FNUS75 KMSO 171111
FWSMSO

SPOT FORECAST FOR COW CREEK UNIT S2
NATIONAL WEATHER SERVICE MISSOULA MT
511 AM MDT MON MAY 17 2010

FORECAST IS BASED ON IGNITION TIME OF 1200 MDT ON MAY 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...THE APPROACHING TROUGH WILL BEGIN TO HAVE MORE
INFLUENCE TODAY...MAINLY INCREASING ATMOSPHERIC MOISTURE AND
INSTABILITY FOR A BETTER THREAT OF CONVECTION. NEVERTHELESS...THE
SOUTHERLY FLOW ALOFT AHEAD OF THE TROUGH WILL KEEP THE AIR MASS
VERY WARM. LOW LEVEL FLOW SHOULD BE SOUTHEAST THIS AFTERNOON...AND
EVEN THOUGH YOUR SITE IS SOMEWHAT SHELTERED FROM THAT
DIRECTION...EXPECT SURFACE WINDS TO BE MOSTLY SOUTH OR SOUTHEAST.

.TODAY...

SKY/WEATHER.........PARTLY CLOUDY THIS MORNING...THEN MOSTLY CLOUDY.
                    CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
                    AFTERNOON.
CWR.................20 PERCENT.
MAX TEMPERATURE.....72-77.
MIN HUMIDITY........28-32 PERCENT.
WIND (20 FT)........LIGHT TO CALM IN THE MORNING...THEN
                    SOUTHEAST 5-7 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF THUNDERSTORMS IN THE
                    EVENING. CHANCE OF RAIN SHOWERS THROUGH THE
                    NIGHT.
CWR.................20 PERCENT.
MIN TEMPERATURE.....45-50.
MAX HUMIDITY........63-68 PERCENT.
WIND (20 FT)........SOUTHEAST 4-7 MPH IN THE EVENING...DECREASING AFTER
                    DARK.

.TUESDAY...

SKY/WEATHER.........CHANCE OF RAIN SHOWERS IN THE MORNING...THEN
                    RAIN SHOWERS LIKELY AND SLIGHT CHANCE OF
                    THUNDERSTORMS IN THE AFTERNOON.
CWR.................40 PERCENT.
MAX TEMPERATURE.....61-66.
MIN HUMIDITY........41-46 PERCENT.
WIND (20 FT)........VARIABLE 2-4 MPH BECOMING WEST 8-10 MPH IN THE
                    AFTERNOON.

$$
FORECASTER...WHITMORE
REQUESTED BY...JACOB JERESEK
TYPE OF REQUEST...PRESCRIBED
.TAG 20100517.COWCR.01/MSO