FNUS76 KSTO 171737
FWSSTO

SPOT FORECAST FOR BUMMER FIRE...USFS
NATIONAL WEATHER SERVICE SACRAMENTO CA
1037 AM PDT SUN OCT 17 2010

#304-10

FORECAST IS BASED ON REQUEST TIME OF 1004 PDT ON OCTOBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
LOW PRESSURE SYSTEM WILL BE APPROACHING TODAY AND PASSING WELL
SOUTH OF THE BURN SITE EARLY THIS WEEK. THIS WILL RESULT IN COOL
TEMPERATURES AND HIGH HUMIDITY. THE LOW PRESSURE SYSTEM WILL ALSO
BRING A CHANCE OF SHOWERS OVER THE AREA AND POSSIBLY ISOLATED
THUNDERSTORMS OVER THE WEST SLOPE SIERRA NEVADA TODAY. THERE WILL
STILL BE A CHANCE OF LINGERING SHOWERS ON MONDAY. DRIER AND SLIGHTLY
WARMER CONDITIONS ARE EXPECTED TUESDAY AND WEDNESDAY AS HIGH PRESSURE
BUILDS OVER THE AREA.

.TODAY...

SKY/WEATHER.........NUMEROUS SHOWERS IN THE MORNING...THEN SHOWERS
                    AND ISOLATED THUNDERSTORMS IN THE AFTERNOON.
                    POSSIBLE RAINFALL AMOUNTS FROM .10 TO .25 OF
                    AN INCH.
MAX TEMPERATURE.....62-66 AROUND 4000 FT...50-55 AROUND 6000 FT.
MIN HUMIDITY........45-55 PERCENT THIS MORNING...HUMIDITY RISING
                    TO 75 TO 85 PERCENT THIS AFTERNOON.
WIND (20 FT)........
   SLOPE/VALLEY.....EAST WINDS 2 TO 5 MPH SHIFTING TO THE SOUTHWEST
                    2 TO 7 MPH IN THE AFTERNOON.
   RIDGETOP.........SOUTHWEST 8 TO 15 MPH BECOMING SOUTH LATE IN
                    THE DAY.
CWR.................80 PERCENT.
LAL.................2.
MIXING HEIGHT.......RISING TO 5000 FT AGL.
MIXING WINDS........SOUTHWEST BACKING TO THE SOUTH 5 TO 10 MPH.

.TONIGHT...

SKY/WEATHER.........CLOUDY. SHOWERS AND A SLIGHT CHANCE OF
                    THUNDERSTORMS IN THE EVENING...THEN A CHANCE OF
                    SHOWERS AFTER MIDNIGHT.
MIN TEMPERATURE.....41-46.
MAX HUMIDITY........95-100 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....SOUTHWEST WINDS 2 TO 5 MPH BECOMING NORTHEAST TO
                    SOUTHEAST.
   RIDGETOP.........SOUTHEAST 5 TO 10 MPH IN THE EVENING BECOMING
                    12 TO 18 MPH.
CWR.................80 PERCENT.
LAL.................2.
MIXING HEIGHT.......LOWERING TO GROUND LEVEL.
MIXING WINDS........EAST 5 TO 10 MPH.

.MONDAY...

SKY/WEATHER.........MOSTLY CLOUDY. A CHANCE OF SHOWERS.
MAX TEMPERATURE.....56-61.
MIN HUMIDITY........62-67 PERCENT.
WIND (20 FT)........
   SLOPE/VALLEY.....NORTHEAST TO EAST WINDS 2 TO 6 MPH.
   RIDGETOP.........EAST 12 TO 18 MPH.
CWR.................30 PERCENT.
LAL.................1.
MIXING HEIGHT.......RISING TO 5000 FT AGL.
MIXING WINDS........EAST 10 TO 15 MPH.


FORECASTER...JHM
REQUESTED BY...J FRANKLIN
REASON FOR REQUEST...WILDFIRE
.TAG 20101017.BUMME.01/STO

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