FNUS75 KMSO 302252
FWSMSO

SPOT FORECAST FOR HOLLAND 3
NATIONAL WEATHER SERVICE MISSOULA MT
452 PM MDT THU SEP 30 2010

FORECAST IS BASED ON IGNITION TIME OF 1300 MDT ON OCTOBER 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

HIGH PRESSURE WILL BE THE DOMINANT WEATHER FEATURE PRESENT OVER THE
BURN AREA THROUGH LATE SATURDAY. A SOMEWHAT STRONG SURFACE PRESSURE
GRADIENT ACROSS THE CONTINENTAL DIVIDE WILL MAINTAIN EAST AND
NORTHEASTERLY SURFACE WINDS THROUGH EARLY FRIDAY AFTERNOON.
THEREAFTER...LOW LEVEL WINDS WILL BECOME FAIRLY WEAK...WITH THE
CENTER OF THE HIGH PRESSURE DIRECTLY OVER THE NORTHERN ROCKIES.
RIDGETOP WINDS WILL BE STRONGER FROM THE WEST. THE LOWER PORTION OF
THE PROPOSED BURN MAY BE CLOSE TO OR WITHIN AN INVERSION
LAYER...WHICH COULD TRAP A FAIR AMOUNT OF SMOKE IN THE ADJACENT
VALLEY.

.FRIDAY...

TEMPERATURE.........MAX 67 AT 7000 FEET.
RH..................MIN 28 PERCENT.
WIND (20 FT)........EAST WINDS AROUND 9 MPH AND GUSTY BECOMING
                    SOUTHWEST AROUND 5 MPH IN THE LATE MORNING AND
                    AFTERNOON.
MIXING HEIGHT.......1400 FT AGL.
MIXING WINDS........SOUTH 10 MPH.

.FRIDAY NIGHT...

TEMPERATURE.........7000 FEET: MIN 52.
RH..................7000 FEET: MAX 66 PERCENT.
WIND (20 FT)........VARIABLE 2-4 MPH.
MIXING HEIGHT.......200 FT AGL.
MIXING WINDS........SOUTH 5 MPH.

.SATURDAY...

TEMPERATURE.........BOTTOM: 73 AT IGNITION...MAX 74-79
                    TOP: 61 AT IGNITION...MAX 62-67.
RH..................BOTTOM: 38 AT IGNITION...MAX 31-36 PERCENT
                    TOP: 45 PERCENT AT IGNITION...MIN 35-40 PERCENT.
WIND (20 FT)........WINDS WEST AT 5 MPH AT IGNITION...OTHERWISE
                    WEST WINDS AROUND 5 MPH.
MIXING HEIGHT.......1500 FT AGL AT IGNITION...OTHERWISE 2000 FT
                    AGL.
MIXING WINDS........SOUTHWEST 15 MPH.

$$
FORECASTER...ZUMPFE
REQUESTED BY...BRAD GILLESPIE
TYPE OF REQUEST...PRESCRIBED
.TAG 20101002.HOLLA.01/MSO