209
FNUS76 KSTO 162313
FWSSTO

Spot Forecast for CA-SHF Green Fire...Shasta Trinity National Forest
National Weather Service Sacramento CA
413 PM PDT Sat Aug 16 2025

Forecast is based on forecast start time of 1700 PDT on August 16.
If conditions become unrepresentative...contact the National Weather
Service.

...Slight chance of isolated thunderstorms through Sunday morning...

.DISCUSSION...
Shower and isolated thunderstorm chances expected through early
Sunday morning as a quick moving weather system passes through.
Highest chances in the Green Fire vicinity expected between 6 pm
and 10 pm this evening, with additional low, but still nonzero,
chances returning after 3 am. Primarily wet thunderstorms
expected. Otherwise, near to below normal temperatures continue
this weekend alongside diurnal wind trends. A trend toward warmer
and drier weather is then anticipated moving into the week ahead.

.REST OF TODAY...

Sky/weather.........Mostly cloudy. Chance of showers and slight
                    chance of thunderstorms.
Max temperature.....84-89.
Min humidity........33-38 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds up to 5 mph. Gusty and erratic
                    winds expected near thunderstorms.
 Ridgetop...........Southwest around 14 mph.
Mixing height.......Near 5600 ft AGL.
Transport winds.....Southwest around 14 mph.
CWR.................8 percent.
Chance of thunder...23 percent.

TIME (PDT)      5 PM
Sky cover.......MCLDY
CWR.............8
Chc of thdr (%).23
Temp............86
RH..............36
SL/VL wind......SW 5G13
Ridgetop wind...SW 14
Mix hgt (ft)....5600
Transport wind..SW 14

.TONIGHT...

Sky/weather.........Partly cloudy early, becoming mostly cloudy
                    through the evening. Chance of showers and
                    isolated thunderstorms in the evening. Slight
                    chance of isolated showers and thunderstorms
                    overnight.
Min temperature.....61-66.
Max humidity........80-85 percent.
Wind (20 ft)........
 Slope/valley.......Light winds. Gusty and erratic winds expected
                    near thunderstorms in the evening and overnight.
 Ridgetop...........Southwest 6 to 14 mph.
Mixing height.......Falling to near 800 ft AGL overnight.
Transport winds.....South 6 to 14 mph.
CWR.................10 percent increasing to 17 percent late in the
                    evening.
Chance of thunder...23 percent.

TIME (PDT)      6 PM         10 PM        2 AM
Sky cover.......CLOUDY       MCLDY        MCLDY
CWR.............10           20           15
Chc of thdr (%).20           15           10
Temp............83           74           69
RH..............41           63           73
SL/VL wind......SW 3G12      W 2G6        S 2G5
Ridgetop wind...SW 14        SW 7         S 6
Mix hgt (ft)....5600         900          800
Transport wind..SW 14        SW 7         S 6

.SUNDAY...

Sky/weather.........Partly cloudy early, then becoming mostly sunny
                    late in the morning.
Max temperature.....80-85.
Min humidity........38-43 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming southwest up to 6 mph late
                    in the morning.
 Ridgetop...........Southwest 8 to 15 mph.
Mixing height.......Rising to near 5800 ft AGL by the afternoon.
Transport winds.....Southwest 8 to 15 mph.
CWR.................10 percent early in the morning, falling to 0
                    percent by midday.
Chance of thunder...5 percent early in the morning, falling to 0
                    percent by midday.

TIME (PDT)      6 AM         10 AM        2 PM
Sky cover.......PCLDY        PCLDY        MCLEAR
CWR.............10           10           0
Chc of thdr (%).10           10           0
Temp............65           70           80
RH..............82           76           52
SL/VL wind......SW 2G5       SW 3G8       SW 6G15
Ridgetop wind...S 8          SW 8         S 15
Mix hgt (ft)....1000         2300         5800
Transport wind..S 8          SW 8         S 15

$$
Forecaster...NR
Requested by...Hannah Haley
Type of request...WILDFIRE
.TAG 2519147.11/STO
.DELDT 08/16/25
.FormatterVersion 2.0.0
.EMAIL hannah.haley1@usda.gov,robert.holt@usda.gov