FNUS75 KBOI 151716
FWSBOI

SPOT FORECAST FOR RAINBOW FIRE...PAYETTE NF
NATIONAL WEATHER SERVICE BOISE ID
1116 AM MDT SUN AUG 15 2010

FORECAST IS BASED ON REQUEST TIME OF 1036 MDT ON AUGUST 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...WARM CONDITIONS WITH INCREASING HAINES NEXT 2 DAYS...

.DISCUSSION...
A WARM AND DRY AIR MASS WILL BE OVER THE FIRE AREA THE NEXT 2 DAYS AS A
SURFACE THERMAL TROUGH OVER OREGON SHIFTS EASTWARD THROUGH TUESDAY. A
WEAK LOW OVER THE CALIFORNIA/OREGON BORDER MOVES EASTWARD TONIGHT. THIS
COMBINES WITH LINGERING MOISTURE OVER THE EASTERN HALF OF THE PAYETTE FOREST
MONDAY. SO ANY THUNDERSTORM ACTIVITY WILL STAY EAST OF THE FIRE LOCATION.
TUESDAY IS EXPECTED TO BE THE HOTTEST AND MOST UNSTABLE DAY WITH HAINES OF 5.
HOT TEMPERATURES IN THE LOWER PORTIONS OF THE SALMON RIVER WERE IN THE MID 90S
YESTERDAY AND ARE EXPECTED TO BE WARMER THE NEXT SEVERAL DAYS. THIS WILL HELP
BRING STRONGER UP CANYON WINDS TO THE FIRE AREA DURING THE DAY WHICH SHOULD
LAST INTO THE EVENING BUT SHIFTING DOWN DRAINAGE.

.REST OF TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....74 TO 78.
MIN HUMIDITY........20 TO 25 PERCENT.
WIND (EYE LEVEL)....UP SLOPE 2 TO 4 MPH THIS MORNING BECOMING UP CANYON
                    7 TO 10 MPH WITH GUSTS TO 14 MPH BY THIS AFTERNOON.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......8000 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 5 MPH.
VENTILATION INDEX...400 FAIR.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....46 TO 54.
MAX HUMIDITY........50 TO 60 PERCENT.
WIND (EYE LEVEL)....DOWN DRAINAGE WINDS 6 TO 10 MPH WITH GUSTS TO 14 MPH
                    BECOMING 1 TO 3 MPH AFTER MIDNIGHT.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....WEST AROUND 5 MPH.
VENTILATION INDEX...LESS THAN 100 POOR.

.MONDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....76 TO 83.
MIN HUMIDITY........18 TO 24 PERCENT.
WIND (EYE LEVEL)....UP SLOPE 2 TO 4 MPH IN THE MORNING BECOMING UP CANYON
                    7 TO 12 MPH WITH GUSTS TO 15 MPH BY THE AFTERNOON
HAINES INDEX........4 LOW.
MIXING HEIGHT.......8000 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
VENTILATION INDEX...800 EXCELLENT.

$$
FORECASTER...REDMAN
REQUESTED BY...ESTHER GODSON
TYPE OF REQUEST...WILDFIRE
.TAG 20100815.RAINB.01/BOI