FNUS73 KGRR 081253
FWSGRR

FIRE WEATHER PLANNING FORECAST FOR POWERLINE PU8 RX...USFS
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
853 AM EDT FRI MAY 8 2009

FORECAST IS BASED ON IGNITION TIME OF 1230 EDT ON MAY 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A GOOD DEAL OF SUNSHINE IS EXPECTED TODAY ALONG WITH WARM
TEMPERATURES. HIGHS TODAY WILL PUSH INTO THE LOWER 70S. A LOW
PRESSURE SYSTEM WILL BRING SHOWERS AND THUNDERSTORMS LATE TONIGHT
INTO SATURDAY MORNING. IT WILL TURN VERY BREEZY AND MUCH COOLER
SATURDAY WITH HIGH TEMPERATURES ONLY IN THE 50S. COOL WEATHER WILL
CONTINUE THROUGH THE WEEKEND.

WINDS TODAY WILL BE SOUTHWEST THIS MORNING GRADUALLY SHIFTING
AROUND TO THE NORTHWEST IN THE AFTERNOON. WIND SPEEDS WILL
GENERALLY BE IN THE 5 TO 10 MPH RANGE.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
TEMPERATURE.........68 AT IGNITION...MAX 74.
RH..................48 PERCENT AT IGNITION...MIN 35 PERCENT.
WIND (20 FT)........WINDS WEST AT 12 MPH AT IGNITION...OTHERWISE
                    NORTHWEST WINDS 7 TO 11 MPH.
MIXING WINDS........WEST 8 TO 12 MPH INCREASING TO 10 TO 16 MPH IN
                    THE AFTERNOON.
MIXING HEIGHT.......4700 FT AGL FROM LATE MORNING THROUGH EARLY
                    AFTERNOON...THEN INCREASING TO 7100 FT AGL AT
                    IGNITION...OTHERWISE 9100-9600 FT AGL THROUGH
                    MID AFTERNOON DECREASING TO 4700 FT AGL.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH AT IGNITION...MAX 5.
SMOKE DISPERSAL.....EXCELLENT /1000 KNOT-FT/ AT IGNITION.
                    MAX...EXCELLENT /1000 KNOT-FT/ FROM LATE
                    MORNING THROUGH EARLY AFTERNOON...THEN
                    INCREASING TO EXCELLENT TO EXCELLENT (1300-1500
                    KNOT-FT) THROUGH MID AFTERNOON DECREASING TO
                    EXCELLENT TO EXCELLENT (700-1000 KNOT-FT) LATE
                    IN THE DAY.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). RAIN SHOWERS
                    LIKELY AND A CHANCE OF THUNDERSTORMS OVERNIGHT.
TEMPERATURE.........MIN 48.
RH..................MAX 80 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 8 MPH IN THE EVENING BECOMING
                    LIGHT...THEN BECOMING SOUTH 9 TO 14 MPH AFTER
                    MIDNIGHT. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS OVERNIGHT.
MIXING WINDS........NORTHWEST 5 TO 7 MPH SHIFTING TO THE EAST 2 TO
                    9 MPH...THEN INCREASING TO 13 TO 18 MPH TOWARD
                    DAYBREAK.
MIXING HEIGHT.......2400-2900 FT AGL DECREASING TO 400-900 FT AGL.
SMOKE DISPERSAL.....POOR TO FAIR (0-200 KNOT-FT).

.SATURDAY...

SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). RAIN SHOWERS
                    LIKELY AND A CHANCE OF THUNDERSTORMS UNTIL
                    MIDDAY...THEN A CHANCE OF RAIN SHOWERS IN THE
                    AFTERNOON.
TEMPERATURE.........MAX 53.
RH..................MIN 65 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 11 TO 16 MPH SHIFTING TO THE
                    NORTH 13 TO 18 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS UNTIL MIDDAY.

$$
FORECASTER...DUKE
REQUESTED BY...BOB LITTLE
TYPE OF REQUEST...PRESCRIBED
.TAG 20090508.POWER.01/GRR