FNUS75 KBOI 211711
FWSBOI

SPOT FORECAST FOR SIED CREEK SIMULATION FIRE...PAYETTE NF
NATIONAL WEATHER SERVICE BOISE ID
1111 AM MDT FRI MAY 21 2010

FORECAST IS BASED ON REQUEST TIME OF 1044 MDT ON MAY 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...COLD AND WET TODAY THROUGH THE WEEKEND...

.DISCUSSION...
COLD UPPER TROUGH MOVING INTO THE REGION TODAY FOR NUMEROUS SHOWERS
AND ISOLATED THUNDERSTORMS BY 3 PM MDT AT THE BURN SITE. RAIN WILL
CHANGE TO SNOW OVERNIGHT WITH 1 TO 2 INCHES OF SNOW POSSIBLE. WINDS
INCREASING FROM THE SOUTHWEST THIS AFTERNOON SHIFTING TO THE
NORTHWEST BY MIDNIGHT TONIGHT. RAIN AND SNOW SHOWERS WILL
CONTINUE ALL DAY SATURDAY.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS
                    AFTER NOON TODAY. A SLIGHT CHANCE OF THUNDERSTORMS
                    IN THE AFTERNOON.
MAX TEMPERATURE.....47 TO 50.
MIN HUMIDITY........45 TO 49 PERCENT.
WIND (EYE LEVEL)....DOWNSLOPE AROUND 4 MPH IN THE MORNING...SHIFTING
                    TO THE SOUTHWEST AROUND 8 MPH IN THE AFTERNOON.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......6000 FT AGL.
TRANSPORT WINDS.....WEST AROUND 10 MPH.
VENTILATION INDEX...600 GOOD.

.TONIGHT...

SKY/WEATHER.........CLOUDY. NUMEROUS RAIN SHOWERS....THEN NUMEROUS SNOW
                    SHOWERS AFTER MIDNIGHT.  WIDELY SCATTERED
                    THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....31 TO 34.
MAX HUMIDITY........95 TO 100 PERCENT.
WIND (EYE LEVEL)....NORTHWEST AROUND 9 MPH.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......1500 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 15 MPH.
VENTILATION INDEX...150 POOR.

.SATURDAY...

SKY/WEATHER.........CLOUDY. RAIN AND SNOW SHOWERS LIKELY THROUGH
                    THE DAY.
MAX TEMPERATURE.....40 TO 45.
MIN HUMIDITY........55 TO 65 PERCENT.
WIND (EYE LEVEL)....NORTHWEST AROUND 12 MPH WITH GUSTS UP TO 22 MPH.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH.
VENTILATION INDEX...375 FAIR.

$$
FORECASTER...SMITH
REQUESTED BY...SARAH HUMBACH
TYPE OF REQUEST...WILDFIRE
.TAG 20100521.SIEDC.01/BOI