FNUS73 KMPX 231257
FWSMPX

SPOT FORECAST FOR STERLING SUNRISE PRAIRIE...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
757 AM CDT THU APR 23 2009

FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON APRIL 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
UNSEASONABLY WARM AIR AND STRONG SOUTHERLY WINDS WILL OCCUR AHEAD OF AN
APPROACHING COLD FRONT TODAY. AFTERNOON HIGHS WILL TOP OUT IN THE UPPER 70S
AT THE BURN SITE THIS AFTERNOON...AND COMBINE WITH AFTERNOON
MINIMUM RELATIVE HUMIDITIES BETWEEN 25 AND 30 PERCENT. SOUTHERLY WINDS WILL
INCREASE TO AROUND 20 MPH THIS AFTERNOON...WITH GUSTS TO AROUND 30 MPH
POSSIBLE. A COLD FRONT WILL MOVE ACROSS THE AREA ON FRIDAY...AND BRING
CHANCES FOR SHOWERS AND ISOLATED THUNDERSTORMS THROUGH THE WEEKEND.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........64 AT IGNITION...MAX 78.
RH..................34 PERCENT AT IGNITION...MIN 28 PERCENT.
WIND (20 FT)........WINDS SOUTH AT 18 MPH AT IGNITION...OTHERWISE
                    SOUTH WINDS 15 TO 20 MPH.
HAINES INDEX........4 OR LOW AT IGNITION...MAX 5.
SMOKE DISPERSAL.....POOR TO GOOD (4100-44900) INCREASING TO
                    EXCELLENT (61700-107000) IN THE LATE MORNING
                    AND AFTERNOON.
MIXING HEIGHT.......300-1900 FT AGL INCREASING TO 2500-4400 FT AGL
                    IN THE LATE MORNING AND AFTERNOON.
MIXING WINDS........SOUTH 22 TO 31 MPH INCREASING TO 28 TO 35 MPH
                    IN THE LATE MORNING AND AFTERNOON.

TIME (CDT)      9 AM   11 AM  1 PM   3 PM   5 PM   7 PM
SKY (%).........PCLDY  PCLDY  PCLDY  PCLDY  PCLDY  PCLDY
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............53     64     72     77     78     75
RH..............44     34     30     29     30     37
20 FT WIND......S 14   S 16   S 17   S 18   S 17   S 15
20 FT WIND GUST.25     30     30     30     30     25
HAINES INDEX....4      4      4      5      5      4

.FRIDAY...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON. CHANCE OF RAIN
                    30 PERCENT.
TEMPERATURE.........MAX 69.
RH..................MIN 43 PERCENT.
WIND (20 FT)........NORTH WINDS 8 TO 13 MPH.

$$
FORECASTER...SCHMIT
REQUESTED BY...SCOTT BRESSLER
TYPE OF REQUEST...PRESCRIBED
.TAG 20090423.STERL.01/MPX