FNUS73 KGRR 161307
FWSGRR

FIRE WEATHER PLANNING FORECAST FOR POWERLINE RX  2...USFS
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
907 AM EDT THU APR 16 2009

FORECAST IS BASED ON IGNITION TIME OF 1600 EDT ON APRIL 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH FIRE DANGER CONTINUES TODAY ACROSS THE AREA AS A LACK OF RAIN
RECENTLY HAS LED TO DRY FUELS. TEMPERATURES WILL BE WARM...RISING
INTO THE UPPER 60S FOR HIGHS UNDER FULL SUNSHINE. A VERY DRY
AIRMASS IS IN PLACE TODAY WITH RELATIVE HUMIDITY VALUES DIPPING
BELOW 20 PERCENT MUCH OF THE AFTERNOON AND EVENING. RELATIVE
HUMIDITY VALUES WILL LIKELY NOT CLIMB ABOVE 20 PERCENT UNTIL AFTER
800 PM THIS EVENING. WITH HIGH PRESSURE DIRECTLY OVERHEAD...WINDS
WILL BE LIGHT AND VARIABLE. A LAKE BREEZE WILL TRY TO DEVELOP
TOWARD EVENING FROM THE WEST-NORTHWEST AT  5 TO 10 MPH.

.TODAY...

SKY/WEATHER.........SUNNY (0-5 PERCENT).
TEMPERATURE.........65 AT IGNITION...MAX 67.
RH..................17 PERCENT AT IGNITION...MIN 17 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 8 MPH IN THE MORNING
                    BECOMING LIGHT...THEN BECOMING NORTHWEST 5 TO 8
                    MPH LATE IN THE DAY.
MIXING WINDS........NORTHEAST 5 TO 8 MPH.
MIXING HEIGHT.......5800 FT AGL AT IGNITION...OTHERWISE 5300-5800
                    FT AGL DECREASING TO 3300 FT AGL IN THE
                    EVENING.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH AT IGNITION...MAX 5.
SMOKE DISPERSAL.....GOOD /300 KNOT-FT/ AT IGNITION. MAX...GOOD /400
                    KNOT-FT/.

.TONIGHT...

SKY/WEATHER.........CLEAR (0-5 PERCENT).
TEMPERATURE.........MIN 26.
RH..................MAX 78 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 8 MPH SHIFTING TO THE SOUTH 5
                    TO 10 MPH AFTER MIDNIGHT.
MIXING WINDS........NORTH 5 TO 8 MPH SHIFTING TO THE SOUTH AROUND 5
                    MPH AFTER MIDNIGHT.
MIXING HEIGHT.......1600-2100 FT AGL DECREASING TO 0-200 FT AGL
                    AFTER MIDNIGHT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
SMOKE DISPERSAL.....POOR TO FAIR (0-200 KNOT-FT).

.FRIDAY...

SKY/WEATHER.........SUNNY (0-5 PERCENT).
TEMPERATURE.........MAX 67.
RH..................MIN 21 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 9 TO 14 MPH.
MIXING WINDS........WEST 5 TO 10 MPH.
MIXING HEIGHT.......4100-4600 FT AGL.
HAINES INDEX........4 TO 5 OR OR LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL
                    FOR LARGE PLUME DOMINATED FIRE GROWTH.
SMOKE DISPERSAL.....POOR TO GOOD (0-400 KNOT-FT).

$$
FORECASTER...DUKE
REQUESTED BY...KORY BORGMAN
TYPE OF REQUEST...PRESCRIBED
.TAG 20090416.POWER.02/GRR