Suppression Forecast
Issued by NWS Sacramento, CA

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000
FNUS76 KSTO 210334
FWSSTO

SPOT FORECAST for Bummers Fire...USFS
National Weather Service SACRAMENTO CA
834 PM PDT Wed Sep 20 2017

Forecast is based on request time of 0600 PDT on September 21.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Cold front has passed through the area, but a broad upper trough will
develop over the region today (Thursday) keeping temperatures cool and
humidity rather high. There will be enough instability for scattered
showers to develop over the higher terrain, especially in the afternoon.
However, winds will decrease. Warmer and drier weather expected over
the weekend as the trough moves eastward into the Great Basin.

Note: Temperature and humidity forecasts adjusted from Pinecrest 2
RAWS due to difference of elevation of almost 1000 ft.


.THURSDAY...

Sky/weather.........Mostly cloudy with a chance of rain showers in the
                    afternoon, possibly mixed with snow at the higher
                    elevations. Precipitation amounts less than .10".
Max temperature.....39-43.
Min humidity........greater than 70 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 4 to 9 mph.
 Ridgetop...........Southwest 8 to 16 mph.
Mixing height.......Rising to 5000-5500 ft AGL in the afternoon.
Transport winds.....Southwest 4 to 11 mph.
CWR.................20 percent.
LAL.................1.

.THURSDAY NIGHT...

Sky/weather.........Mostly cloudy in the evening then becoming
                    partly cloudy.
Min temperature.....32-36.
Max humidity........86-91 percent in the evening, then lowering to
                    to around 60 percent by morning.
Wind (20 ft)........
 Slope/valley.......West winds 5 to 8 mph shifting to the northeast
                    up to 5 mph after midnight.
 Ridgetop...........Southwest 8 to 15 mph in the evening becoming
                    northeast 5 to 10 mph after midnight.
Mixing height.......Lowering to 500-800 ft AGL.
Transport winds.....West 5 to 10 mph in the evening becoming northeast
                    up to 5 mph after midnight.
CWR.................0 percent.
LAL.................1.

.FRIDAY...

Sky/weather.........Mostly sunny in the morning then becoming
                    partly cloudy.
Max temperature.....47-53.
Min humidity........40-45 percent.
Wind (20 ft)........
 Slope/valley.......Northeast winds up to 6 mph shifting to the
                    northwest 4 to 7 mph in the afternoon.
 Ridgetop...........Northeast 5 to 10 mph becoming northwest 7 to 14 mph
                    in the afternoon.
Mixing height.......Rising to 6000-6500 ft AGL in the afternoon.
Transport winds.....Northeast up to 5 mph becoming northwest up to 5 mph
                    in the afternoon.
CWR.................0 percent.
LAL.................1.

$$
Forecaster...JM
Requested by...Amanda Lindeman
Type of request...WILDFIRE
.TAG 1716032.2/STO
.EMAIL alindeman@fs.fed.us


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