FNUS75 KBOI 251635
FWSBOI

SPOT FORECAST FOR ALKALI TUMBLEWEED...VALE BLM
NATIONAL WEATHER SERVICE BOISE ID
1035 AM MDT SAT APR 25 2009

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 25.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...DRY BUT WINDY AT TIMES THROUGH TONIGHT...

.DISCUSSION...
.AN UPPER LEVEL SYSTEM OVER SOUTHEAST OREGON WILL AID MIXING OF
STRONG WINDS THROUGH TONIGHT. DOWNSLOPE COMPONENT LOOKS TO KEEP
EYE LEVEL WIND GUSTS OF AT LEAST 11 MPH GOING ALL NIGHT. NORTH
WINDS LOOK TO DIMINISH SUNDAY AFTERNOON.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....61 - 62.
MIN HUMIDITY........17 TO 19 PERCENT.
WIND - EYE LEVEL....WEST 4 TO 6 MPH BECOMING NORTH 5 TO 9 MPH BY NOON.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......9500 FT AGL.
TRANSPORT WIND......NORTHWEST AROUND 10 MPH.
VENTILATION INDEX...950 EXCELLENT.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....41.
MAX HUMIDITY........52 PERCENT.
WIND - EYE LEVEL....NORTHWEST 7 WITH GUSTS AROUND 11 MPH.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......2200 FT AGL.
TRANSPORT WIND......NORTH AROUND 15 MPH.
VENTILATION INDEX...330 FAIR.

.SUNDAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....54 TO 56.
MIN HUMIDITY........25 TO 27 PERCENT.
WIND - EYE LEVEL....NORTH 7 WITH GUSTS AROUND 11 MPH...DIMINISHING
                    SOMEWHAT IN THE LATE AFTERNOON.
HAINES INDEX........2 VERY LOW.
MIXING HEIGHT.......11000 FT AGL.
TRANSPORT WIND......NORTHWEST AROUND 10 MPH.
VENTILATION INDEX...1100 EXCELLENT.

$$
FORECASTER...MILLS
REQUESTED BY...SIMMONS
TYPE OF REQUEST...PRESCRIBED
.TAG 20090425.ALKAL.01/BOI