Suppression Forecast
Issued by NWS Boise, ID

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000
FNUS75 KBOI 231627
FWSBOI

SPOT FORECAST FOR WEST MT  NORTH UNIT 5...PAYETTE NF
NATIONAL WEATHER SERVICE BOISE ID
1027 AM MDT TUE SEP 23 2014

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON SEPTEMBER 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...GUSTY AND ERRATIC WINDS POSSIBLE THROUGH THE AFTERNOON...

.DISCUSSION...
AN UPPER LOW OFF THE COAST WILL AMPLIFY THE UPPER RIDGE ACROSS
THE REGION BRINGING ABOVE NORMAL TEMPERATURES AND LOW AFTERNOON
RH. WHATS MORE OF A CONCERN WILL BE THE STRONG WINDS MOVING OVER
THE HIGHER RIDGES NEAR THE RX BURN AREA. DUE TO THE WARM
AIRMASS...THE FIRE REGION COULD SEE ERRATIC WINDS DUE TO LEE SIDE
EDDYING FROM THE RIDGELINE SOUTHWEST OF THE FIRE. THE LOWER
ELEVATIONS SHOULD STILL SEE TYPICAL TERRAIN DRIVEN WINDS BUT WINDS
ALOFT COULD ERRATIC. A COLD FRONT WILL MOVE INTO THE REGION EARLY
FRIDAY MORNING BRINGING MUCH COOLER AND POTENTIALLY WET CONDITIONS
INTO THE WEEKEND.

.WEDNESDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....78 TO 82.
1000 HRS..50 TO 54     RH NEAR 60  WIND UPSLOPE/UPVALLEY 5 TO 8 MPH
1200 HRS..NEAR 70      RH NEAR 40      UPVALLEY 7 TO 9 WITH GUST TO 15 MPH
1400 HRS..AROUND 76    RH NEAR 29      SOUTH TO SE 7 TO 9 WITH GUST TO 18 MPH
1600 HRS..NEAR 78      RH NEAR 22      SOUTH TO SE 7 TO 9 WITH GUST TO 18 MPH
1800 HRS..NEAR 76      RH NEAR 22      SOUTH TO SE 7 TO 9 WITH GUSTS TO 18 MPH

WINDS OVER THE RIDGES TO THE SOUTHWEST OF THE FIRE WILL BE SOUTH TO SOUTHWEST
20 TO 30 MPH THROUGH THE BURNING PERIOD.

MIN HUMIDITY........AROUND 20 PERCENT.

HAINES INDEX........4 LOW.
MIXING HEIGHT.......7000 FT AGL.
TRANSPORT WIND......SOUTH TO SOUTHWEST AROUND 25 MPH.
VENTILATION INDEX...1750 EXCELLENT.

$$
FORECASTER...REDMAN
REQUESTED BY...JIM BISHOP
TYPE OF REQUEST...PRESCRIBED
.TAG 20140924.WESTM.01/BOI


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