312
FNUS76 KSTO 061919
FWSSTO

Spot Forecast for Gann...Cal Fire TCU
National Weather Service Sacramento CA
1219 PM PDT Thu Aug 6 2026

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

...HEAT ADVISORY IN EFFECT FROM 10 AM FRIDAY TO 10 PM PDT
SUNDAY...

.DISCUSSION...
Hot, dry, and breezy conditions expected to continue through the
remainder of the week and over the weekend. Winds this afternoon will
be northwesterly with gusts between 15 and 20 mph, then will steadily
decrease in the evening, becoming light and northerly overnight.
A similar trend in the winds is expected for Friday. Daytime humidities
will be primarily in the teens, with poor overnight recoveries. A
Heat Advisory is in effect starting 10am Friday and continuing through
10pm Sunday, due to triple digit highs and little overnight temperature
relief. Hottest conditions on Saturday.

.REST OF TODAY...

Sky/weather.........Sunny. Smoke.
Max temperature.....97-101.
Min humidity........16-20 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 5 to 10 mph with gusts up to
20 mph.
 Ridgetop...........Northwest 9 to 12 mph.
Mixing height.......2900 ft AGL.
Transport winds.....Northwest 9 to 12 mph.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      3PM 4PM 5PM
Sky cover.......CLR CLR CLR
CWR.............0   0   0
Chc of thdr (%).0   0   0
Temp............97  97  98
RH..............21  21  21
SL/VL wind dir..W   W   NW
SL/VL wind spd..9   9   10
SL/VL wind gust.18  18  20
Ridge wind dir..W   W   NW
Ridge wind spd..9   9   12
Mix hgt (kft)...2.9 2.9 2.2
Transp wind dir.W   W   NW
Transp wind spd.9   9   12

.TONIGHT...

Sky/weather.........Mostly clear. Smoke early in the evening, then
                    areas of smoke late in the evening. Patchy
                    smoke in the late evening and overnight.
Min temperature.....66-72.
Max humidity........30-42 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 5 to 9 mph with gusts to around
                    20 mph becoming light and from the north.
 Ridgetop...........Northwest 7 to 10 mph.
Mixing height.......400 ft AGL.
Transport winds.....Northwest 7 to 12 mph.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky cover.......CLR CLR CLR CLR CLR CLR MCR MCR MCR MCR PC  MCR
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............96  94  90  84  81  78  76  74  73  72  71  71
RH..............21  22  24  25  25  28  31  34  35  36  38  39
SL/VL wind dir..NW  NW  NW  NW  N   N   N   N   N   N   N   N
SL/VL wind spd..9   9   8   7   7   6   5   2   1   1   1   1
SL/VL wind gust.20  17  15  14  13  12  10  8   7   6   6   6
Ridge wind dir..NW  W   W   W   W   W   W   W   W   W   W   W
Ridge wind spd..10  9   9   8   8   7   7   7   7   7   7   7
Mix hgt (kft)...2.2 2.2 0.5 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.NW  NW  NW  NW  NW  N   N   N   N   N   N   N
Transp wind spd.12  12  10  10  10  9   9   9   8   8   8   7

.FRIDAY...

Sky/weather.........Sunny. Patchy smoke in the morning, then areas
                    of smoke early in the afternoon. Smoke late in
                    the afternoon.
Max temperature.....96-102.
Min humidity........17-21 percent.
Wind (20 ft)........
 Slope/valley.......Light north winds becoming west up to 9 mph late
in the morning, with gusts up to 20 mph in the
afternoon.
 Ridgetop...........Northwest around 6 mph.
Mixing height.......3100 ft AGL.
Transport winds.....Northwest 6 to 12 mph.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MCR CLR CLR CLR CLR CLR CLR CLR CLR CLR CLR CLR
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............69  70  74  79  88  92  94  96  97  97  99  99
RH..............43  44  38  33  27  23  23  22  21  20  19  19
SL/VL wind dir..N   N   N   NW  W   W   W   W   W   NW  NW  NW
SL/VL wind spd..1   1   2   2   3   5   7   8   8   8   9   8
SL/VL wind gust.6   6   7   8   9   12  14  16  18  18  18  18
Ridge wind dir..N   N   NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Ridge wind spd..6   6   5   5   6   6   6   5   5   6   6   7
Mix hgt (kft)...0.4 0.4 0.9 0.9 0.9 1.8 1.8 1.8 3.1 3.1 3.1 2.6
Transp wind dir.N   N   NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.7   7   6   6   6   8   8   8   12  12  12  10

$$
Forecaster...SP
Requested by...Erin Nanik
Type of request...WILDFIRE
.TAG 2618934.3/STO
.DELDT 08/06/26
.FormatterVersion 2.0.0
.EMAIL erin.nanik@fire.ca.gov