FNUS75 KBOI 021658
FWSBOI

SPOT FORECAST FOR SAMS PINE PRESCRIBED FIRE...BOISE NF
NATIONAL WEATHER SERVICE BOISE ID
1058 AM MDT THU MAY 2 2013

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON MAY 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...THUNDERSTORMS POSSIBLE SATURDAY...

.DISCUSSION...
AN UPPER DISTURBANCE ROTATING AROUND THE PERIPHERY OF THE RIDGE OFF THE
COAST IS EXPECTED TO DROP ALONG THE IDAHO/MONTANA BORDER AREA LATE FRIDAY.
THIS WILL BRING A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS NORTH OF
THE BURN UNIT. THIS LOW THEN SHIFTS BACK TO THE SOUTHWEST THROUGH
SATURDAY MORNING BRINGING A SLIGHT RISK OF SHOWERS AND THUNDERSTORMS
THROUGH THE DAY ON SATURDAY AND SUNDAY. NORTHERLY WINDS ALOFT CAN BE EXPECTED
TO SHIFT EAST TO SOUTHEAST SATURDAY ALONG WITH BECOMING STRONG AND GUSTY
BOTH SATURDAY AND SUNDAY.


.TODAY/FRIDAY/...

SKY/WEATHER.........MOSTLY SUNNY...BECOMING PARTLY CLOUDY LATE IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 65 VALLEYS AND UPPER 50S OVER THE RIDGES.
MIN HUMIDITY........NEAR 20 PERCENT LOWER ELEVATIONS TO 20 TO 25 PERCENT OVER
                    THE RIDGES.
WIND - EYE LEVEL....UPVALLEY 3 TO 5 MPH AND ERRATIC DUE TO NORTH TO NORTHWEST
                    RIDGELINE WINDS OF 7 TO 11 MPH WITH GUSTS TO 15 MPH IN THE
                    AFTERNOON.
MIXING HEIGHT.......7000 FT AGL.
TRANSPORT WIND......NORTH AROUND 15 MPH.
VENTILATION INDEX...1000 EXCELLENT.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY.
MIN TEMPERATURE.....30 TO 35.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WIND......NORTHEAST TO 10 MPH.
VENTILATION INDEX...50 POOR.

.SATURDAY...
SKY/WEATHER.........PARTLY SUNNY WITH A SLIGHT CHANCE OF RAIN
                    SHOWERS. A SLIGHT CHANCE OF THUNDERSTORMS IN
                    THE AFTERNOON. CHANCE OF PRECIPITATION 20
                    PERCENT.
MAX TEMPERATURE.....60 TO 65 VALLEYS AND MID 50S OVER THE RIDGES.
MIN HUMIDITY........24 TO 29 PERCENT.
WIND - EYE LEVEL....UPVALLEY 5 TO 8 MPH WITH RIDGELINE WINDS EAST 8 TO 14 MPH
                    WITH GUSTS TO 20 MPH.
MIXING HEIGHT.......5000 FT AGL.
TRANSPORT WIND......EAST 20 MPH.
VENTILATION INDEX...1000 EXCELLENT.

$$
FORECASTER...REDMAN
REQUESTED BY...PAUL SWENSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20130503.SAMSP.01/BOI