FNUS71 KPBZ 111746
FWSPBZ

SPOT FORECAST FOR PORKEY HEIGHTS RX...USDA FOREST SERVICE
NATIONAL WEATHER SERVICE PITTSBURGH PA
146 PM EDT WED MAY 11 2011

FORECAST IS BASED ON IGNITION TIME OF 1320 EDT ON MAY 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

AN UPPER LEVEL RIDGE OF HIGH PRESSURE IS STALLED TO OUR WEST...LEADING
TO WARMER TEMPERATURES AND WEAK WINDS ACROSS THE AREA TODAY.  ISOLATED
THUNDERSTORMS MAY DEVELOP IN WESTERN OHIO THIS AFTERNOON...AND MOVE
EASTWARD THIS EVENING INTO EARLY TONIGHT.  RH WILL BE RISING THROUGHOUT
THE REST OF TODAY.  THE QUASI-STATIONARY BOUNDARY CURRENTLY TO OUR WEST
 MOVES EASTWARD TONIGHT...WITH MORE WIDESPREAD RAIN
AND A CHANCE OF THUNDERSTORMS DURING THE DAY ON THURSDAY.  THE GREATEST
CHANCE FOR RAIN IN THE EASTERN PART OF THE PITTSBURGH CWA WILL BE DURING
LATE THURSDAY EVENING.


.REST OF TODAY...

SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
MAX TEMPERATURE.....AROUND 75.
MIN HUMIDITY........39 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS AROUND 6 MPH.
CHANCE OF PCPN......10 PERCENT.
LAL.................1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5600-6200 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....AROUND 46.
MAX HUMIDITY........72 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 6 MPH.
CHANCE OF PCPN......10 PERCENT.
LAL.................1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3900-5400 FT AGL...DECREASING TO 400-800 FT
                    AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH.

.THURSDAY...

SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........39 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
LAL.................1.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......400-2200 FT AGL...INCREASING TO 5000 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.

$$
FORECASTER...99
REQUESTED BY...GARY KOLESAR
TYPE OF REQUEST...PRESCRIBED
.TAG 20110511.PORKE.03/PBZ