FNUS75 KPIH 221159
FWSPIH

SPOT FORECAST FOR MARTIN RX...SOUTH IDAHO
NATIONAL WEATHER SERVICE POCATELLO ID
559 AM MDT THU OCT 22 2009

FORECAST IS BASED ON IGNITION TIME OF 1640 MDT ON OCTOBER 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...MID-LEVEL CLOUDS WILL REMAIN OVER THE BURN AREA
THIS MORNING BEFORE GIVING WAY TO CLEARING SKIES THIS AFTERNOON
AS A MODEST RIDGE OF HIGH PRESSURE BUILDS ALONG THE PAC COAST. THE
WEAK NORTHWEST FLOW ALOFT WILL INCREASE LATE TONIGHT HELPING TO
ENHANCE THE NORMAL DOWNSLOPE FLOW OVER THE BURN.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
TEMPERATURE.........MAX/IGNITION TIME 52.
RH..................MIN/IGNITION TIME 44 TO 50 PERCENT.
WIND (20 FT)........DOWNSLOPE WINDS TO 6 MPH THIS MORNING
                    QUICKLY BECOMING UPSLOPE TO 6 WITH GUSTS TO 12
                    MPH AFTER AROUND 1100 MDT ESPECIALLY WITH
                    THE CLOUDS CLEARING ABOUT THAT TIME. WITH THE
                    MIXING HEIGHT EXTENDING SO HIGH...YOU MAY VERY
                    WELL MIX DOWN THE TRANSPORT WINDS AROUND
                    IGNITION TIME WITH NORTHWEST WINDS OF 5 TO 10
                    MPH.
CWR.................1 PERCENT.
MIXING HEIGHT.......INCREASING TO 11500 MSL THIS AFTERNOON.
MIXING WINDS........WEST-NORTHWEST AROUND 13 MPH.
HAINES INDEX........2.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
TEMPERATURE.........MIN 32.
RH..................MAX 75 TO 85 PERCENT.
WIND (20 FT)........NORTHWEST/DOWNSLOPE WINDS TO 6 MPH
                    DEVELOPING AFTER 1900 MDT.
CWR.................2 PERCENT.
MIXING HEIGHT.......SURFACE BASED INVERSION POTENTIALLY EXTENDING
                    UP TO 7000 MSL BY MORNING WHILE A SUBSIDENCE
                    INVERSION DROPS THROUGH THE NIGHT TO AROUND
                    8200 MSL.
MIXING WINDS........NORTHWEST AROUND 8 MPH.
HAINES INDEX........3.

$$
FORECASTER...HUSTON
REQUESTED BY...BRANDON BROWN
TYPE OF REQUEST...PRESCRIBED
.TAG 20091021.MARTI.02/PIH