FNUS73 KMPX 261423
FWSMPX

SPOT FORECAST FOR PRAIRIE ISLAND PILE...BIA
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
923 AM CDT FRI APR 26 2013

FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON APRIL 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
SOUTHERLY WINDS AT IGNITION TIME WILL SHIFT TO WESTERLY BY LATE
AFTERNOON AS A TROUGH OF LOW PRESSURE PASSES. MINIMUM RELATIVE HUMIDITY
VALUES THIS AFTERNOON WILL DECLINE TO NEAR 35 PERCENT AND COMBINE
WITH NEARLY FULL SUNSHINE.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........54 AT IGNITION...MAX 67.
RH..................58 PERCENT AT IGNITION...MIN 37 PERCENT.
WIND (20 FT)........WINDS SOUTHWEST AT 10 MPH AT
                    IGNITION...OTHERWISE WEST WINDS 5 TO 10 MPH.
HAINES INDEX........4 OR LOW AT IGNITION...MAX 6.
SMOKE DISPERSAL.....POOR TO GOOD (4100-49200) INCREASING TO GOOD TO
                    EXCELLENT (51500-61500) EARLY IN THE AFTERNOON.
MIXING HEIGHT.......300-2100 FT AGL INCREASING TO 5000-5900 FT AGL.
MIXING WINDS........WEST 14 TO 23 MPH DECREASING TO 12 TO 13 MPH
                    LATE IN THE AFTERNOON.

TIME (CDT)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
SKY (%).........PCLDY  MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............49     54     60     64     66     67
RH..............63     58     51     46     37     36
20 FT WIND......S 5    SW 9   SW 8   SW 8   W 7    W 5
20 FT WIND GUST.       15     15     10     10
HAINES INDEX....5      4      5      6      5      4

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
TEMPERATURE.........MIN 41.
RH..................MAX 96 PERCENT.
WIND (20 FT)........WEST WINDS AROUND 5 MPH EARLY IN THE EVENING
                    BECOMING LIGHT.
SMOKE DISPERSAL.....FAIR TO GOOD (13000-51600) DECREASING TO POOR
                    (400-1300) IN THE LATE EVENING AND OVERNIGHT.

.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........MAX 69.
RH..................MIN 45 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 8 MPH EARLY IN
                    THE MORNING.
SMOKE DISPERSAL.....POOR TO GOOD (900-44700) INCREASING TO GOOD
                    (40300-54100) LATE IN THE AFTERNOON.
MIXING HEIGHT.......300-2100 FT AGL INCREASING TO 6500-7800 FT AGL.
MIXING WINDS........SOUTHWEST 5 TO 9 MPH.

$$
FORECASTER...SCHMIT
REQUESTED BY...DAVE PERGOLSKI
TYPE OF REQUEST...PRESCRIBED
.TAG 20130426.PRAIR.01/MPX