FNUS75 KBOI 211418
FWSBOI

SPOT FORECAST FOR THUNDER CITY...PAYETTE NF
NATIONAL WEATHER SERVICE BOISE ID
818 AM MDT SUN JUL 21 2013

FORECAST IS BASED ON REQUEST TIME OF 0733 MDT ON JULY 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...WARM AND VERY DRY. SLIGHT INCREASE IN WINDS TOMORROW...

.DISCUSSION...WARM AND VERY DRY WEATHER WILL PERSIST AS HIGH PRESSURE
REMAINS ANCHORED OVER THE GREAT BASIN. WITH FIRE LOOKOUTS THIS MORNING REPORTING
HUMIDITY RECOVERIES IN THE TEENS TO LOWER 20S...CONDITIONS ARE EXTREMELY DRY.
THE MORNING INVERSION TODAY SHOULD BEGIN TO ERODE BY AROUND 1200 NOON BUT FULL
MIXING WILL BE REALIZED AROUND 1500 HOURS. EXPECT A WEAK UPPER LEVEL DISTURBANCE
TO RIDE OVER THE FIRE AREA TOMORROW MORNING AND EARLY AFTERNOON FROM THE
WEST. THIS WILL BRING A SLIGHT INCREASE IN WIND SPEEDS TOMORROW AS WELL
AS ASSISTING TO BREAK THE INVERSION EARLIER IN THE DAY DUE TO INSTABILITY.
NO THUNDERSTORMS ARE ANTICIPATED NEAR THE FIRE AREA UNTIL WEDNESDAY AFTERNOON.

.TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....MIDSLOPE 4500 TO 6000 FEET: 78 TO 84.
                    UPPER THIRD TO RIDGE 6000 TO 8500 FEET: 68 TO 78.

MIN HUMIDITY........MIDSLOPE 4500 TO 6000 FEET: 12 TO 16 PERCENT.
                    UPPER THIRD TO RIDGE 6000 TO 8500 FEET: 9 TO 15 PERCENT.
WIND - EYE LEVEL....WEST 6 TO 9 MPH. GUSTS UP TO 16 MPH THIS AFTERNOON.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......8000 FT AGL.
TRANSPORT WIND......WEST AROUND 15 MPH.
VENTILATION INDEX...1200 EXCELLENT.

.TONIGHT...

SKY/WEATHER.........CLEAR.
MIN TEMPERATURE.....51 TO 56.
MAX HUMIDITY........37 TO 47 PERCENT.
WIND - EYE LEVEL....WEST 4 TO 9 MPH. GUSTS UP TO 14 MPH IN THE
                    EVENING.
HAINES INDEX........5 MODERATE.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WIND......SOUTHWEST AROUND 5 MPH.
VENTILATION INDEX...25 POOR.

.MONDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....MIDSLOPE 4500 TO 6000 FEET: 78 TO 84.
                    UPPER THIRD TO RIDGE 6000 TO 8500 FEET: 68 TO 78.
MIN HUMIDITY........MIDSLOPE 4500 TO 6000 FEET: 12 TO 16 PERCENT.
                    UPPER THIRD TO RIDGE 6000 TO 8500 FEET: 9 TO 15 PERCENT
WIND - EYE LEVEL....WEST UP TO 12 MPH WITH GUSTS TO 15 TO 20 MPH.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......7000 FT AGL.
TRANSPORT WIND......WEST AROUND 20 MPH.
VENTILATION INDEX...1400 EXCELLENT.

$$
FORECASTER...DECKER
REQUESTED BY...DISPATCH
TYPE OF REQUEST...WILDFIRE
.TAG 20130721.THUND.01/BOI