FNUS75 KMSO 111445
FWSMSO

SPOT FORECAST FOR PETTY ROCK 12
NATIONAL WEATHER SERVICE MISSOULA MT
845 AM MDT FRI SEP 11 2009

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON SEPTEMBER 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE WILL CONTINUE TO ENHANCE VALLEY
INVERSIONS THROUGH SATURDAY. THIS WILL LEAD TO STABLE CONDITIONS
AND POOR MIXING THROUGHOUT MOST OF THE DAYTIME HOURS WITH LATE
AFTERNOON MIXING POSSIBLE FOR 1 TO 2 HOURS PRIOR TO SUNSET. ANY
SMOKE THAT REACHES ABOVE THE TERRAIN WILL TRANSLATE WESTWARD WITH
EAST WINDS ALOFT.

.TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....81-86.
MIN HUMIDITY........12-17 PERCENT.
WIND (20 FT)........UPSLOPE 3-6 MPH.
MIXING HEIGHT.......2700 FT AGL.
MIXING WINDS........EAST 10 MPH.

.TONIGHT...

MIN TEMPERATURE.....40-45.
MAX HUMIDITY........73-78 PERCENT.

.SATURDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....83-88.
MIN HUMIDITY........10-15 PERCENT.
WIND (20 FT)........UPSLOPE 3-6 MPH.
MIXING HEIGHT.......2700 FT AGL.
MIXING WINDS........EAST 10 MPH.

$$
FORECASTER...DEROSA/MEAD
REQUESTED BY...BENJ HEGG
TYPE OF REQUEST...PRESCRIBED
.TAG 20090911.PETTY.01/MSO