FNUS76 KMFR 191408
FWSMFR

SPOT FORECAST FOR A-12 PILES RX...USFS KNF
NATIONAL WEATHER SERVICE MEDFORD OR
608 AM PST WED JAN 19 2011

FORECAST IS BASED ON IGNITION TIME OF 1000 PST ON JANUARY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE WILL CONTINUE BUILDING IN TODAY IN THE WAKE OF THE WEAK
OVERNIGHT COLD FRONT. THIS WILL RESULT IN CLEARING SKIES...FALLING
HUMIDITIES...AND SOME MIXING BELOW THE SUBSIDENCE INVERSION. THIS
INVERSION IS EXPECTED TO BE ABOUT 3000 FEET ABOVE THE SURFACE. THE
INVERSION WILL STRENGTHEN AND LOWER TONIGHT AND IS UNLIKELY TO LIFT
MUCH ON THURSDAY. ON FRIDAY ANOTHER WEAK COLD FRONT WILL CAUSE
INCREASING NORTHWEST WINDS ALOFT THAT LOOK TO BE ENOUGH TO AGAIN
PROVIDE SOME AFTERNOON MIXING.


.TODAY...
SKY/WEATHER.........PARTLY CLOUDY BECOMING MOSTLY SUNNY.
MAX TEMPERATURE.....45-50.
MIN HUMIDITY........41-51 PERCENT.
EYE LEVEL WINDS.....NORTHEAST 3 TO 6 MPH.
MIXING HEIGHT.......INCREASING TO 2500 FT AGL IN THE LATE MORNING
                    AND THEN TO 3500 FT IN THE AFTERNOON.
MIXING WINDS........NORTHEAST 5 TO 10 MPH.
CWR.................0 PERCENT.


.TONIGHT...
SKY/WEATHER.........CLEAR. PATCHY FREEZING FOG.
MIN TEMPERATURE.....23-28.
MAX HUMIDITY........90-100 PERCENT.
EYE LEVEL WINDS.....NORTHEAST 3 TO 6 MPH BECOMING EAST 2 TO 4 MPH
                    AFTER MIDNIGHT.
MIXING HEIGHT.......DIMINISHING TO THE SURFACE DURING THE EVENING.
MIXING WINDS........NORTHEAST 5 TO 10 MPH BECOMING EAST 3 TO 6 MPH
                    AFTER MIDNIGHT.
CWR.................0 PERCENT.


.THURSDAY...
SKY/WEATHER.........PATCHY FREEZING FOG EARLY IN THE MORNING.
                    OTHERWISE SUNNY.
MAX TEMPERATURE.....43-48.
MIN HUMIDITY........43-53 PERCENT.
EYE LEVEL WINDS.....EAST WIND 2 TO 4 MPH BECOMING NORTHEAST 0-3 MPH.
MIXING HEIGHT.......INCREASING TO 500 TO 1000 FT AGL.
MIXING WINDS........EAST 3 TO 6 MPH EARLY BECOMING NORTHEAST 0 TO 5
                    MPH.
CWR.................0 PERCENT.


.FRIDAY...
SKY/WEATHER.........PARTLY CLOUDY.
MAX TEMPERATURE.....50-55.
MIN HUMIDITY........43-53 PERCENT.
EYE LEVEL WINDS.....NORTH WIND 0 TO 3 MPH BECOMING NORTHWEST 3 TO 6
                    MPH WITH GUSTS 9 TO 12 MPH IN THE AFTERNOON.
MIXING HEIGHT.......500 FT AGL OR LESS THROUGH THE MORNING THEN RISING
                    TO 2000 TO 4000 FEET AGL IN THE AFTERNOON.
MIXING WINDS........NORTH 0 TO 5 MPH BECOMING NORTHWEST 5 TO 10 MPH
                    WITH GUSTS 15 TO 20 MPH.
CWR.................0 PERCENT.


$$
FORECASTER...LUTZ
REQUESTED BY...MICHAEL POWELL
TYPE OF REQUEST...PRESCRIBED
.TAG 20110119.A12PI.01/MFR