FNUS73 KBIS 191155
FWSBIS

SPOT FORECAST FOR ARROWWOOD REFUGE...USFWS
NATIONAL WEATHER SERVICE BISMARCK ND
655 AM CDT THU MAY 19 2011

FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON MAY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...SURFACE LOW PRESSURE OVER COLORADO THIS MORNING IS
FORECAST TO CONTINUE TO DEVELOP AND STRENGTHEN AS IT MOVES
NORTHWARD. LIGHT EAST WINDS THIS MORNING ARE EXPECTED TO INCREASE
TODAY TO 20 TO 25 MPH OVER SOUTHERN NORTH DAKOTA AND TO 15 TO 20
MPH IN THE NORTH. SKIES SHOULD BE MOSTLY CLOUDY TODAY. LOOK FOR
INCREASING CHANCES OF RAIN SHOWERS IN THE SOUTHWEST...ESPECIALLY
DURING THE AFTERNOON. MINIMUM RELATIVE HUMIDITIES SHOULD RANGE
FROM AROUND 30 PERCENT ALONG THE CANADIAN BORDER TO NEAR 45
PERCENT ALONG THE SOUTH DAKOTA BORDER.

FRIDAY THROUGH THE WEEKEND IS EXPECTED TO BE CLOUDY WITH PERIODS
OF RAIN...HEAVY RAIN AT TIMES FRIDAY AND SATURDAY. THE LARGE UPPER
LEVEL LOW THAT HAS BEEN OVER THE ROCKIES THE PAST FEW DAYS IS
FORECAST TO MOVE EASTWARD INTO THE DAKOTAS BY SATURDAY NIGHT...AND
REMAIN OVER THE DAKOTAS THROUGH SUNDAY BEFORE MOVING EASTWARD
SUNDAY NIGHT. IT IS POSSIBLE THAT SOME AREAS MAY RECEIVE 1 TO 2
INCHES OF RAIN THROUGH THE WEEKEND.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........61 AT IGNITION...MAX 70.
RH..................46 PERCENT AT IGNITION...MIN 37 PERCENT.
WIND (20 FT)........WINDS EAST AT 10 MPH AT IGNITION...OTHERWISE
                    EAST WINDS INCREASING TO AROUND 20 MPH THIS
                    AFTERNOON.
HAINES INDEX........4 LOW AT IGNITION...MAX 4.
SMOKE DISPERSAL.....EXCELLENT.
LAL.................1.
CWR.................0 PERCENT.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS LIKELY AFTER
                    MIDNIGHT.
TEMPERATURE.........MIN 53.
RH..................MAX 86 PERCENT.
WIND (20 FT)........EAST WINDS AROUND 20 MPH DECREASING TO 10 TO 15
                    MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....POOR.
LAL.................1.
CWR.................0 PERCENT.

.FRIDAY...

SKY/WEATHER.........CLOUDY. RAIN SHOWERS THROUGH THE DAY.
TEMPERATURE.........MAX 63.
RH..................MIN 78 PERCENT.
WIND (20 FT)........BREEZY. EAST WINDS AROUND 20 MPH SHIFTING TO
                    THE SOUTHEAST IN THE LATE MORNING AND
                    AFTERNOON.
HAINES INDEX........3 VERY LOW.
SMOKE DISPERSAL.....GOOD.
LAL.................2.
CWR.................80 PERCENT.

$$

FORECASTER...MERRIMAN
REQUESTED BY...JEFF DION
TYPE OF REQUEST...PRESCRIBED
.TAG 20110519.ARROW.01/BIS