Spot Forecast
Issued by NWS Sacramento, CA

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096
FNUS76 KSTO 171359
FWSSTO

Spot Forecast for PUSD Triangle...CAL FIRE
National Weather Service Sacramento CA
659 AM PDT Thu Apr 17 2025

Forecast is based on ignition time of 0600 PDT on April 18.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Warmer weather is expected on Friday alongside breezy north winds.
A warming and drying trend will then continue through the weekend
and into early next week with periodically breezy winds. Maximum
northerly wind gusts of around 20 mph expected on Friday, decreasing
to around 15 mph on Saturday. More diurnal wind pattern takes shape
later Saturday as well.
&&

.FRIDAY...

Sky/weather.........Sunny.
Max temperature.....66-70.
Min humidity........22-26 percent.
Wind (20 ft)........
 Slope/valley.......Northeast winds 5 to 8 mph shifting to the
                    northwest late in the morning.
 Ridgetop...........Northeast 8 to 12 mph shifting to the northwest
                    around 9 to 12 mph late in the afternoon.
Mixing height.......4500 ft AGL.
Transport winds.....Northeast 8 to 12 mph shifting to the northwest
                    around 9 to 12 mph late in the afternoon.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......CLR 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............49  50  51  55  59  61  63  64  66  67  68  68
RH..............38  36  36  31  28  26  25  26  26  25  24  24
SL/VL wind dir..NE  NE  NE  NE  NE  N   N   N   NW  NW  NW  NW
SL/VL wind spd..6   6   6   6   6   6   6   6   6   6   6   6
SL/VL wind gust.15  15  16  16  16  15  15  15  16  16  16  15
Ridge wind dir..NE  NE  NE  NE  NE  NE  NE  NE  N   N   N   NW
Ridge wind spd..12  12  10  10  10  8   8   8   8   8   8   12
Mix hgt (kft)...0.3 0.3 0.9 0.9 0.9 3.3 3.3 3.3 4.5 4.5 4.5 4.1
Transp wind dir.NE  NE  NE  NE  NE  NE  NE  NE  N   N   N   NW
Transp wind spd.12  12  10  10  10  8   8   8   8   8   8   12

.FRIDAY NIGHT...

Sky/weather.........Clear.
Min temperature.....49-53.
Max humidity........32-36 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 3 to 7 mph shifting to the
                    northeast up to 7 mph early in the evening.
 Ridgetop...........Northwest around 9 to 12 mph shifting to the
                    northeast 6 to 12 mph early in the evening.
Mixing height.......300 ft AGL.
Transport winds.....Northwest around 9 to 12 mph shifting to the
                    northeast 6 to 12 mph early in the evening.
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 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............66  64  61  60  58  57  56  54  53  52  52  52
RH..............27  31  34  34  33  32  32  32  32  32  32  32
SL/VL wind dir..NW  NW  NE  NE  NE  NE  NE  NE  NE  NE  NE  NE
SL/VL wind spd..6   6   5   5   5   6   6   6   6   6   6   6
SL/VL wind gust.15  15  12  12  12  13  13  13  14  14  14  14
Ridge wind dir..NW  NW  N   N   N   NE  NE  NE  NE  NE  NE  NE
Ridge wind spd..12  12  6   6   6   9   9   9   12  12  12  9
Mix hgt (kft)...4.1 4.1 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Transp wind dir.NW  NW  N   N   N   NE  NE  NE  NE  NE  NE  NE
Transp wind spd.12  12  6   6   6   9   9   9   12  12  12  9

.SATURDAY...

Sky/weather.........Sunny.
Max temperature.....66-70.
Min humidity........28-32 percent.
Wind (20 ft)........
 Slope/valley.......Northeast winds up to 6 mph shifting to the
                    southwest late in the morning.
 Ridgetop...........Northeast 7 to 10 mph shifting to the southwest
                    around 4 to 7 mph late in the morning.
Mixing height.......3500 ft AGL.
Transport winds.....Northeast around 7 to 10 mph shifting to the east 8
                    to 11 mph in the morning, then shifting to the
                    southwest around 4 to 7 mph late in the morning.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......CLR CLR CLR CLR CLR CLR CLR CLR MCR MCR MCR 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............52  53  54  57  61  64  65  66  66  67  68  68
RH..............33  34  34  33  31  30  31  33  34  34  33  34
SL/VL wind dir..NE  NE  NE  NE  NE  SW  SW  SW  SW  SW  SW  SW
SL/VL wind spd..6   6   5   5   5   5   5   5   6   6   6   6
SL/VL wind gust.14  14  12  12  12  10  10  10  14  14  14  13
Ridge wind dir..NE  NE  E   E   E   SW  SW  SW  SW  SW  SW  SW
Ridge wind spd..9   9   10  10  10  7   7   7   7   7   7   7
Mix hgt (kft)...0.3 0.3 0.3 0.3 0.3 2.8 2.8 2.8 3.5 3.5 3.5 2.7
Transp wind dir.NE  NE  E   E   E   SW  SW  SW  SW  SW  SW  SW
Transp wind spd.9   9   10  10  10  7   7   7   7   7   7   7

$$
Forecaster...JW
Requested by...Jason Finney
Type of request...PRESCRIBED
.TAG 2510809.0/STO
.DELDT 04/17/25
.FormatterVersion 2.0.0
.EMAIL jason.finney@fire.ca.gov