   N   NW  N   N   N   N   N   N   N   N   NE
Ridge wind spd..3   3   3   3   3   4   4   3   3   3   3   3
Mix hgt (kft)...2.2 1.0 0.4 0.5 0.4 0.3 0.4 0.3 0.3 0.3 0.3 0.3
Transp wind dir.N   N   N   N   N   NE  NE  SW  SE  SE  E   NE
Transp wind spd.5   5   6   6   6   5   5   5   6   7   5   5
12 Hour Rainfall....Trace to 0.10 inches.


.SUNDAY...

Sky/weather.........Mostly cloudy. Chance of rain showers through
the day.
CWR.................15-20 percent.
Chance of lightning.14 percent.
Max temperature.....Around 63.
Min humidity........Around 75 percent.
Wind (20 ft)........
 Slope/valley.......Light winds.
 Ridgetop...........Light and variable winds less than 5 mph, becoming
northwest 6-8 mph in the afternoon.
Mixing height.......2400 ft AGL.
Transport winds.....North 5 to 10 mph.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........78  84  57  58  69  73  81  68  87  83  75  67
Weather cov.....CHC CHC CHC SCH SCH CHC CHC CHC CHC CHC CHC CHC
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........
CWR.............15  20  20  20  20  20  15  15  15  15  15  15
Chc of ltng (%).0   0   0   0   0   10  10  10  10  10  10  10
Temp............50  49  50  52  56  58  59  60  61  60  60  61
RH..............82  83  83  83  79  73  75  74  77  81  82  82
20 FT wind dir..NE  NW  N   N   N   N   NW  NW  NW  NW  NW  NW
20 FT wind spd..1   1   2   0   0   0   1   1   2   2   2   2
20 FT wind gust.6   5   6   4   4   4   4   5   6   6   6   6
Ridge wind dir..E   NE  N   N   NW  NW  NW  NW  NW  NW  NW  NW
Ridge wind spd..3   3   3   3   5   5   5   6   6   7   7   8
Mix hgt (kft)...0.3 0.3 0.4 0.7 1.1 2.0 2.4 2.2 2.4 1.8 1.9 1.5
Transp wind dir.N   NW  N   NW  N   NE  NE  NE  N   N   NW  NW
Transp wind spd.6   7   6   6   5   5   6   6   7   7   8   8
12 Hour Rainfall....0.10-0.15 inches.


.SUNDAY NIGHT...

Sky/weather.........Partly cloudy then becoming mostly cloudy.
                    Slight chance of rain showers in the evening.
CWR.................9 percent.
Chance of lightning.8 percent.
Min temperature.....Around 48.
Max humidity........97 percent.
Wind (20 ft)........
 Slope/valley.......Light winds.
 Ridgetop...........Light and variable winds less than 5 mph.
Mixing height.......300 ft AGL.
Transport winds.....West around 9 mph.
12 Hour Rainfall....Trace.


.MONDAY...

Sky/weather.........Partly sunny then becoming partly cloudy.
CWR.................5 percent.
Chance of lightning.3 percent.
Max temperature.....Around 61.
Min humidity........73 percent.
Wind (20 ft)........
 Slope/valley.......West winds around 5 mph.
 Ridgetop...........West winds 6 to 8 mph.
Mixing height.......3600 ft AGL.
Transport winds.....West around 10 mph.
12 Hour Rainfall....0.


.MONDAY NIGHT...
Mostly clear. Lows in the lower 40s. Light winds.
12 Hour Rainfall....0.

$$
Forecaster...Kranz
Requested by...Kristin Kolanoski
Type of request...WILDFIRE
.TAG 2621171.1/PQR
.DELDT 09/05/26
.FormatterVersion 2.0.0
.EMAIL kristin_kolanoski@firenet.gov