FNUS71 KPBZ 281609
FWSPBZ

SPOT FORECAST FOR FARM WOODLOTS C-13...WV-MOF
NATIONAL WEATHER SERVICE PITTSBURGH PA
1209 PM EDT TUE APR 28 2009

FORECAST IS BASED ON IGNITION TIME OF 1230 EDT ON APRIL 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A COLD FRONT WILL BRING SHOWERS AND THUNDERSTORMS TODAY AND
TONIGHT WITH MUCH COOLER TEMPERATURES. THE FRONT WILL STALL SOUTH OF
THE REGION WEDNESDAY AND MOVE NORTH THURSDAY AS LOW PRESSURE MOVES
EAST. THIS WILL BRING SHOWERS AND THUNDERSTORMS THURSDAY AND
FRIDAY.

.REST OF TODAY...

SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). A SLIGHT CHANCE
                    OF SHOWERS AND THUNDERSTORMS LATE. A CHANCE OF
                    SHOWERS AND THUNDERSTORMS LATE.
MAX TEMPERATURE.....AROUND 88.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........WEST WINDS 8 TO 12 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS LATE.
CHANCE OF PCPN......20 PERCENT.
LAL.................1 UNTIL 1500...THEN 2 UNTIL 1600...THEN 3.
HAINES INDEX........4 TO 6 OR OR LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH TO OR HIGH POTENTIAL FOR
                    LARGE PLUME DOMINATED FIRE GROWTH.
MIXING HEIGHT.......7500-9000 FT AGL.
MIXING WINDS........WEST 15 TO 17 MPH.

TIME (EDT)      NOON   2 PM   4 PM   6 PM   8 PM   10 PM
SKY (%).........17     34     56     78     100    100
WEATHER COV.....              CHANCE CHANCE CHANCE LIKELY
WEATHER TYPE....NONE   NONE   RNSHWR RNSHWR RNSHWR RNSHWR
TEMP............81     83     86     84     77     63
RH..............48     47     42     46     58     84
20 FT WIND......W 10   W 9    W 7    W 6    W 4    NW 3
20 FT WIND GUST.20     15     15     15     20     20
CHC OF PCPN (%).10     10     30     40     40     70
HAINES INDEX....5      6      6      4      4      4

.TONIGHT...

SKY/WEATHER.........CLOUDY (85-95 PERCENT). SHOWERS AND A CHANCE OF
                    THUNDERSTORMS IN THE EVENING...THEN SHOWERS
                    LIKELY AFTER MIDNIGHT.
MIN TEMPERATURE.....AROUND 52.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 7 MPH WITH GUSTS UP TO 20 MPH
                    EARLY IN THE EVENING...BECOMING LIGHT AND
                    VARIABLE...THEN BECOMING NORTH 5 TO 6 MPH LATE
                    IN THE EVENING...BECOMING LIGHT AND VARIABLE.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS EARLY IN THE EVENING.
CHANCE OF PCPN......60 PERCENT.
LAL.................3 UNTIL 2100...THEN 1.
HAINES INDEX........3 TO 4 OR OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH TO OR LOW POTENTIAL FOR
                    LARGE PLUME DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5900-7400 FT AGL...DECREASING TO 900-1900 FT
                    AGL.
MIXING WINDS........NORTHEAST 9 TO 16 MPH.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). A CHANCE OF
                    SHOWERS IN THE MORNING...THEN SHOWERS LIKELY IN
                    THE AFTERNOON. A CHANCE OF SHOWERS LATE.
MAX TEMPERATURE.....AROUND 66.
MIN HUMIDITY........85 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS.
CHANCE OF PCPN......50 PERCENT.
LAL.................1.
HAINES INDEX........2 TO 3 OR OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1600-2000 FT AGL.
MIXING WINDS........SOUTHEAST 8 TO 10 MPH.

$$
FORECASTER...15
REQUESTED BY...PATRICIA FELTON
TYPE OF REQUEST...PRESCRIBED
.TAG 20090428.FARMW.01/PBZ