892
FNUS76 KSTO 110356
FWSSTO

Spot Forecast for Gregory Pile Burn...USFS
National Weather Service Sacramento CA
856 PM PDT Mon Mar 10 2025

Forecast is based on ignition time of 0600 PDT on March 11.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Dry conditions prevail through most of Tuesday. An approaching
storm will bring a southerly breeze on Tuesday afternoon that will
increase Tuesday night and Wednesday as the storm pushes inland.
Showers will start developing in the area after 1700 Tuesday, and
then steadier rain will move in overnight and on Wednesday. Through
Wednesday evening, 2-2.5" rain is forecast with additional
precipitation the rest of the week and over the weekend
and into next week as active weather continues.
There is a 10% chance for thunderstorms on Wednesday,
and that will increase to 15% on Thursday.

.TUESDAY...

Sky/weather.........Increasing clouds. Rain showers after 1700.
Max temperature.....61-65.
Min humidity........44-48 percent.
Wind (20 ft)........
 Slope/valley.......Light winds in the morning becoming south at
5 to 10 mph with gusts 15 to 25 mph after 1100.
Mixing height.......Increasing to 5400 ft AGL.
Transport winds.....North 2 to 6 mph increasing to south 12 to 16
                    mph late in the morning.
CWR.................0 percent increasing to 65 percent late in the
                    afternoon.
Chance of thunder...0 percent.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MCR MCR MCR MCR MCR MCR MCR MCR PC  PC  MC  MC
Weather cov.....                                        SCH LKY
Weather type....                                        RW  RW
CWR.............0   0   0   0   0   0   0   0   0   0   0   70
Temp............44  44  42  45  51  55  58  60  61  62  63  62
RH..............71  71  73  71  64  57  52  48  46  45  45  47
20 FT wind dir..N   N   N   N   W   S   S   S   S   S   S   S
20 FT wind spd..2   2   2   2   2   5   5   5   9   9   9   10
20 FT wind gust.7   7   7   7   7   14  14  14  22  22  22  24
Mix hgt (kft)...1.4 1.4 1.7 1.7 1.7 4.3 4.3 4.3 5.4 5.4 5.4 2.5
Transp wind dir.N   N   N   N   N   S   S   S   S   S   S   S
Transp wind spd.6   6   2   2   2   12  12  12  16  16  16  15

.TUESDAY NIGHT...

Sky/weather.........Cloudy. Rain.
Min temperature.....42-46.
Max humidity........94-98 percent.
Wind (20 ft)........
 Slope/valley.......South winds 8 to 12 mph with gusts 20 to 30 mph.
Mixing height.......Decreasing to 1500 ft AGL.
Transport winds.....South 14 to 16 mph.
CWR.................100 percent.
Chance of thunder...0 percent.

TIME (PDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky cover.......MC  MC  CDY CDY CDY CDY CDY CDY CDY CDY CDY CDY
Weather cov.....LKY LKY LKY LKY LKY DEF DEF DEF DEF DEF DEF DEF
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
CWR.............70  70  70  70  70  100 100 100 100 100 100 100
Temp............61  59  56  55  54  52  51  49  48  47  46  46
RH..............50  55  61  66  72  78  82  85  88  91  93  94
20 FT wind dir..S   S   S   S   S   S   S   S   S   S   S   S
20 FT wind spd..10  10  10  10  10  12  12  12  10  10  10  9
20 FT wind gust.24  24  23  23  23  32  32  32  25  25  25  25
Mix hgt (kft)...2.5 2.5 1.5 1.5 1.5 1.7 1.7 1.7 2.3 2.3 2.3 2.0
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.15  15  14  14  14  16  16  16  15  15  15  14

.WEDNESDAY...

Sky/weather.........Cloudy. Rain.
Max temperature.....47-51.
Min humidity........72-76 percent.
Wind (20 ft)........
 Slope/valley.......South winds 8 to 12 mph with gusts 20 to 30 mph.
Mixing height.......Increasing to 2900 ft AGL.
Transport winds.....South 13 to 18 mph.
CWR.................100 percent.
Chance of thunder...10 percent.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......CDY CDY CDY CDY CDY CDY CDY CDY CDY CDY CDY CDY
Weather cov.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
CWR.............100 100 100 100 100 100 100 100 100 100 100 100
Temp............45  45  45  45  45  45  46  47  47  48  49  49
RH..............95  95  95  96  97  97  94  90  86  81  77  74
20 FT wind dir..S   S   S   S   S   S   S   S   S   S   S   S
20 FT wind spd..9   9   9   9   10  10  11  12  12  12  12  8
20 FT wind gust.25  25  28  28  28  29  29  29  28  28  28  23
Mix hgt (kft)...2.0 2.0 2.4 2.4 2.4 2.8 2.8 2.8 2.9 2.9 2.9 2.6
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.14  14  15  15  15  16  16  16  18  18  18  13

$$
Forecaster...KH
Requested by...Nick Price
Type of request...PRESCRIBED
.TAG 2505192.0/STO
.DELDT 03/10/25
.FormatterVersion 2.0.0
.EMAIL nicholas.price@usda.gov,justin.regelin@usda.gov