Spot Forecast
Issued by NWS Portland, OR

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Spot Forecast for Drano Pile RX...USFS GPF
National Weather Service Portland OR
615 AM PST Tue Nov 18 2025

Forecast is based on ignition time of 0700 PST on November 18.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...A decaying front will bring very light, if any,
rain showers and gusty west winds of around 25 mph through early
this afternoon, with a 40% chance gusts reach 30 mph. Winds will
ease this afternoon, then turn easterly and again become gusty
tonight through Wednesday with a 45% chance gusts reach 35 mph.
There is a 40 to 50% chance of light rain showers late Wednesday
as another weather system approaches from the west.

.TODAY...

Sky/weather.........Partly sunny then becoming partly cloudy.
                    Slight chance of rain showers through early afternoon.
Max temperature.....Around 47.
Min humidity........72 percent.
Wind (20 ft)........
 Slope/valley.......West winds 6 to 10 mph. Gusts up to 21 mph in
                    the morning.
Mixing height.......3400 ft AGL.
Transport winds.....West 9 to 15 mph.

TIME (PST)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........76  74  75  77  67  78  78  77  61  53  47
Weather cov.....    SCH SCH SCH SCH SCH SCH
Weather type....    RW  RW  RW  RW  RW  RW
Tstm cov........
Temp............40  41  41  42  43  44  45  46  47  46  45
RH..............80  82  82  84  80  76  73  69  71  71  74
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..10  9   9   10  10  9   9   8   8   7   6
20 FT wind gust.17  17  16  17  16  16  14  14  13  12  11
Mix hgt (kft)...1.7 1.8 2.2 2.7 3.2 3.4 3.4 3.4 2.5 2.0 1.8
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.13  12  13  14  14  15  15  14  12  12  9

.TONIGHT...

Sky/weather.........Partly cloudy.
Min temperature.....Around 36.
Max humidity........82 percent.
Wind (20 ft)........
 Slope/valley.......West winds 5 to 6 mph shifting to the northwest
                    around 5 mph late in the evening, then shifting
                    to the northeast 5 to 8 mph with gusts to
                    around 16 mph overnight.
Mixing height.......1500 ft AGL.
Transport winds.....West 6 to 8 mph shifting to the northeast
                    around 6 mph late in the evening, then shifting
                    to the east 7 to 12 mph overnight.

TIME (PST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........37  20  18  17  9   7   13  14  13  13  20  20
Weather cov.....
Weather type....
Tstm cov........
Temp............45  44  43  42  41  40  40  39  38  38  38  37
RH..............72  73  75  77  77  78  77  79  82  79  79  80
20 FT wind dir..W   W   W   W   NW  NW  NE  NE  NE  E   E   E
20 FT wind spd..6   6   6   5   5   5   5   6   6   7   8   8
20 FT wind gust.11  10  10  8   10  8   10  10  11  13  16  16
Mix hgt (kft)...1.7 1.6 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
Transp wind dir.W   W   W   W   N   NE  E   E   E   E   E   E
Transp wind spd.8   7   7   6   6   6   6   7   8   9   10  12

.WEDNESDAY...

Sky/weather.........Mostly sunny then becoming partly cloudy.
                    Slight chance of rain late in the afternoon.
Max temperature.....Around 48.
Min humidity........66 percent.
Wind (20 ft)........
 Slope/valley.......East winds 8 to 13 mph with gusts to around 21
                    mph.
Mixing height.......3300 ft AGL.
Transport winds.....East 14 to 20 mph.

TIME (PST)      6 AM         10 AM        2 PM
Sky (%).........20           20           25
Weather cov.....
Weather type....NONE         NONE         NONE
Tstm cov........
Temp............37           40           46
RH..............77           78           66
20 FT wind......E 8G16       E 13G20      E 13G21
Mix hgt (ft)....1500         2400         3000
Transport wind..E 14         E 16         E 18

$$
Forecaster...Bishop/Picard
Requested by...Lauren Clark
Type of request...PRESCRIBED
.TAG 2526133.1/PQR
.DELDT 11/18/25
.FormatterVersion 2.0.0
.EMAIL roland.rose@usda.gov,lauren.clark@usda.gov