FNUS75 KFGZ 301154
FWSFGZ

SPOT FORECAST FOR ARMSTRONG...GNP GRAND CANYON NP
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
454 AM MST TUE AUG 30 2011

FORECAST IS BASED ON REQUEST TIME OF 2215 MST ON AUGUST 29.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE WILL REMAIN CENTERED OVER SOUTHERN NEW MEXICO...WITH A
DRIER SOUTHWEST FLOW ALOFT OVER FAR NORTHERN ARIZONA. THIS DRIER AIR ALOFT
WILL SUPPRESS THUNDERSTORM ACTIVITY...WITH ONLY A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. MAX TEMPERATURES WILL BE WELL ABOVE NORMAL. GUSTY SOUTHWEST
WINDS ARE EXPECTED DURING THE AFTERNOONS THROUGH AT LEAST WEDNESDAY.

.TODAY...

SKY/WEATHER.........SUNNY THROUGH 1200L THEN PARTLY CLOUDY WITH A SLIGHT
                    CHANCE OF SHOWERS AND THUNDERSTORMS.
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........15 PCT.
WINDS (20 FT).......LIGHT WINDS THROUGH 1030L THEN SOUTHWEST AROUND 10 MPH
                    WITH GUSTS TO 20 MPH.
LAL.................2.
HAINES INDEX........4 LOW.
MAX VENT RATE.......EXCELLENT (153700 KNOT-FT).
CLEARING INDEX......1537.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS THROUGH MIDNIGHT THEN CLEARING
MIN TEMPERATURE.....AROUND 52.
MAX HUMIDITY........69 PCT.
WINDS (20 FT).......SOUTHWEST WINDS AROUND 5 MPH WITH GUSTS UP TO
                    20 MPH IN THE EVENING BECOMING LIGHT.
LAL.................2.
HAINES INDEX........4 LOW.
MIN VENT RATE.......POOR (3600 KNOT-FT).
CLEARING INDEX......36.

.WEDNESDAY...

SKY/WEATHER.........PARTLY CLOUDY. A CHANCE OF
                    SHOWERS AND THUNDERSTORMS.
MAX TEMPERATURE.....AROUND 85.
MIN HUMIDITY........23 PCT.
WINDS (20 FT).......SOUTH WINDS AROUND 5 MPH INCREASING TO
                    SOUTHWEST AROUND 15 MPH IN THE AFTERNOON. GUSTS
                    UP TO 25 MPH IN THE LATE MORNING AND AFTERNOON.
LAL.................3.
HAINES INDEX........4 LOW.
MAX VENT RATE.......EXCELLENT (279900 KNOT-FT).
CLEARING INDEX......2799.

$$
FORECASTER...LEBLANC
REQUESTED BY...BRANDON OBERHARDT
REASON FOR REQUEST...WILDFIRE
.TAG 20110829.ARMST.01/FGZ