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-- Discussion containing changed information from previous version are highlighted. --
000
FXUS61 KPBZ 081714
AFDPBZ

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PITTSBURGH PA
1214 PM EST SAT MAR 8 2014

.SYNOPSIS...
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A WEAK COLD FRONT WILL GENERATE THE CHANCE FOR LIGHT PRECIPITATION
THROUGH TONIGHT.
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&&

.NEAR TERM /THROUGH TONIGHT/...
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LGT MRNG PCPN OVR AREAS N OF PIT WAS ASSOCIATED WITH A WEAK
CROSSING DISTURBANCE FUELED BY ONBOARD MID LVL MSTR SUPPLY. THAT
SYSTEM HAS PUSHED A WEAK COLD FRONT ACRS THE AREA...WHICH WL
SERVE AS FOCUS FOR ADDITIONAL LGT PCPN AS THE NXT SHRTWV AFFECTS
THE REGION INTO TNGT.

MDL OMEGA FIELDS AGAIN EXHIBIT LTD ASCENT WITH WEAKLY FORCED FRONT...HENCE
LGT WORDING DESPITE CHC TO LIKELY POPS...AND LTD QPF WL SUFFICE FOR
PASSAGE OF THIS SYSTEM.

TDAS BNDRY LYR WARMTH WL GIVE WAY TO COLD ADVCTN TNGT...THUS A
CHANGE TO LGT SNOW CAN BE ANTICIPATED...AGAIN WITH NO MENTIONABLE
ACCUMULATION.
-- End Changed Discussion --

&&

.SHORT TERM /SUNDAY THROUGH TUESDAY/...
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COOL HIGH PRES WL SLITHER OVR THE REGION ON SUNDAY. BUT THIS BRIEF
INTRUSION OF COLD AIR LKS TO BE SHORT LIVED...WITH FLOW PROGRESSION
RESUMING WARM ADVCTN LATE SUNDAY THAT WL DRIVE TEMPS BACK ABOVE
THE AVERAGES FOR MONDAY.

SLGT...TO LOW CHC POP WERE ADDED...ADJUSTED FOR MONDAY AND TUESDAY
AS A CROSSING DISTURBANCE MAY HAVE SUFFICIENT MSTR AND DYNAMICS TO
SPAWN SOME SHWRS ALNG SWD SAGGING FRONTAL BNDRY. THAT EVENTUAL BNDRY
POSITIONING WL BE CRITICAL FOR MID WEEK WEA.
-- End Changed Discussion --

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
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SFC LOW PRES IS PROGGED TO TRACK ACRS THE OH VLY INTO THE MD
ATLANTIC RGN WED. CRITICAL THICKNESSES/SOUNDING PROFILES INDICATE
MOSTLY RAIN...EVENTUALLY CHG/MXG WITH SNW LTR IN THE DAY IN COLD
AIR ADVCTN. DRY WEA IS EXPD TO RTN BY LT WK INTO ERLY SAT UNDER
GENL SFC RIDGING.

GENLY FOLLOWED AN ECMWF/WPC BLEND FOR THE FCST. AFT WELL BLO AVG
TEMPS THU...A RTN TO NR SEASONAL AVGS IS EXPD BY FRI AND SAT.
-- End Changed Discussion --

&&

.AVIATION /17Z SATURDAY THROUGH WEDNESDAY/...
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A CDFNT WL MOVE SLOWLY S ACRS THE RGN TDA. MVFR TO OCNL IFR VSBYS
IN HZ WERE SEEN INVOF THE FNT AT FKL AND ZZV...WITH VFR TO THE S.
DEGRADATION TO WDSPRD MVFR IS ANTICIPATED BY THIS EVE...ALONG WITH
A PD OF LGT PCPN...AS COLD ADVCTN IS INITIATED WITH PASSAGE OF
TDAS CDFNT. A RTN TO VFR IS EXPD BY SUN MRNG.

.OUTLOOK.../SUNDAY NIGHT THROUGH WEDNESDAY/...
THE NXT CHC FOR RESTRICTIONS IS EXPECTED WITH MID WEEK LOW PRES.
-- End Changed Discussion --

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...NONE.
OH...NONE.
PA...NONE.
WV...NONE.

&&

$$

15/07