156
FNUS76 KSGX 121318
FWSSGX

Spot Forecast for Observatory Unit 1...USFS
National Weather Service San Diego CA
518 AM PST Wed Feb 12 2025

Forecast is based on ignition time of 0600 PST on February 12.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...
It will be cold with high humidity as precipitation gradually
increases today, starting out as snow or a rain/snow mix, then
changing to rain by late morning. Rain will continue through Friday,
changing back to snow late Friday. Southwest winds and
temperature to increase Thursday. Strong westerly winds Friday
will turn northwest and diminish Friday night as showers end. Dry
and warmer Saturday and Sunday with weak winds.

.TODAY...

Sky/weather.........Cloudy (85-95 percent). Areas of fog early in
                    the morning. Snow likely early in the morning.
                    Rain likely early in the morning, then rain in
                    the late morning and afternoon.
Max temperature.....Around 42.
Min humidity........72 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 8 to 9 mph. Gusts up to 16 mph.
CWR.................70 percent increasing to 93 percent in the late
                    morning and afternoon.
Mixing height.......400 ft AGL.
Transport winds.....Southwest 7 to 14 mph.

TIME (PST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........80  85  85  85  100 100 100 100 100 100 100 100
Weather cov.....LKY LKY LKY LKY DEF DEF DEF DEF DEF DEF DEF DEF
Weather type....SN  RS  RS  RS  RN  RN  RN  RN  RN  RN  RN  RN
Tstm cov........
Temp............35  35  37  38  38  39  39  39  39  40  37  37
RH..............76  76  75  74  76  77  78  81  83  80  91  88
20 FT wind dir..SW  W   SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..9   9   8   8   8   8   8   9   9   9   9   9
20 FT wind gust.16  15  14  14  13  13  13  15  15  16  15  15
CWR.............70  70  70  70  90  90  90  90  90  90  90  90

.TONIGHT...

Sky/weather.........Cloudy (95-100 percent). Rain through the
                    night. Areas of fog in the late evening and
                    overnight.
Min temperature.....Around 36.
Max humidity........91 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 8 to 9 mph. Gusts around 15 mph.
CWR.................86 percent increasing to 100 percent in the
                    late evening and overnight.
Mixing height.......200 ft AGL.
Transport winds.....South 12 to 15 mph.

TIME (PST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........100 100 100 100 100 100 100 100 100 100 100 100
Weather cov.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF
Weather type....RN  RN  RN  RN  RN  RN  RN  RN  RN  RN  RN  RN
Tstm cov........
Temp............37  39  39  40  40  38  41  41  41  42  43  42
RH..............82  74  74  74  75  80  73  72  72  70  70  72
20 FT wind dir..SW  S   S   S   S   S   SW  SW  SW  S   S   S
20 FT wind spd..9   8   8   8   8   8   8   9   8   8   8   8
20 FT wind gust.15  15  14  13  13  14  15  15  15  14  14  14
CWR.............90  90  90  90  100 100 100 100 100 100 100 100

.THURSDAY...

Sky/weather.........Cloudy (95-100 percent). Areas of fog early in
                    the morning. Rain through the day. Slight
                    chance of thunderstorms late in the afternoon.
Max temperature.....Around 45.
Min humidity........70 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 9 to 15 mph. Gusts up to 15 mph
                    increasing to 23 mph late in the afternoon.
                    Gusty and erratic winds expected near
                    thunderstorms late in the afternoon.
CWR.................100 percent.
Mixing height.......600 ft AGL.
Transport winds.....South 16 to 25 mph shifting to the southwest 26
                    to 28 mph late in the afternoon.

TIME (PST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........100 100 100 100 100 100 100 100 100 100 100 100
Weather cov.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF
Weather type....RN  RN  RN  RN  RN  RN  RN  RN  RN  RN  RN  RN
Tstm cov........                                        SCH SCH
Temp............42  43  44  45  45  45  45  44  43  42  41  42
RH..............72  70  71  74  79  82  84  87  91  94  95  89
20 FT wind dir..S   S   S   S   S   SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..9   9   10  10  10  12  12  13  13  14  14  15
20 FT wind gust.15  15  16  17  18  18  20  20  21  22  22  23
CWR.............100 100 100 100 100 100 100 100 100 100 100 100

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Rain. Areas of fog. Showers with possible snow showers late, gradually
ending. Lows in the lower 40s. Highs in the mid 40s. Southwest winds
around 13 mph.
.SATURDAY...
Partly cloudy. Lows in the upper 30s. Highs in the mid 50s. Light winds.
.SUNDAY...
Partly cloudy. Lows in the lower 40s. Highs in the upper 50s. Light
winds.

$$
Forecaster...MIGUEL MILLER
Requested by...Dana Barre
Type of request...PRESCRIBED
.TAG 2502578.3/SGX
.DELDT 02/12/25
.FormatterVersion 2.0.0
.EMAIL dana.barre@usda.gov,sm.fs.cnfecc@usda.gov,jason.mcahren@usda.gov