FNUS73 KBIS 271335
FWSBIS

SPOT FORECAST FOR RATTLER LAKE...USFWS
NATIONAL WEATHER SERVICE BISMARCK ND
835 AM CDT TUE APR 27 2010

FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON APRIL 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
SURFACE HIGH PRESSURE OVER WESTERN NORTH DAKOTA WILL GRADUALLY
SLIDE EASTWARD TODAY. CALM WINDS WILL BECOME SOUTHEASTERLY AT
5 MPH BY IGNITION AND INCREASE TO 15 MPH BY LATE
AFTERNOON. WINDS WILL THEN BEGIN TO INCREASE EARLY WEDNESDAY IN
ADVANCE OF A RAPIDLY DEEPENING SURFACE LOW PRESSURE SYSTEM OVER
MONTANA. GUSTS TO 40 MPH ARE POSSIBLE BY WEDNESDAY AFTERNOON.
LOW-LEVEL MOISTURE FROM RAIN/SNOW MONDAY SHOULD HELP TO KEEP
RELATIVE HUMIDITIES ABOVE 30 PERCENT TODAY.
.TODAY...

SKY/WEATHER.........PATCHY MORNING FOG OTHERWISE MOSTLY SUNNY.
                    TEMPERATURE.........51 AT IGNITION...MAX 61.
                    MIN HUMIDITY........46 PERCENT AT IGNITION...MIN 31 PERCENT.
WIND (20 FT)........WINDS SOUTH AT 5 MPH AT IGNITION...OTHERWISE
                    LIGHT WINDS BECOMING SOUTHEAST 10 TO 15 MPH.
HAINES INDEX........3 VERY LOW AT IGNITION...MAX 3.
SMOKE DISPERSAL.....VERY GOOD.
LAL.................1.
CWR.................0 PERCENT.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....40.
MAX HUMIDITY........79 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 15 TO 20 MPH.
SMOKE DISPERSAL.....POOR.
LAL.................1.
CWR.................0 PERCENT.

.WEDNESDAY...

SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....62.
MIN HUMIDITY........41 PERCENT.
WIND (20 FT)........SOUTH WINDS 15 TO 20 MPH.
HAINES INDEX........4 LOW.
SMOKE DISPERSAL.....EXCELLENT.
LAL.................3.
CWR.................13 PERCENT.

$$
FORECASTER...WETZEL
REQUESTED BY...COLLEEN GRAUE
TYPE OF REQUEST...PRESCRIBED
.TAG 20100427.RATTL.01/BIS