FNUS73 KDVN 201413
FWSDVN

SPOT FORECAST FOR OFFICE PRAIRIE...PORT LOUISA NWR
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
913 AM CDT WED APR 20 2011

FORECAST IS BASED ON IGNITION TIME OF 1400 CDT ON APRIL 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

HIGH PRESSURE WILL BE BUILDING INTO THE REGION TODAY AND TONIGHT. SKIES WILL
BECOME MOSTLY SUNNY TODAY THEN CLEAR TO PARTLY CLOUDY TONIGHT. TEMPERATURES
REMAINING ON THE COOL SIDE THROUGH THURSDAY. CLOUDS INCREASING ON THURSDAY
AHEAD OF THE NEXT STORM SYSTEM WITH MORE RAIN THURSDAY NIGHT AND FRIDAY.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING MOSTLY SUNNY.
TEMPERATURE.........47 AT IGNITION...MAX 49.
RH..................60 PERCENT AT IGNITION...MIN 58 PERCENT.
EYE LEVEL WINDS.....WINDS NORTHWEST AT 12 MPH AT IGNITION...OTHERWISE
                    NORTHWEST WINDS 10 TO 12 MPH.
WIND SHIFT..........NONE.
CWR.................0 PERCENT.
LAL.................1 OR NONE.
HAINES INDEX........2 TO 3 OR OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3300 FT AGL INCREASING TO 5700 FT AGL THIS AFTERNOON.
MIXING WINDS........NORTHWEST 15 TO 20 MPH.

TIME (CDT)      2 PM   4 PM   6 PM
SKY (%).........MCLDY  MCLDY  PCLDY
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE
TEMP............47     48     47
RH..............60     58     60
EYE LEVEL WIND..290/12 290/12 290/10
EYE LEVEL GUST..15     15     15
HAINES INDEX....3      3      3

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. PATCHY FOG AFTER MIDNIGHT.
TEMPERATURE.........MIN 34.
RH..................MAX 82 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS 5 TO 10 MPH UNTIL EARLY MORNING
                    BECOMING LIGHT.
WIND SHIFT..........NONE.
CWR.................0 PERCENT.
LAL.................1 OR NONE.
HAINES INDEX........3 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE
                    PLUME DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3800 FT AGL DECREASING TO 1900 FT AGL
                    EARLY IN THE EVENING.
MIXING WINDS........WEST 9 TO 18 MPH DECREASING TO 3 TO 6 MPH IN
                    THE LATE EVENING AND EARLY MORNING...THEN
                    SHIFTING TO THE NORTH 6 TO 7 MPH AFTER
                    MIDNIGHT.

.THURSDAY...

SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........MAX 52.
RH..................MIN 52 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTHEAST 5 TO 14 MPH.
WIND SHIFT..........SOUTHEAST BY 9 OR 10 AM.
CWR.................0 PERCENT INCREASING TO 10 PERCENT IN THE
                    AFTERNOON.
LAL.................1 OR NONE.
HAINES INDEX........3 TO 5 OR VERY LOW TO MODERATE POTENTIAL FOR
                    LARGE PLUME DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1500 FT AGL INCREASING TO 2500 FT AGL
                    IN THE AFTERNOON.
MIXING WINDS........SOUTHEAST 8 TO 15 MPH.

$$
FORECASTER...HAASE
REQUESTED BY...ERIK ACKER
TYPE OF REQUEST...PRESCRIBED
.TAG 20110420.OFFIC.01/DVN