FNUS75 KBOI 211655
FWSBOI

SPOT FORECAST FOR RAINBOW...PAYETTE NF
NATIONAL WEATHER SERVICE BOISE ID
1055 AM MDT SAT AUG 21 2010

FORECAST IS BASED ON REQUEST TIME OF 1027 MDT ON AUGUST 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...STRONG AND GUSTY WINDS TODAY...
...MUCH COOLER SUNDAY AND MONDAY...

.DISCUSSION...
A DRY SLOT OF AIR IS EXPECTED TO MOVE OVER THE FIRE AREA TODAY. THIS WILL
BRING LOWER DEWPOINTS AND THEREFORE LOWER AFTERNOON HUMIDITIES TO THE FIRE
LOCATION. A COLD FRONT OVER THE FAR NORTHERN PORTION OF THE IDAHO PANHANDLE
EXTENDING SOUTHEASTWARD ACROSS CENTRAL OREGON IS EXPECTED TO MOVE
OVER THE FIRE AREA AFTER MIDNIGHT. THERE IS A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS THIS AFTERNOON AND SUNDAY. THIS WILL USHER IN MUCH COLDER
AIR FOR SUNDAY AND MONDAY. STRONG SOUTHWEST FLOW TODAY WILL SHIFT TO
THE NORTHWEST FOR SUNDAY AND MONDAY. A RAPID WARM UP IS ONCE AGAIN
EXPECTED TUESDAY THROUGH FRIDAY.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY THIS MORNING...INCREASING CLOUDS
                    BY THIS AFTERNOON WITH A SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....70 TO 75.
MIN HUMIDITY........16 TO 22 PERCENT.
WIND - EYE LEVEL....SOUTH TO SOUTHEAST 3 TO 5 MPH THIS MORNING INCREASING
                    TO 5 TO 8 MPH THIS AFTERNOON WITH GUSTS TO 25 MPH THIS
                    AFTERNOON.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WIND......SOUTH AROUND 25 MPH.
VENTILATION INDEX...1375 EXCELLENT.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY...THEN BECOMING MOSTLY CLOUDY. A
                    SLIGHT CHANCE OF RAIN SHOWERS THROUGH THE
                    NIGHT. A SLIGHT CHANCE OF THUNDERSTORMS IN THE
                    EVENING.
MIN TEMPERATURE.....40 TO 45.
MAX HUMIDITY........62 TO 79 PERCENT.
WIND - EYE LEVEL....DOWN SLOPE WINDS 3 TO 5 MPH THEN BECOMING CALM BY MIDNIGHT.
                    EARLY EVENING GUSTS TO 25 MPH.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......600 FT AGL.
TRANSPORT WIND......NORTHWEST AROUND 5 MPH.
VENTILATION INDEX...30 POOR.

.SUNDAY...

SKY/WEATHER.........PARTLY SUNNY.
MAX TEMPERATURE.....53 TO 62.
MIN HUMIDITY........31 TO 40 PERCENT.
WIND - EYE LEVEL....LIGHT WIND TO 5 MPH IN THE MORNING BECOMING NORTH 4 TO 6 MPH
                    WITH GUSTS TO 12 MPH BY THE AFTERNOON.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......4500 FT AGL.
TRANSPORT WIND......WEST AROUND 10 MPH.
VENTILATION INDEX...450 FAIR.

$$
FORECASTER...REDMAN
REQUESTED BY...ESTHER GODSON
TYPE OF REQUEST...WILDFIRE
.TAG 20100821.RAINB.01/BOI