FNUS75 KBOI 111509
FWSBOI

SPOT FORECAST FOR HYATT...PAYETTE NF
NATIONAL WEATHER SERVICE BOISE ID
909 AM MDT SAT AUG 11 2012

FORECAST IS BASED ON REQUEST TIME OF 0837 MDT ON AUGUST 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...DRY AND MODERATELY UNSTABLE WITH A WARMING TREND...

.DISCUSSION...FOLLOWING YESTERDAYS STORM SYSTEM AN UPPER LEVEL RIDGE
BEGIN TO BUILD INTO THE AREA FROM THE SOUTH TODAY AND STRENGTHEN TOMORROW.
THIS WILL BRING DRY CONDITIONS AND INCREASING TEMPERATURES TO THE HYATT FIRE.
IN ADDITION...IT WILL BE VERY DRY ALOFT WITH MODERATELY UNSTABLE CONDITIONS
FOR ELEVATED HAINES INDICES OF 5 TOMORROW AFTERNOON. AS FOR WINDS THE HYATT
FIRE WILL PRIMARILY BE INFLUENCED BY THE HAZARD CREEK CANYON TOPOGRAPHY DURING
THE DAYTIME BURNING PERIOD WITH UPSLOPE WEST WINDS BECOMING UP CANYON WEST
OR EVEN SOUTHWEST BY LATE THIS AFTERNOON. TONIGHT LOOK FOR DRAINAGE WINDS
DOWNSLOPE AFTER SUNSET BECOMING DOWNCANYON FROM THE NORTHEAST OVERNIGHT.

.TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....86 TO 89.
MIN HUMIDITY........15 TO 18 PERCENT.
WIND - EYE LEVEL....NORTHWEST 5 MPH.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WIND......NORTHEAST AROUND 10 MPH.
VENTILATION INDEX...550 GOOD.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....53 TO 58.
MAX HUMIDITY........50 TO 55 PERCENT.
WIND - EYE LEVEL....NORTH TO NORTHEAST 5 TO 10 MPH.
HAINES INDEX........5 MODERATE.
MIXING HEIGHT.......200 FT AGL.
TRANSPORT WIND......NORTHEAST AROUND 10 MPH.
VENTILATION INDEX...10 POOR.

.SUNDAY...

SKY/WEATHER.........SUNNY AND WARMER.
MAX TEMPERATURE.....88 TO 92.
MIN HUMIDITY........12 TO 16 PERCENT.
WIND - EYE LEVEL....WEST 5 TO 8 MPH.
HAINES INDEX........5 MODERATE.
MIXING HEIGHT.......6500 FT AGL.
TRANSPORT WIND......WEST 5 TO 10 MPH.
VENTILATION INDEX...325 FAIR.

$$
FORECASTER...DECKER
REQUESTED BY...PAYETTE NATIONAL FOREST
TYPE OF REQUEST...WILDFIRE
.TAG 20120811.HYATT.01/BOI