FNUS73 KGRR 181241
FWSGRR

FIRE WEATHER PLANNING FORECAST FOR POWERLINE RX...USFS
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
841 AM EDT SAT APR 18 2009

FORECAST IS BASED ON IGNITION TIME OF 1200 EDT ON APRIL 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...TODAY WILL BE THE LAST WARM AND VERY DRY DAY. A COLD
FRONT WILL DROP SOUTH FROM CANADA TONIGHT AND THE WINDS WILL SHIFT
FROM SOUTHWESTERLY TO EASTERLY. RAIN IS LIKELY ON SUNDAY AND
MONDAY... WITH COOLER TEMPERATURES AND HIGHER HUMIDITY LEVELS.


.TODAY...

SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT).
TEMPERATURE.........63 AT IGNITION...MAX 71.
RH..................26 PERCENT AT IGNITION...MIN 22 PERCENT.
WIND (20 FT)........WINDS WEST SOUTHWEST AT 12 MPH AT
                    IGNITION...OTHERWISE SOUTHWEST WINDS
                    7 TO 12 MPH.
MIXING WINDS........WEST 7 TO 16 MPH.
MIXING HEIGHT.......3500 FT AGL AT IGNITION...OTHERWISE 5200-5700
                    FT AGL DECREASING TO 2700 FT AGL TOWARD
                    EVENING.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH AT IGNITION...MAX 5.
SMOKE DISPERSAL.....POOR TO GOOD (0-400 KNOT-FT) INCREASING TO GOOD
                    /500 KNOT-FT/ AT IGNITION. MAX...EXCELLENT /700
                    KNOT-FT/.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
                    RAIN EARLY...THEN A CHANCE OF RAIN OVERNIGHT.
TEMPERATURE.........MIN 43.
RH..................MAX 89 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 10 MPH SHIFTING TO THE EAST 10
                    TO 15 MPH AFTER MIDNIGHT.
MIXING WINDS........WEST 6 TO 8 MPH SHIFTING TO THE NORTH 2 TO 3
                    MPH UNTIL MIDNIGHT...THEN SHIFTING TO THE EAST
                    6 TO 15 MPH FROM LATE EVENING THROUGH ABOUT 5
                    AM INCREASING TO 16 TO 17 MPH TOWARD DAYBREAK.
MIXING HEIGHT.......900-1400 FT AGL.
HAINES INDEX........3 TO 5 OR OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL
                    FOR LARGE PLUME DOMINATED FIRE GROWTH.
SMOKE DISPERSAL.....POOR (0-100 KNOT-FT).

.SUNDAY...

SKY/WEATHER.........CLOUDY (85-95 PERCENT). CHANCE OF RAIN UNTIL
                    MIDDAY...THEN RAIN LIKELY IN THE AFTERNOON.
TEMPERATURE.........MAX 54.
RH..................MIN 63 PERCENT.
WIND (20 FT)........EAST WINDS 13 TO 18 MPH.
MIXING WINDS........EAST 16 TO 25 MPH.
MIXING HEIGHT.......1400-1900 FT AGL.
HAINES INDEX........2 TO 3 OR OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
SMOKE DISPERSAL.....POOR TO GOOD (100-400 KNOT-FT).

$$
FORECASTER...MEADE
REQUESTED BY...KEVIN SHERRETZ
TYPE OF REQUEST...PRESCRIBED
.TAG 20090418.POWER.01/GRR