FNUS73 KBIS 212135
FWSBIS

SPOT FORECAST FOR FORT YATES-SIOUX VILLAGE...BIA STANDING ROCK AGENCY
NATIONAL WEATHER SERVICE BISMARCK ND
435 PM CDT FRI AUG 21 2009

FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON AUGUST 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

AN UPPER LEVEL RIDGE WILL BUILD ACROSS NORTH DAKOTA ON
SATURDAY...BRINGING WARM TEMPERATES AND DRY WEATHER. HIGH
TEMPERATURES ON SATURDAY WILL BE IN THE MID TO UPPER 80S
ACROSS SOUTH CENTRAL NORTH DAKOTA...WITH DAYTIME MINIMUM
RELATIVE HUMIDITY VALUES BETWEEN 25 AND 30 PERCENT. WINDS ON
SATURDAY WILL INCREASE DURING THE LATE MORNING AND INTO THE
AFTERNOON FROM THE SOUTH AT 15 TO 20 MPH. A SURFACE BASED
INVERSION AT SUNRISE WILL LIFT TO 4 TO 5 THOUSAND FEET BY THE
AFTERNOON... WITH GOOD LOW LEVEL SMOKE DISPERSION. HIGH
TEMPERATURES IN THE UPPER 80S TO LOWER 90S ARE FORECAST ON
SUNDAY...WITH DAY TIME MINIMUM RELATIVE HUMIDITY VALUES NEAR
30 TO 35 PERCENT...AND SOUTHEAST WINDS AT 10 TO 15 MPH.
.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........64 AT IGNITION...MAX 84.
RH..................52 PERCENT AT IGNITION...MIN 31 PERCENT.
WIND (20 FT)........WINDS SOUTHEAST AT 15 MPH AT
                    IGNITION...OTHERWISE SOUTHEAST WINDS AROUND 10
                    MPH INCREASING TO SOUTH AROUND 20 MPH.
HAINES INDEX........4 LOW AT IGNITION...MAX 4.
SMOKE DISPERSAL.....GOOD.
LAL.................1.
CWR.................0 PERCENT.

$$
FORECASTER...PJA
REQUESTED BY...JAMES CONDON
TYPE OF REQUEST...PRESCRIBED
.TAG 20090822.FORTY.01/BIS