FNUS75 KBYZ 301333
FWSBYZ

SPOT FORECAST FOR YELLOW HILL...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
733 AM MDT FRI SEP 30 2011

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON SEPTEMBER 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM 10 AM SATURDAY TO MIDNIGHT MDT
SATURDAY NIGHT...

.DISCUSSION...

...WARM AND DRY THROUGH MONDAY...

A STRONG RIDGE OF HIGH PRESSURE WILL BRING RECORD BREAKING HEAT
TO THE AREA TODAY AND SATURDAY. SLIGHTLY COOLER TEMPERATURES ARE
EXPECTED SUNDAY AND MONDAY...BUT STILL WELL ABOVE NORMAL. RH
VALUES WILL BE VERY LOW ACROSS THE REGION...WITH SINGLE DIGITS AND
LOW TEENS TODAY AND SATURDAY. GUSTY SOUTH TO SOUTHEAST WINDS WILL
PREVAIL OVER THE BURN SITE INTO SATURDAY...WITH STRONGER GUSTS
TO AROUND 25 MPH IN THE AFTERNOON. WINDS WILL INCREASE THROUGH
THE DAY SATURDAY AND SWITCH TO THE SOUTHWEST SATURDAY AFTERNOON.

.TODAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....81-86.
MIN HUMIDITY........8-13 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTH WINDS 5 TO 15 MPH.
 RIDGETOP...........SOUTHWEST 5 TO 15 MPH.
MIXING HEIGHT.......12400 FT AGL.
MIXING WINDS........SOUTHWEST 5 TO 10 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....49-54.
MAX HUMIDITY........38-43 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTH WINDS 5 TO 10 MPH.
 RIDGETOP...........SOUTH 10 TO 20 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........SOUTH 10 TO 20 MPH.

.SATURDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....85-90.
MIN HUMIDITY........7-12 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTH WINDS 5 TO 15 MPH...BECOMING
                    SOUTHWEST BY THE AFTERNOON.
 RIDGETOP...........SOUTH 15 TO 25 MPH.
MIXING HEIGHT.......12400 FT AGL.
MIXING WINDS........SOUTH 10 TO 20 MPH.

$$
FORECASTER...GILSTAD/RICHMOND
REQUESTED BY...MARVIN MATTHIESEN
TYPE OF REQUEST...PRESCRIBED
.TAG 20110930.YELLO.02/BYZ