FNUS73 KGRR 121308
FWSGRR

FIRE WEATHER PLANNING FORECAST FOR MACK RD...USFS
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
908 AM EDT TUE MAY 12 2009

FORECAST IS BASED ON IGNITION TIME OF 1300 EDT ON MAY 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE CENTERED JUST SOUTH OF THE STATE THIS
MORNING WILL SHIFT EAST OF THE AREA LATER TODAY. SOUTHERLY WINDS
WILL DEVELOP AND BEGIN MOVING WARMER AND MORE MOIST AIR INTO THE
AREA. A COLD FRONT WILL APPROACH THE AREA LATE IN THE DAY ON
WEDNESDAY...AND WILL BRING A VERY GOOD CHANCE OF SHOWERS AND STORMS
LATE WEDNESDAY AFTERNOON AND WEDNESDAY EVENING.


.TODAY...

SKY/WEATHER.........SUNNY (20-30 PERCENT).
TEMPERATURE.........60 AT IGNITION...MAX 68.
RH..................24 PERCENT AT IGNITION...MIN 18 PERCENT.
WIND (20 FT)........WINDS SOUTHWEST AT 13 MPH AT
                    IGNITION...OTHERWISE SOUTHWEST WINDS 8 TO 13
                    MPH.
MIXING WINDS........SOUTH 9 TO 14 MPH.
MIXING HEIGHT.......2500 FT AGL EARLY IN THE MORNING...INCREASING
                    TO 8200 FT AGL AT IGNITION...DECREASING TO
                    5600 FT AGL LATE IN THE DAY.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH AT IGNITION...MAX 5.
SMOKE DISPERSAL.....POOR TO FAIR (0-200 KNOT-FT) INCREASING TO
                    EXCELLENT /900 KNOT-FT/ AT IGNITION.
                    MAX...EXCELLENT /900 KNOT-FT/.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (60-70 PERCENT).
TEMPERATURE.........MIN 43.
RH..................MAX 61 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 13 TO 18 MPH.
MIXING WINDS........SOUTHEAST 7 TO 14 MPH INCREASING TO 17 TO 20
                    MPH TOWARD DAYBREAK.
MIXING HEIGHT.......3900-4400 FT AGL DECREASING TO 900-1400 FT AGL.
HAINES INDEX........4 TO 5 OR LOW TO MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
SMOKE DISPERSAL.....GOOD TO EXCELLENT (300-600 KNOT-FT) DECREASING
                    TO POOR (0-100 KNOT-FT).

.WEDNESDAY...

SKY/WEATHER.........CLOUDY (85-95 PERCENT). SHOWERS AND
                    THUNDERSTORMS LIKELY.
TEMPERATURE.........MAX 67.
RH..................MIN 49 PERCENT.
WIND (20 FT)........WINDY. SOUTH WINDS 25 TO 30 MPH. GUSTY AND
                    ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
MIXING WINDS........SOUTHEAST 20 TO 25 MPH INCREASING TO SOUTH 31
                    TO 40 MPH.
MIXING HEIGHT.......4800-5300 FT AGL DECREASING TO 2000-2500 FT AGL
                    LATE IN THE DAY.
HAINES INDEX........2 TO 4 OR OR VERY LOW TO VERY LOW POTENTIAL FOR
                    LARGE PLUME DOMINATED FIRE GROWTH.
SMOKE DISPERSAL.....POOR TO GOOD (100-400 KNOT-FT) INCREASING TO
                    EXCELLENT (1800-2100 KNOT-FT) BY MID AFTERNOON.

$$
FORECASTER...MEADE
REQUESTED BY...KORY BORGMAN
TYPE OF REQUEST...PRESCRIBED
.TAG 20090512.MACKR.01/GRR