FNUS73 KBIS 011439
FWSBIS

SPOT FORECAST FOR HB BLACK LINE...USFWS
NATIONAL WEATHER SERVICE BISMARCK ND
939 AM CDT TUE SEP 1 2009

FORECAST IS BASED ON IGNITION TIME OF 1130 CDT ON SEPTEMBER 01.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A WEAK LOW PRESSURE SYSTEM IN NORTHWEST SOUTH DAKOTA
COMBINED WITH HIGH PRESSURE OVER ILLINOIS WILL KEEP SURFACE WINDS
SOUTH TO SOUTHEAST THROUGH THE DAY. SIMILAR TO YESTERDAY DAYTIME
HEATING WILL ERODE A SURFACE INVERSION ALLOWING STRONGER WINDS
ALOFT TO MIX DOWN TO THE SURFACE. THE WINDS SHOULD INCREASE TO
15 TO 20 MPH...WITH A FEW GUSTS TO 25 MPH.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........76 AT IGNITION...MAX 83.
RH..................51 PERCENT AT IGNITION...MIN 36 PERCENT.
WIND (20 FT)........WINDS SOUTH TO SOUTHEAST 15 TO 20 MPH.
HAINES INDEX........4 LOW.
SMOKE DISPERSAL.....GOOD.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
TEMPERATURE.........MIN 55.
RH..................MAX 83 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 10 MPH.
SMOKE DISPERSAL.....POOR.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........MAX 84.
RH..................MIN 34 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS AROUND 5 MPH SHIFTING TO THE
                    EAST UP TO 5 MPH IN THE LATE MORNING AND
                    AFTERNOON.
HAINES INDEX........4 LOW.
SMOKE DISPERSAL.....FAIR.

$$
FORECASTER...WALKER
REQUESTED BY...COLLEEN GRAUE
TYPE OF REQUEST...PRESCRIBED
.TAG 20090901.HBBLA.01/BIS