FNUS75 KGJT 182049
FWSGJT

SPOT FORECAST FOR ARCHES NP PILES...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
149 PM MST SAT FEB 18 2012

FORECAST IS BASED ON IGNITION TIME OF 1200 MST ON FEBRUARY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A PACIFIC STORM SYSTEM WILL SWEEP OVER THE FIRE SITE
BEGINNING SUNDAY MORNING. CHANCES FOR PRECIPITATION INCREASE DURING
THE COURSE OF THE MORNING...THEN REMAIN RELATIVELY HIGH THROUGHOUT
THE DAY. TROUGH PASSAGE WILL BRING A WIND SHIFT WITH A COLD FRONT
SWEEPING THROUGH THE AREA EARLY IN THE AFTERNOON. MIXING WILL BE
RELATIVELY DEEP WITH GOOD TRANSPORT WINDS LEADING TO FAVORABLE
CLEARING INDICES.

.SUNDAY...

SKY/WEATHER.........CLOUDY (80-90%). SCATTERED SHOWERS OF
    MIXED RAIN AND SNOW DEVELOPING LATE IN THE
    MORNING...BECOMING NUMEROUS BY 1300.
    SHOWERS BECOMING ALL RAIN AFTER 1300.
MAX TEMPERATURE.....41-46 F.
20-FOOT WINDS.......SOUTH WINDS 5 TO 10 MPH INCREASING TO 10 TO 15
                    MPH WITH GUSTS TO 25 MPH BY 1600. SHIFTING TO THE
    WEST AROUND 1300.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 4800 FT AGL IN THE
                    AFTERNOON.
CLEARING INDEX......250 INCREASING TO 1050 BY 1300.
TRANSPORT WINDS.....SOUTHWEST 25 MPH.

$$

FORECASTER...NORV LARSON
REQUESTED BY...KEITH KRAUSE
TYPE OF REQUEST...PRESCRIBED
.TAG 20120219.ARCHE.01/GJT