FNUS75 KBOI 201851
FWSBOI

SPOT FORECAST FOR PADDY FLAT RX...PAYETTE N.F.
NATIONAL WEATHER SERVICE BOISE ID
1251 PM MDT TUE OCT 20 2009

FORECAST IS BASED ON IGNITION TIME OF 1315 MDT ON OCTOBER 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...DRIER WEDNESDAY AFTERNOON THROUGH FRIDAY...

.DISCUSSION...A RIDGE OF HIGH PRESSURE IS BUILDING OVER THE BURN SITE
STARTING TODAY AND WILL LAST THROUGH FRIDAY.  AFTERNOON MINIMUM
HUMIDIFIES WILL RANGE FROM 35 TO 45 PERCENT WHILE NIGHTTIME MAXIMUM
HUMIDIFIES WILL BE BETWEEN 80 AND 90 PERCENT WITH PATCHY VALLEY FOG.
THE NEXT SIGNIFICANT WEATHER PRODUCER ARRIVES SUNDAY WITH MOISTURE
AND COOLER TEMPERATURES SPREADING OVER THE BURN AREA. NIGHTTIME
VENTILATION WILL BECOME POOR THIS WEEK AS A SURFACE INVERSION
DEVELOPS UNDER HIGH PRESSURE.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY.
MAX TEMPERATURE.....49 TO 55.
MIN HUMIDITY........37 TO 52 PERCENT AROUND 3PM.
WIND - EYE LEVEL....SOUTHWEST 3 TO 5 MPH.
HAINES INDEX........2 VERY LOW.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WIND......NORTHWEST AROUND 5 MPH.
VENTILATION INDEX...275 FAIR.

.TONIGHT...

SKY/WEATHER.........PARTLY Y CLOUDY.
MIN TEMPERATURE.....29 TO 34.
MAX HUMIDITY........85 TO 92 PERCENT.
WIND - EYE LEVEL....EAST UP TO 6 MPH.
HAINES INDEX........2 VERY LOW.
MIXING HEIGHT.......900 FT AGL.
TRANSPORT WIND......SOUTHEAST AROUND 5 MPH.
VENTILATION INDEX...45 POOR.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY...WITH A FEW AFTERNOON CUMULUS.
MAX TEMPERATURE.....45 TO 52.
MIN HUMIDITY........46 TO 58 PERCENT.
WIND - EYE LEVEL....SOUTHEAST UP TO 6 MPH.
HAINES INDEX........2 VERY LOW.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WIND......SOUTH AROUND 10 MPH.
VENTILATION INDEX...300 FAIR.

$$
FORECASTER...SKARI
REQUESTED BY...DISPATCH
TYPE OF REQUEST...PRESCRIBED
.TAG 20091020.PADDY.01/BOI