998
FNUS76 KSGX 011247
FWSSGX

Spot Forecast for Corona Pile Burn...US Forest Service
National Weather Service San Diego CA
447 AM PST Mon Dec 1 2025

Forecast is based on ignition time of 0630 PST on December 01.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...
Offshore flow will bring gusty east winds today, peaking around
midday, gradually diminishing late afternoon and evening. Humidity
will drop quickly during this time. Lighter winds tonight into
Tuesday, with poor humidity recovery. Wind flow turning weakly
onshore Tuesday afternoon. That`s when humidity will increase
noticeably as the marine layer expands. Next offshore winds
Wednesday late morning through Friday, strongest period Wednesday
through Wednesday night.

.TODAY...

Sky/weather.........Mostly sunny (10-20 percent).
Max temperature.....Around 71.
Min humidity........17 percent.
Eye level winds.....Southeast winds around 4 mph shifting to the
                    northeast 5 to 9 mph with gusts to around 14
                    mph late in the morning.
Wind (20 ft)........
 Slope/valley.......South winds around 5 mph shifting to the
                    northeast 7 to 12 mph with gusts to around 20
                    mph in the late morning and afternoon.
 Ridgetop...........Northeast 15 to 20 mph.
CWR.................0 percent.
Mixing height.......4000 ft AGL.
Transport winds.....Northeast 6 to 15 mph increasing to 13 to 16
                    mph late in the afternoon.

TIME (PST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........17  14  14  14  9   9   9   17  17  17  16  16
Weather cov.....
Weather type....
Tstm cov........
Temp............48  49  51  58  62  66  68  70  71  70  69  66
RH..............67  61  51  37  30  24  21  18  17  17  17  19
20 FT wind dir..S   SE  E   NE  NE  NE  NE  NE  NE  NE  NE  NE
20 FT wind spd..5   6   6   7   10  12  12  12  12  12  10  7
20 FT wind gust.10  10  11  13  16  18  20  18  18  18  18  12
Eye lvl wnd dir.S   SE  E   NE  NE  NE  NE  NE  NE  NE  NE  NE
Eye lvl wnd spd.4   4   4   5   7   9   9   8   8   8   7   5
Eye lvl wnd gst.7   7   8   9   12  13  14  13  13  13  13  9
Ridge wind dir..E   E   E   E   NE  E   E   NE  NE  NE  NE  NE
Ridge wind spd..20  15  20  15  15  20  15  15  15  15  15  15
CWR.............0   0   0   0   0   0   0   0   0   0   0   0

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
Min temperature.....Around 45.
Max humidity........33 percent.
Eye level winds.....Southeast winds around 4 mph becoming light.
Wind (20 ft)........
 Slope/valley.......Southeast winds 5 to 6 mph in the evening and
                    overnight becoming light.
 Ridgetop...........East 10 to 15 mph shifting to the northeast 5
                    to 10 mph overnight.
CWR.................0 percent.
Mixing height.......300 ft AGL.
Transport winds.....East 8 to 10 mph shifting to the southeast 3 to
                    8 mph overnight.

TIME (PST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........16  21  21  21  24  24  24  7   7   7   11  11
Weather cov.....
Weather type....
Tstm cov........
Temp............62  59  58  56  54  53  52  51  50  48  47  47
RH..............22  24  25  26  27  28  28  28  29  31  31  32
20 FT wind dir..E   SE  SE  SE  SE  SE  SE  S   S   S   S   S
20 FT wind spd..5   6   6   6   5   5   6   5   5   3   3   3
20 FT wind gust.8   11  11  10  9   9   11  9   8   7   7   7
Eye lvl wnd dir.E   SE  SE  SE  SE  SE  SE  S   S   S   S   S
Eye lvl wnd spd.3   4   4   4   4   4   4   4   3   2   2   2
Eye lvl wnd gst.6   8   8   7   7   7   8   7   6   5   5   5
Ridge wind dir..E   E   E   E   E   E   E   E   NE  NE  NE  NE
Ridge wind spd..15  10  10  10  10  10  10  5   10  10  5   5
CWR.............0   0   0   0   0   0   0   0   0   0   0   0

.TUESDAY...

Sky/weather.........Mostly sunny (15-25 percent).
Max temperature.....Around 70.
Min humidity........17 percent.
Eye level winds.....Light winds becoming west up to 6 mph late in
                    the afternoon.
Wind (20 ft)........
 Slope/valley.......Light winds becoming southeast around 5 mph
                    early in the morning, then becoming light in
                    the late morning and early afternoon becoming
                    west 7 to 8 mph late in the afternoon.
 Ridgetop...........Northeast around 5 mph shifting to the
                    northwest in the late morning and afternoon.
CWR.................0 percent.
Mixing height.......2900 ft AGL.
Transport winds.....Southeast 2 to 3 mph shifting to the northeast
                    late in the morning, then shifting to the west
                    3 to 10 mph in the afternoon.

TIME (PST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11  21  21  21  19  19  19  17  17  17  25  25
Weather cov.....
Weather type....
Tstm cov........
Temp............46  47  50  54  62  66  69  70  70  69  67  64
RH..............33  32  30  27  21  18  17  18  22  31  42  51
20 FT wind dir..SE  SE  SE  SE  E   NW  NW  W   W   W   W   W
20 FT wind spd..3   3   5   2   1   1   1   3   7   8   8   7
20 FT wind gust.6   8   9   6   4       4   8   12  13  13  12
Eye lvl wnd dir.SE  SE  SE  SE  E   NW  NW  W   W   W   W   W
Eye lvl wnd spd.2   3   3   2   1   1   1   3   5   5   6   4
Eye lvl wnd gst.5   6   7   5   3       3   6   9   9   9   9
Ridge wind dir..NE  N   NE  N   N   NW  NW  W   W   NW  NW  W
Ridge wind spd..5   5   5   5   5   5   5   5   5   5   5   5
CWR.............0   0   0   0   0   0   0   0   0   0   0   0

$$
Forecaster...MIGUEL MILLER
Requested by...Gregory Triffet
Type of request...PRESCRIBED
.TAG 2526645.5/SGX
.DELDT 12/01/25
.FormatterVersion 2.0.0
.EMAIL cyrus.galvan@usda.gov,gregory.triffet@usda.gov