FNUS75 KMSO 141440
FWSMSO

SPOT FORECAST FOR PETTY ROCK 500 2C
NATIONAL WEATHER SERVICE MISSOULA MT
840 AM MDT FRI MAY 14 2010

FORECAST IS BASED ON IGNITION TIME OF 1230 MDT ON MAY 14.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE AND VERY LIGHT WIND PATTERN HAS DEVELOPED
OVER THE AREA TODAY AND SATURDAY.   WITH MUCH OF THIS UNIT ON A
NORTHEAST FACE...EVEN THE SUN WILL NOT HAVE A SIGNIFICANT INFLUENCE TO
PRODUCE UPSLOPE WINDS.  THE ATMOSPHERE WILL BECOME FAIRLY UNSTABLE THIS
AFTERNOON AND EVEN MORE UNSTABLE SATURDAY.

.TODAY...

SKY/WEATHER.........SUNNY THIS MORNING.  INCREASING CUMULUS MID DAY AND
                    AFTERNOON.
CWR.................0 PERCENT.
MAX TEMPERATURE.....63-67.
MIN HUMIDITY........22-27 PERCENT.
WIND (20 FT)........VARIABLE 1-5 MPH.
MIXING HEIGHT.......LESS THAN 1000 FT THIS MORNING INCREASING TO
                    6000 FT AGL THIS AFTERNOON.
MIXING WINDS........SOUTHWEST 5 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
MIN TEMPERATURE.....45-50.
MAX HUMIDITY........80 PERCENT BOTTOM TO 50 PERCENT TOP.
WIND (20 FT)........DOWNSLOPE TO 5 MPH.
MIXING HEIGHT.......500 FT AGL.
MIXING WINDS........SOUTHWEST 5 MPH.

.SATURDAY...

SKY/WEATHER.........PARTLY CLOUDY.  SLIGHT CHANCE OF AN AFTERNOON SHOWER.
CWR.................0 PERCENT.
MAX TEMPERATURE.....65-69.
MIN HUMIDITY........23-28 PERCENT.
WIND (20 FT)........VARIABLE 1-5 MPH.
MIXING HEIGHT.......INCREASING TO ABOVE 5000 FT AGL IN THE AFTERNOON.
MIXING WINDS........SOUTHWEST 5 MPH.

$$
FORECASTER...BAUCK
REQUESTED BY...JEFFREY HAYES
TYPE OF REQUEST...PRESCRIBED
.TAG 20100514.PETTY.01/MSO