FNUS73 KMPX 281210
FWSMPX

SPOT FORECAST FOR OTTAWA BLUFFS...FWS
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
710 AM CDT WED APR 28 2010

FORECAST IS BASED ON IGNITION TIME OF 1030 CDT ON APRIL 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A LARGE AREA OF LOW PRESSURE IS EXPECTED TO DEVELOP ACROSS
THE PLAINS TODAY AND CAUSE SOUTHEAST WINDS TO INCREASE
SIGNIFICANTLY BY AFTERNOON...AND CONTINUE THROUGH THURSDAY
BEFORE A FRONTAL BOUNDARY MOVES CLOSER TO THE AREA...AND
THE PRESSURE GRADIENT LESSENS. LOW HUMIDITY VALUES WILL
LIKELY ACCOMPANY THE SOUTHEAST WINDS AND CREATE DANGEROUS
FIRE WEATHER CONDITIONS. INCREASING MOISTURE BY LATER TONIGHT
...AND INTO THURSDAY WILL SLOWLY MODIFY HUMIDITY LEVELS...
ALONG WITH A CHANCE OF PRECIPITATION.


.TODAY...

SKY/WEATHER.........PARTLY SUNNY.
                    TEMPERATURE.........56 AT IGNITION...MAX 68.
                    MIN HUMIDITY........46 PERCENT AT IGNITION...MIN 26 PERCENT.
WIND (20 FT)........WINDS SOUTH AT 11 MPH AT IGNITION...OTHERWISE
                    SOUTHEAST WINDS 14 TO 19 MPH WITH GUSTS TO
                    AROUND 30 MPH.
HAINES INDEX........4 OR LOW AT IGNITION...MAX 4.
SMOKE DISPERSAL.....POOR TO GOOD (2000-36600) INCREASING TO
                    EXCELLENT (115800-128300).
MIXING HEIGHT.......300-1000 FT AGL INCREASING TO 5800-7000 FT AGL.
MIXING WINDS........SOUTH 10 TO 17 MPH INCREASING TO 20 TO 29 MPH
                    IN THE AFTERNOON.

TIME (CDT)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
SKY (%).........PCLDY  PCLDY  PCLDY  PCLDY  MCLDY  MCLDY
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............42     52     60     65     68     67
RH..............64     46     34     28     26     27
20 FT WIND......SE 6   SE 8   S 12   S 15   S 16   SE 17
20 FT WIND GUST.10     15     20     25     30     30
HAINES INDEX....4      4      4      4      4      4

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
                    SCATTERED RAIN SHOWERS AFTER MIDNIGHT.
MIN TEMPERATURE.....53.
MAX HUMIDITY........69 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 13 TO 18 MPH WITH GUSTS TO
                    AROUND 30 MPH.
SMOKE DISPERSAL.....EXCELLENT (87800-127600) DECREASING TO FAIR TO
                    EXCELLENT (26500-61100) LATE IN THE EVENING.
MIXING HEIGHT.......3800-5200 FT AGL DECREASING TO 1100-3000 FT AGL
                    IN THE LATE EVENING AND OVERNIGHT.
MIXING WINDS........SOUTHEAST 31 TO 39 MPH.

.THURSDAY...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF PRECIPITATION 20
                    PERCENT.
MAX TEMPERATURE.....73.
MIN HUMIDITY........46 PERCENT.
WIND (20 FT)........SOUTH WINDS 15 TO 20 MPH WITH GUSTS TO AROUND
                    30 MPH.
HAINES INDEX........2 TO 3 OR OR VERY LOW.
SMOKE DISPERSAL.....FAIR TO EXCELLENT (27800-74600) INCREASING TO
                    EXCELLENT (130400-150600).
MIXING HEIGHT.......1100-3000 FT AGL INCREASING TO 5000-5800 FT
                    AGL.
MIXING WINDS........SOUTH 31 TO 35 MPH.

$$
FORECASTER...RICHARDSON
REQUESTED BY...MATT GRAEVE
TYPE OF REQUEST...PRESCRIBED
.TAG 20100428.OTTAW.01/MPX