FNUS75 KBOI 052241
FWSBOI

SPOT FORECAST FOR THUNDER CITY FIRE...USFS
NATIONAL WEATHER SERVICE BOISE ID
441 PM MDT MON AUG 5 2013

FORECAST IS BASED ON REQUEST TIME OF 1558 MDT ON AUGUST 05.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...ISOLATED THUNDERSTORMS WITH LITTLE TO NO RAINFALL AND GUSTY
ERRATIC OUTFLOW WINDS TO 30 MPH UNTIL 8 PM TONIGHT...
...WARM AND DRY THIS WEEK WITH HAINES 6 POSSIBLE TUESDAY AND WEDNESDAY...
...INCREASING THREAT OF THUNDERSTORMS LATE WEDNESDAY THROUGH THE
WEEKEND...

.DISCUSSION...
CUMULUS FIELD EXTENDED FROM HELLS CANYON THROUGH YELLOWPINE NORTH
THIS AFTERNOON. THERE IS JET CIRRUS ABOVE IT. EXPECT CLOUDS TO
THICKEN AND FORM ISOLATED SHOWERS AND THUNDERSTORMS...THROUGH 8 PM
MDT. JET WILL SUPPORT GUSTY WINDS TO 26 MPH...DECREASING TO 15 MPH
AFTER MIDNIGHT. THE NORTH FLANK OF THE UPPER LEVEL RIDGE WILL
REBUILD OVER THE PAYETTE FOREST TUESDAY AND WEDNESDAY...WITH
HAINES 6 POSSIBLE. LATE WEEK THROUGH THE WEEKEND SOUTH FLOW ALOFT
AHEAD OF AN APPROACHING UPPER LEVEL LOW PUSHING INLAND WILL BRING
INSTABILITY MOISTURE AND LIFT AT TIMES RESULTING IN AN INCREASED
THREAT OF THUNDERSTORMS.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF
                    THUNDERSTORMS WITH GUSTY WINDS AND LIGHTNING
                    BUT LITTLE OR NO RAIN THIS EVENING...THEN
                    CLEARING.
MIN TEMPERATURE.....47 TO 49.
MAX HUMIDITY........60 TO 70 PERCENT.
WIND - EYE LEVEL....NORTHWEST 5 TO 9 MPH. GUSTS UP TO 26 MPH THIS
                    EVENING AND UP TO 15 MPH AFTER MIDNIGHT.
HAINES INDEX........3 VERY LOW.
LAL.................2 UNTIL 8 PM THEN LAL...1.
CWR /0.10 INCH/.....0 PERCENT.
MIXING HEIGHT.......1000 FT AGL. TRANSPORT WIND......NORTH AROUND 5 MPH.
VENTILATION INDEX...50 POOR.

.TUESDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....74 TO 76.
MIN HUMIDITY........19 TO 25 PERCENT.
WIND - EYE LEVEL....NORTHWEST 5 TO 9 MPH. GUSTS UP TO 16 MPH IN THE
                    AFTERNOON.
HAINES INDEX........3 VERY LOW.
LAL.................1.
CWR /0.10 INCH/.....0 PERCENT.
MIXING HEIGHT.......8000 FT AGL.
TRANSPORT WIND......WEST AROUND 10 MPH.
VENTILATION INDEX...800 EXCELLENT.

.TUESDAY NIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....47 TO 49.
MAX HUMIDITY........50 TO 59 PERCENT.
WIND - EYE LEVEL....NORTHWEST 3 TO 8 MPH WITH GUSTS UP TO 16 MPH IN THE
                    EVENING THEN LIGHT DOWN SLOPE/DOWN VALLEY AFTER
                    MIDNIGHT.
HAINES INDEX........4 LOW.
LAL.................1.
CWR /0.10 INCH/.....0 PERCENT.
MIXING HEIGHT.......700 FT AGL.
TRANSPORT WIND......NORTHWEST AROUND 5 MPH.
VENTILATION INDEX...35 POOR.

$$
FORECASTER...MILLS
REQUESTED BY...CHRIS CHURCH
TYPE OF REQUEST...WILDFIRE
.TAG 20130805.THUND.01/BOI