FNUS75 KBYZ 201939
FWSBYZ

SPOT FORECAST FOR GILEAD...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
139 PM MDT THU SEP 20 2012

FORECAST IS BASED ON REQUEST TIME OF 1301 MDT ON SEPTEMBER 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A STRONG NORTHWEST FLOW ALOFT WILL BRING GUSTY NORTHWEST WINDS TO
THE FIRE THE REST OF TODAY AND FRIDAY. RELATIVE HUMIDITIES WILL
FALL INTO THE TEENS TO AROUND 20 PERCENT THIS AFTERNOON. HUMIDITIES
WILL BE HIGHER...IN THE 20S...ON FRIDAY. A HIGH PRESSURE RIDGE WILL
SLIDE EAST OVER THE AREA FRIDAY NIGHT...BRINGING LIGHTER WINDS.
HUMIDITY RECOVERIES WILL BE HIGH BOTH NIGHTS.

.REST OF TODAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....64-69.
MIN HUMIDITY........17-22 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS 10 TO 20 MPH.
 RIDGETOP...........NORTHWEST 20 TO 35 MPH.
MIXING HEIGHT.......7500 FT AGL.
MIXING WINDS........NORTHWEST 15 TO 25 MPH.
HAINES INDEX........4.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....37-42.
MAX HUMIDITY........72-82 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS 5 TO 15 MPH.
 RIDGETOP...........NORTHWEST 20 TO 35 MPH.
MIXING HEIGHT.......1400 FT AGL.
MIXING WINDS........NORTHWEST 20 TO 35 MPH.
HAINES INDEX........4.

.FRIDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....62-67.
MIN HUMIDITY........21-26 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS 10 TO 20 MPH.
 RIDGETOP...........NORTHWEST 20 TO 35 MPH.
MIXING HEIGHT.......5600 FT AGL.
MIXING WINDS........NORTHWEST 20 TO 35 MPH.
HAINES INDEX........4.

.FRIDAY NIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....38-43.
MAX HUMIDITY........70-80 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS 10 TO 20 MPH EARLY...BECOMING
                    DOWNSLOPE/DOWN-VALLEY AROUND 5 MPH OVERNIGHT.
 RIDGETOP...........NORTHWEST 5 TO 15 MPH.
MIXING HEIGHT.......1040 FT AGL.
MIXING WINDS........NORTHWEST 5 TO 15 MPH.
HAINES INDEX........4.

$$
FORECASTER...ARTHUR
REQUESTED BY...KEVIN HILLARD
TYPE OF REQUEST...WILDFIRE
.TAG 20120920.GILEA.02/BYZ