547
FNUS76 KSTO 011429
FWSSTO

Spot Forecast for Motherlode Crew Readiness Exercise...CalFire
National Weather Service Sacramento CA
729 AM PDT Fri Aug 1 2025

Forecast is based on ignition time of 0800 PDT on August 06.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Temperatures begin a gradual warming trend by the middle of the
week as dry conditions prevail. Diurnal wind patterns anticipated,
with light east-northeasterly winds late evening and overnight
becoming westerly late morning through the afternoon. Daytime
humidity expected to drop into the low to mid 20s, with overnight
recovery becoming more limited through the end of the week.

.WEDNESDAY...

Sky/weather.........Sunny.
Max temperature.....93-98.
Min humidity........23-28 percent.
Wind (20 ft)........
 Slope/valley.......Light east-northeast winds becoming west-northwest
                    6 to 8 mph late in the morning. Occasional gusts to
                    15 mph through the afternoon.
 Ridgetop...........North around 2 mph shifting to the southwest 7
                    to 9 mph late in the afternoon.
Mixing height.......Rising to near 6100 ft AGL by the afternoon.
Transport winds.....North around 2 mph shifting to the southwest 7
                    to 9 mph late in the afternoon.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      8 AM   10 AM  NOON   2 PM   4 PM
Sky cover.......CLEAR  CLEAR  CLEAR  CLEAR  CLEAR
CWR.............0      0      0      0      0
Chc of thdr (%).0      0      0      0      0
Temp............71     78     85     90     94
RH..............53     45     37     32     27
SL/VL wind......NW 2   NW 2   W 5    W 7    W 7
SL/VL wind gust.5      5      9      13     13
Ridgetop wind...N 2    N 2    W 7    SW 9   SW 9
Mix hgt (ft)....1400   1400   2700   5100   6100
Transport wind..N 2    N 2    W 7    SW 9   SW 9

$$
Forecaster...NR
Requested by...T. Kelly
Type of request...PRESCRIBED
.TAG 2518936.0/STO
.DELDT 08/01/25
.FormatterVersion 2.0.0
.EMAIL tim.kelly@fire.ca.gov