FNUS75 KBOI 080308
FWSBOI

SPOT FORECAST FOR RIDGE FIRE...USFS
NATIONAL WEATHER SERVICE BOISE ID
908 PM MDT WED AUG 7 2013

FORECAST IS BASED ON REQUEST TIME OF 2034 MDT ON AUGUST 07.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM NOON THURSDAY TO 6 AM MDT
FRIDAY...

.DISCUSSION...
THE CORES OF THUNDERSTORMS WILL REMAIN SOUTH OF THE RIDGE FIRE
BEFORE DECAYING BY MIDNIGHT. THIS MEANS NO PRECIPITATION BUT A
CHANCE OF ERRATIC WINDS TO 25 MPH UNTIL MIDNIGHT FOLLOWED BY
NORTHEAST WINDS OVERNIGHT. SOUTH FLOW AHEAD OF AN UPPER LOW WEST
OF THE RIDGE FIRE WILL CONTINUE TO DRAW UP MOISTURE FROM THE
SOUTH. THIS WILL COMBINE WITH DAYTIME HEATING THURSDAY FOR
SCATTERED THUNDERSTORMS WITH WINDS TO 50 MPH POSSIBLE. UP TO ONE
THIRD OF AN INCH OF RAIN IS POSSIBLE DIRECTLY UNDER STORM CORES. A
DRY SURGE IS POSSIBLE ON FRIDAY FOR DRY AND VERY WARM CONDITIONS.
THE LOW WILL SHIFT CLOSER TO THE RIDGE FIRE THIS WEEKEND FOR A
A SLIGHT CHANCE OF THUNDERSTORMS.

.REST OF TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS. ISOLATED
                    THUNDERSTORMS MAINLY BEFORE MIDNIGHT.
                    CHANCE OF PRECIPITATION 20 PERCENT.
MIN TEMPERATURE.....52 TO 58.
MAX HUMIDITY........35 TO 41 PERCENT.
WIND - EYE LEVEL....BECOMING NORTHEAST 3 TO 6 MPH. GUSTS AROUND 20
                    MPH POSSIBLE FROM ANY DIRECTION.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WIND......EAST AROUND 15 MPH.
VENTILATION INDEX...150 POOR.

.THURSDAY...

SKY/WEATHER.........PARTLY SUNNY. A CHANCE OF SHOWERS AND
                    THUNDERSTORMS...MAINLY IN THE AFTERNOON. CHANCE
                    OF PRECIPITATION 40 PERCENT. THUNDERSTORMS MAY
                    HAVE WIND GUSTS OF 50 MPH.
MAX TEMPERATURE.....70 TO 76.
MIN HUMIDITY........19 TO 25 PERCENT.
WIND - EYE LEVEL....LIGHT UPSLOPE/UPVALLEY IN THE MORNING BECOMING
                    SOUTH 3 TO 6 MPH WITH AFTERNOON GUSTS TO 14 MPH.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......7000 FT AGL.
TRANSPORT WIND......SOUTHEAST AROUND 8 MPH.
VENTILATION INDEX...560 GOOD.

$$
FORECASTER...MILLS/SMITH
REQUESTED BY...COLIN GOOD
TYPE OF REQUEST...WILDFIRE
.TAG 20130807.RIDGE.01/BOI