544
FNUS76 KSTO 102138
FWSSTO

Spot Forecast for Royal Fire...Tahoe National Forest
National Weather Service Sacramento CA
238 PM PDT Wed Jul 10 2024

Forecast is based on forecast start time of 0600 PDT on July 11.
If conditions become unrepresentative...contact the National Weather
Service.

...HEAT ADVISORY IN EFFECT UNTIL 8 PM PDT FRIDAY...

.DISCUSSION...
Hot and very dry conditions continue over the wildfire through Friday.
Gusty west-southwesterly winds in the afternoon 15 to 25 mph, returning
to light (generally less than 5 mph) downslope overnight. Daytime RH
will be in the low to mid teens with poor overnight recovery in the mid
30s to mid 40s. Brief warm up Thursday-Friday before much cooler
temperatures in the upper 80s to low 90s by Sunday. Additionally, there is
a very slight chance (5 to 10%) of isolated showers/thunderstorms,
possibly dry, in the high elevations of the Sierra on Saturday.

.THURSDAY...

Sky/weather.........Sunny. Haze.
Max temperature.....94-98.
Min humidity........11-15 percent.
Wind (20 ft)........
 Slope/valley.......Southeast winds up to 5 mph shifting to the
                    southwest 5 to 10 mph with afternoon gusts 15-25
                    mph.
 Ridgetop...........Southwest around 15-20 mph with gusts up to 25 mph
in the afternoon.
Mixing height.......9700 ft AGL.
Transport winds.....Southwest around 16 mph.
CWR.................0 percent.
LAL.................1.

.THURSDAY NIGHT...

Sky/weather.........Clear.
Min temperature.....61-65.
Max humidity........32-36 percent.
Wind (20 ft)........
 Slope/valley.......West-southwest winds 5 to 10 mph with gusts to up to
20 mph in the early evening becoming light overnight.
 Ridgetop...........West-southwest around 10 mph with gusts 15 to 20 mph
in the early evening becoming light overnight.
Mixing height.......1000 ft AGL.
Transport winds.....West around 10 mph.
CWR.................0 percent.
LAL.................1.

.FRIDAY...

Sky/weather.........Sunny.
Max temperature.....94-98.
Min humidity........13-17 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming southwest 5 to 10 mph in
                    the afternoon with gust up to 20 mph.
 Ridgetop...........Southwest winds 5 to 10 mph in the afternoon
with gusts 15 to 20 mph.
Mixing height.......1200 ft AGL increasing to 15300 ft AGL late in
                    the morning.
Transport winds.....South around 10 mph.
CWR.................0 percent.
LAL.................1.

$$
Forecaster...KF
Requested by...Rita Clipperton
Type of request...WILDFIRE
.TAG 2417737.0/STO
.DELDT 07/10/24
.FormatterVersion 2.0.0
.EMAIL rita.clipperton@usda.gov