FNUS73 KBIS 071323
FWSBIS

SPOT FORECAST FOR HB-43...USFWS
NATIONAL WEATHER SERVICE BISMARCK ND
823 AM CDT THU OCT 7 2010

FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON OCTOBER 07.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

HIGH PRESSURE OVER THE EASTERN DAKOTAS WILL MOVE EAST TODAY AS A
TROUGH OF LOW PRESSURE MOVES INTO EASTERN MONTANA. THIS WILL
PRODUCE SOUTHERLY WINDS OVER THE PRESCRIBED BURN AREA TODAY. WINDS
WILL TRANSITION FROM SOUTH SOUTHEAST THIS MORNING...THEN SHIFT TO
A SOUTH SOUTHWESTERLY DIRECTION THIS AFTERNOON.

THE LOW LEVEL INVERSION WILL START TO LIFT 10-11 AM CDT...THEN MIX
OUT EARLY THIS AFTERNOON. HOWEVER...THE MIXING HEIGHT WILL REMAIN
RELATIVELY LOW...AROUND 2000 FEET ABOVE GROUND LEVEL THROUGH THE
MID AFTERNOON...THEN MIX OUT TO AROUND 3000 TO 3500 FEET ABOVE
GROUND LEVEL BY THE LATE AFTERNOON.


.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........60 AT IGNITION...MAX 81.
RH..................55 PERCENT AT IGNITION...MIN 32 PERCENT.
WIND (20 FT)........WINDS SOUTH AT 10 MPH AT IGNITION...OTHERWISE
                    SOUTH WINDS 5 TO 10 MPH INCREASING TO 10 TO 15
                    MPH IN THE AFTERNOON.
HAINES INDEX........4 LOW AT IGNITION...MAX 4.
SMOKE DISPERSAL.....FAIR.
LAL.................1.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
TEMPERATURE.........MIN 50.
RH..................MAX 74 PERCENT.
WIND (20 FT)........SOUTH WINDS AROUND 10 MPH BECOMING WEST IN THE
                    LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....POOR.
LAL.................1.

.FRIDAY...

SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........MAX 81.
RH..................MIN 36 PERCENT.
WIND (20 FT)........WEST WINDS UP TO 5 MPH SHIFTING TO THE
                    SOUTHEAST AROUND 5 MPH EARLY IN THE
                    AFTERNOON...THEN SHIFTING TO THE NORTHEAST LATE
                    IN THE AFTERNOON.
HAINES INDEX........6 HIGH.
SMOKE DISPERSAL.....FAIR.
LAL.................2.

$$
FORECASTER...HEINERT
REQUESTED BY...CALVIN MOLDENHAUER
TYPE OF REQUEST...PRESCRIBED
.TAG 20101007.HB43_.01/BIS