FNUS73 KBIS 111440
FWSBIS

SPOT FORECAST FOR NORTH   SOUTH COMMUNITY...US FOREST SERVICE
NATIONAL WEATHER SERVICE BISMARCK ND
940 AM CDT SUN APR 11 2010

FORECAST IS BASED ON IGNITION TIME OF 0837 MDT ON APRIL 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

LOW PRESSURE DEVELOPING OVER NORTHEAST WYOMING WILL INTENSIFY THE
WARM FRONT STRETCHING EASTWARD ACROSS CENTRAL SOUTH DAKOTA THIS
MORNING. THIS WILL HELP TO STRENGTHEN EAST-NORTHEASTERLY WINDS BY
NOON OVER THE SITE. DEWPOINTS SHOULD RISE STEADILY TODAY AS MOIST
AIR ALOFT MIXES DOWN TO THE SURFACE...THOUGH THE WARM FRONT SHOULD
STAY JUST SOUTH OF THE AREA THROUGH TUESDAY MORNING. THAT MEANS
THAT ANY WIND SHIFTS IN DIRECTION WILL MOST LIKELY COME FROM RAIN
SHOWERS OR THUNDERSTORMS THAT FORM NORTH OF THE FRONT THIS
EVENING/TONIGHT. SHOULD THE WARM FRONT MOVE ACROSS THE BORDER...
WINDS WOULD SHIFT TO THE SOUTH AT AROUND 20 MPH.

THERE IS LITTLE CHANCE OF RAIN BEFORE SUNSET. RAIN CHANCES REMAIN
FOR THE NEXT FEW DAYS...BUT THE BEST CHANCE MEASURABLE RAIN WILL
BE TONIGHT AND MONDAY NIGHT THROUGH TUESDAY.

1000...EAST-NORTHEAST WINDS AT 14 MPH GUSTING TO 22 MPH. TEMP...42.
    RELATIVE HUMIDITY...54 PERCENT.
1200...EAST-NORTHEAST WINDS AT 15 MPH GUSTING TO 23 MPH. TEMP...51.
    RELATIVE HUMIDITY...45 PERCENT.
1400...EAST WINDS AT 17 MPH GUSTING TO 24 MPH. TEMP...58.
    RELATIVE HUMIDITY...39 PERCENT.
1500...EAST WINDS AT 17 MPH GUSTING TO 26 MPH. TEMP...61.
    RELATIVE HUMIDITY...35 PERCENT.


.TODAY...

SKY/WEATHER.........PARTLY SUNNY.
                    TEMPERATURE.........40 AT IGNITION...MAX 61.
                    MIN HUMIDITY........64 PERCENT AT IGNITION...MIN 33 PERCENT.
WIND (20 FT)........WINDS EAST AT 15 MPH AT IGNITION...OTHERWISE
                    EAST-NORTHEAST WINDS AROUND 10
                    MPH INCREASING TO AROUND 20 MPH LATE IN THE
                    MORNING...THEN INCREASING TO EAST WITH GUSTS
                    TO 25 MPH BEFORE DECREASING TO AROUND 15 MPH
                    LATE IN THE AFTERNOON OR EARLY THIS EVENING.
HAINES INDEX........3 VERY LOW AT IGNITION...MAX 3.
SMOKE DISPERSAL.....EXCELLENT.
LAL.................1.
CWR.................0 PERCENT.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS.
MIN TEMPERATURE.....42.
MAX HUMIDITY........76 PERCENT.
WIND (20 FT)........EAST WINDS 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR.
LAL.................2.
CWR.................0 PERCENT.

.MONDAY...

SKY/WEATHER.........MOSTLY CLOUDY.
MAX TEMPERATURE.....68.
MIN HUMIDITY........47 PERCENT.
WIND (20 FT)........BREEZY. EAST WINDS 10 TO 15 MPH INCREASING TO
                    AROUND 25 MPH.
HAINES INDEX........2 VERY LOW.
SMOKE DISPERSAL.....GOOD.
LAL.................2.
CWR.................0 PERCENT.

$$
FORECASTER...SCHECK
REQUESTED BY...OSCAR KNUDTSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20100411.NORTH.01/BIS