FNUS75 KBOI 172328
FWSBOI

SPOT FORECAST FOR THUNDER CITY FIRE...USFS
NATIONAL WEATHER SERVICE BOISE ID
528 PM MDT SAT AUG 17 2013

FORECAST IS BASED ON REQUEST TIME OF 1647 MDT ON AUGUST 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...DRY WESTERLY FLOW SUNDAY AND MONDAY...
...SLIGHT CHANCE OF THUNDERSTORMS MIDWEEK...

.DISCUSSION...
A DRY STABLE WESTERLY FLOW IS EXPECTED SUNDAY AND MONDAY. EXPECT
THE INVERSION WILL BREAK BETWEEN 1200 AND 1300 ON SUNDAY. MOISTURE
AND THUNDERSTORMS COULD REACH THE DISTRICTS AS EARLY AS TUESDAY
AHEAD OF UPPER LEVEL LOW PRESSURE SYSTEM. THE BEST CHANCE FOR
THUNDERSTORMS LOOKS TO BE THURSDAY.

.SUNDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....70 TO 74.
MIN HUMIDITY........16 TO 21 PERCENT.
WIND - EYE LEVEL....RIDGES...SOUTHWEST 3 TO 6 MPH IN THE
                    MORNING...SHIFTING TO THE NORTHWEST 3 TO 7 MPH
                    WITH GUSTS TO 14 MPH IN THE AFTERNOON.
                    VALLEYS...LIGHT MORNING DOWNSLOPE FOLLOWED BY
                    UPSLOPE 3 TO 6 MPH IN THE AFTERNOON.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......8000 FT AGL.
TRANSPORT WIND......WEST AROUND 10 MPH.
VENTILATION INDEX...800 EXCELLENT.

.SUNDAY NIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....50 TO 53.
MAX HUMIDITY........45 TO 55 PERCENT.
WIND - EYE LEVEL....RIDGES...NORTHWEST 3 TO 6 MPH.
                    VALLEYS...LIGHT DOWNSLOPE 3 TO 6 MPH.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WIND......SOUTH AROUND 5 MPH.
VENTILATION INDEX...25 POOR.

.MONDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....70 TO 74.
MIN HUMIDITY........14 TO 19 PERCENT.
WIND - EYE LEVEL....RIDGES...SOUTHWEST 3 TO 6 MPH IN THE MORNING
                    BECOMING NORTHWEST 4 TO 7 MPH WITH GUSTS TO 14
                    MPH IN THE AFTERNOON.
                    VALLEYS...LIGHT MORNING DOWNSLOPE FOLLOWED BY
                    UPSLOPE 3 TO 6 MPH IN THE AFTERNOON.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......8000 FT AGL.
TRANSPORT WIND......WEST AROUND 10 MPH.
VENTILATION INDEX...800 EXCELLENT.

.OUTLOOK TUESDAY THROUGH THURSDAY...A SLIGHT CHANCE OF AFTERNOON
AND EVENING SHOWERS AND THUNDERSTORMS TUESDAY AND WEDNESDAY...
INCREASING TO A CHANCE ON THURSDAY. RIDGETOP WINDS MAINLY LIGHT
SOUTHWEST OR WEST AT NIGHT AND MORNING HOURS...THEN MAINLY WEST-
NORTHWEST 4 TO 8 WITH GUSTS TO 15 MPH IN THE AFTERNOONS. VALLEYS
MAINLY LIGHT UPSLOPE/DOWNSLOPE WINDS. NOTE THAT THUNDERSTORMS
IMPLY GUSTY AND ERRATIC WINDS.

$$
FORECASTER...WOJCIK
REQUESTED BY...KIM SOPER
TYPE OF REQUEST...WILDFIRE
.TAG 20130817.THUND.01/BOI