FNUS75 KGJT 152012
FWSGJT

SPOT FORECAST FOR USFS MISCELLANEOUS PILES RX...USFS
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
212 PM MDT FRI MAR 15 2013

FORECAST IS BASED ON IGNITION TIME OF 0900 MDT ON MARCH 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...TWO PACIFIC LOW PRESSURE SYSTEMS PASS ON SATURDAY
AND SUNDAY. THE SATURDAY STORM IS MILD AND MOIST PRODUCING
AFTERNOON INSTABILITY WITH SHOWERS IN THE FORM OF RAIN. THE SECOND
SYSTEM PASSING EARLY SUNDAY IS COLDER AND HAS STRONGER GRADIENT
WINDS ASSOCIATED. BOTH WILL PRODUCE EXCELLENT AFTERNOON MIXING.

*NOTE: SMOKE DISPERSAL IS BASED ON COLORADO CRITERIA WHICH IS
 DIFFERENT THAN UTAH VALUES. THUS WE DO NOT PRODUCE SMOKE
 DISPERSAL FOR UTAH SPOT FORECASTS.


.SATURDAY UNTIL SUNSET...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED SHOWERS THROUGH THE
                    DAY. ISOLATED THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....48-53 F.
MIN HUMIDITY........32-37%.
20-FOOT WINDS.......NORTH WINDS 2-5 MPH INCREASING TO 8-12 MPH WITH
                    GUSTS TO AROUND 25 MPH...THEN SHIFTING TO WEST
                    5-15 MPH IN THE AFTERNOON. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR AFTERNOON THUNDERSTORMS.
CLEARING INDEX......LESS THAN 500 UNTIL 1000...THEN INCREASING TO
                    1000+ IN THE AFTERNOON.
HAINES INDEX........3 VERY LOW.
LAL.................1 UNTIL 1200...THEN 2.
MIXING HEIGHT.......300-2100 FT AGL INCREASING TO 8900 FT AGL IN
                    THE AFTERNOON.
TRANSPORT WINDS.....WEST 14 MPH.

.SATURDAY NIGHT...

SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY
                    CLOUDY. ISOLATED SHOWERS MAIONLY IN THE EVENING.
MIN TEMPERATURE.....31-36 F.
MAX HUMIDITY........56-61%.
20-FOOT WINDS.......NORTH WINDS 8-12 MPH WITH GUSTS TO AROUND 25 MPH
                    SHIFTING TO THE NORTHEAST 5-10 MPH BEFORE
                    MIDNIGHT.
CLEARING INDEX......DECREASING TO 500 AFTER MIDNIGHT.
HAINES INDEX........4 LOW.
LAL.................1.
MIXING HEIGHT.......10000 FT AGL DECREASING TO 3000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 20 MPH BECOMING WEST 15 MPH AFTER
                    MIDNIGHT.

.SUNDAY UNTIL SUNSET...

SKY/WEATHER.........PARTLY CLOUDY (50-60%). SCATTERED SHOWERS IN
                    THE MORNING.
MAX TEMPERATURE.....42-47 F.
MIN HUMIDITY........25-30%.
20-FOOT WINDS.......BREEZY. WEST WINDS 5-15 MPH WITH GUSTS TO 30
                    MPH.
CLEARING INDEX......1000+.
HAINES INDEX........3 VERY LOW.
LAL.................1.
MIXING HEIGHT.......5000 FT AGL INCREASING TO 13000 FT AGL.
TRANSPORT WINDS.....WEST 30-40 MPH.

$$
FORECASTER...JOE RAMEY
REQUESTED BY...RACHEL CRESTO
TYPE OF REQUEST...PRESCRIBED
.TAG 20130315.USFSM.01/GJT