FNUS75 KFGZ 311829
FWSFGZ

SPOT FORECAST FOR CITY RX...KAIBAB NATIONAL FOREST
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1128 AM MST WED OCT 31 2012

FORECAST IS BASED ON IGNITION TIME OF 1130 MST ON OCTOBER 31.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE WILL PASS OVER NORTHERN ARIZONA TODAY
RESULTING IN A STABLE AIRMASS WITH LIGHT MIXING LAYER WINDS AND ONLY
A FEW HOURS OF GOOD VENTILATION RATES THIS AFTERNOON. SOUTHWEST FLOW
RETURNS FOR THURSDAY WITH IMPROVED VENTILATION. HIGH LEVEL CLOUD COVER
WILL ALSO BE ON THE INCREASE LATE TONIGHT THROUGH THURSDAY.

.TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....AROUND 69.
MIN HUMIDITY........8 PCT.
WINDS (20 FT).......LIGHT AND VARIABLE WINDS...BECOMING SOUTH
                    AROUND 5 MPH IN THE AFTERNOON...WITH A FEW
                    GUSTS NEAR 8 TO 12 MPH.
LAL.................1.
HAINES INDEX........4 LOW.
MAX VENT RATE.......GOOD (44000 KNOT-FT).
CLEARING INDEX......440.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....AROUND 31.
MAX HUMIDITY........51 PCT.
WINDS (20 FT).......SOUTH WINDS AROUND 5 MPH...BECOMING LIGHT
                    TERRAIN DRIVEN WINDS AFTER SUNSET.
LAL.................1.
HAINES INDEX........4 LOW.
MIN VENT RATE.......POOR (3300 KNOT-FT).
CLEARING INDEX......33.

.THURSDAY...

SKY/WEATHER.........PARTLY CLOUDY.
MAX TEMPERATURE.....AROUND 67.
MIN HUMIDITY........16 PCT.
WINDS (20 FT).......LIGHT AND VARIABLE WINDS IN THE MORNING...INCREASING
                    TO SOUTHWEST AROUND 15 MPH WITH GUSTS UP TO 25 MPH
                    FROM LATE MORNING THROUGH EARLY EVENING.
LAL.................1.
HAINES INDEX........3 VERY LOW.
MAX VENT RATE.......VERY GOOD (81400 KNOT-FT).
CLEARING INDEX......814.

$$
FORECASTER...SCHWITZER
REQUESTED BY...WILLIAMS DISPATCH CTR
REASON FOR REQUEST...PRESCRIBED
.TAG 20121031.CITYR.01/FGZ