FNUS75 KGJT 211206
FWSGJT

SPOT FORECAST FOR ARCHES NP PILES...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
506 AM MST TUE FEB 21 2012

FORECAST IS BASED ON IGNITION TIME OF 1100 MST ON FEBRUARY 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...PERIODS OF SUN AND CLOUDS TODAY OVER THE BURN SITE
AS DISTURBANCES MOVE OVERHEAD BUT PRIMARILY NORTH OF ARCHES
NATIONAL PARK. WEST SURFACE WINDS OF 5 TO 8 MPH WILL SHIFT TO THE
SOUTHWEST IN THE EARLY AFTERNOON. WINDS WILL INCREASE TO ABOUT 25
MPH ABOUT 10000 FT ALLOWING FOR GOOD SMOKE DISPERSAL AND A MIXING
HEIGHT OF 6000FT AGL.

.TODAY...

SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY.
MAX TEMPERATURE.....44-49 F.
MIN HUMIDITY........28-33%.
20-FOOT WINDS.......WEST WINDS 5 TO 8 MPH SHIFTING TO THE SOUTHWEST.
SMOKE DISPERSAL.....POOR INCREASING TO GOOD IN THE AFTERNOON.
CLEARING INDEX......100 INCREASING TO 850.
MIXING HEIGHT.......1000-2900 FT AGL INCREASING TO 6000 FT AGL IN
                    THE AFTERNOON.
TRANSPORT WINDS.....WEST 15 MPH.

$$
FORECASTER...TOM RENWICK
REQUESTED BY...KEITH KRAUSE
TYPE OF REQUEST...PRESCRIBED
.TAG 20120221.ARCHE.01/GJT