FNUS75 KGJT 020450
FWSGJT

SPOT FORECAST FOR ARCHES NP PILES...NPS
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
950 PM MST THU MAR 1 2012

FORECAST IS BASED ON IGNITION TIME OF 0930 MST ON MARCH 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
LAST PIECE OF THIS STORM WILL BE MOVING THROUGH SOUTHEAST UTAH THIS
MORNING WITH SOME CLEARING AND PRECIPITATION BECOMING MORE ISOLATED
THIS AFTERNOON. HIGH PRESSURE BUILDING INTO THE GREAT BASIN BEHIND
A COLD FRONTAL PASSAGE WILL LEAVE WINDS FROM THE NORTH TO NORTHWEST
THROUGH THE DAY WITH GUSTS TO 25 MPH AT TIMES. COLD AIR ALOFT WILL
KEEP GOOD MIXING IN TODAY...BUT WARMER AIR ARRIVING ON SATURDAY
LOOK TO DROP THESE MIXING HEIGHTS SIGNIFICANTLY ON SATURDAY.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY (70-80%) THEN BECOMING PARTLY
                    CLOUDY (40-50%). SCATTERED SNOW SHOWERS IN THE
                    MORNING...THEN ISOLATED SHOWERS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 41 F.
MIN HUMIDITY........30 TO 35%.
20-FOOT WINDS.......NORTHWEST WINDS 15 TO 20 MPH WITH GUSTS AROUND
                    25 MPH THROUGH EARLY AFTERNOON.
CLEARING INDEX......350 INCREASING TO 1050 IN THE LATE MORNING AND
                    AFTERNOON.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 12400 FT AGL.
TRANSPORT WINDS.....NORTH 19 MPH.

.TONIGHT...

SKY/WEATHER.........CLEAR (0-10%).
MIN TEMPERATURE.....6-11 F.
MAX HUMIDITY........87-92%.
20-FOOT WINDS.......SOUTHWEST WINDS 5 MPH.
CLEARING INDEX......600 DECREASING TO 50 IN THE LATE EVENING AND
                    OVERNIGHT.
MIXING HEIGHT.......7300 FT AGL DECREASING TO 1000 FT AGL IN THE
                    LATE EVENING AND OVERNIGHT.
TRANSPORT WINDS.....NORTH 5 MPH SHIFTING TO THE WEST AFTER
                    MIDNIGHT.

.SATURDAY...

SKY/WEATHER.........SUNNY (0-10%).
MAX TEMPERATURE.....NEAR 40 F.
MIN HUMIDITY........29-34%.
20-FOOT WINDS.......WEST WINDS 5 TO 10 MPH.
CLEARING INDEX......50 INCREASING TO 350 IN THE AFTERNOON.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 3900-5100 FT AGL IN
                    THE LATE MORNING AND AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 5 MPH.

$$
FORECASTER...DENNIS PHILLIPS
REQUESTED BY...JOANIE LAWRENCE
TYPE OF REQUEST...PRESCRIBED
.TAG 20120302.ARCHE.01/GJT