FNUS71 KPBZ 261531
FWSPBZ

SPOT FORECAST FOR UPPERMILSTONE RX09...UAFS
NATIONAL WEATHER SERVICE PITTSBURGH PA
1131 AM EDT SUN APR 26 2009

FORECAST IS BASED ON IGNITION TIME OF 1150 EDT ON APRIL 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

HIGH PRESSURE CENTERED OFF THE CAROLINA COAST WILL KEEP THE UPPER
OHIO VALLEY DRY AND WARM INTO MONDAY. THEN A SLOWLY MOVING LOW
PRESSURE SYSTEM COMING FROM THE PLAINS MAY BRING SEVERAL PERIODS
OF SHOWERS STARTING TUESDAY AS THIS SYSTEM MAY STALL IN ITS TREK
ACROSS THE OHIO VALLEY.

.REST OF TODAY...

SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT).
TEMPERATURE.........79 AT IGNITION...MAX 84.
RH..................37 PERCENT AT IGNITION...MIN 32 PERCENT.
WIND (20 FT)........WINDS WEST AT 10 MPH AT IGNITION...OTHERWISE
                    WEST WINDS 8 TO 10 MPH.
CHANCE OF PCPN......10 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH AT IGNITION...MAX 5.
MIXING HEIGHT.......4300 FT AGL AT IGNITION...OTHERWISE 3200-4300
                    FT AGL...INCREASING TO 5400-7100 FT AGL IN THE
                    AFTERNOON.
MIXING WINDS........WEST 20 TO 25 MPH.

TIME (EDT)      11 AM  1 PM   3 PM   5 PM   7 PM   9 PM
SKY (%).........25     28     28     27     26     27
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............76     80     81     81     78     73
RH..............37     32     32     32     35     42
20 FT WIND......W 7    SW 8   SW 7   W 6    W 5    SW 2
20 FT WIND GUST.10     15     10     10            5
CHC OF PCPN (%).10     10     10     10     10     10
HAINES INDEX....4      4      5      5      5      5

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
TEMPERATURE.........MIN 56.
RH..................MAX 80 PERCENT.
WIND (20 FT)........WEST WINDS 6 TO 7 MPH EARLY IN THE
                    EVENING...BECOMING LIGHT AND VARIABLE...THEN
                    BECOMING SOUTHEAST AROUND 5 MPH LATE.
CHANCE OF PCPN......10 PERCENT.
LAL.................1.
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.
MIXING HEIGHT.......5900-7400 FT AGL...DECREASING TO 3700-4800 FT
                    AGL LATE.
MIXING WINDS........SOUTHWEST 22 TO 28 MPH.

.MONDAY...

SKY/WEATHER.........SUNNY (15-25 PERCENT).
TEMPERATURE.........MAX 82.
RH..................MIN 30 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 8 TO 13 MPH WITH GUSTS UP TO 25
                    MPH.
CHANCE OF PCPN......10 PERCENT.
LAL.................1.
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.
MIXING HEIGHT.......1100-2600 FT AGL...INCREASING TO 3300-5200 FT
                    AGL IN THE AFTERNOON.
MIXING WINDS........SOUTHWEST 20 TO 29 MPH...INCREASING TO 30 TO 32
                    MPH LATE.

$$
FORECASTER...99
REQUESTED BY...GARY KOLESAR
TYPE OF REQUEST...PRESCRIBED
.TAG 20090426.UPPER.02/PBZ