Area Forecast Discussion
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000 FXUS61 KPBZ 230550 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 1250 AM EST FRI JAN 23 2015 .SYNOPSIS... HIGH PRESSURE WILL BRIEFLY BUILD IN TODAY UNTIL SEVERAL AREAS OF LOW PRESSURE WILL BRING UNSETTLED WEATHER OVER THE WEEKEND. && .NEAR TERM /THROUGH TODAY/... LLVL CLDS WL RMN LOCKED UNDER A TEMP INVERSION INTO ERLY MRNG. SBSDNC UNDER BLDG HIGH PRES SHOULD ALLOW FOR THE LLVL CLDS TO BREAK...THOUGH MID LVL CLDS WL BE INCRG AHD OF THE NXT APCHG SHRTWV. NUDGED TEMPS TWD THE SEASONAL AVG SREF NMBRS. && .SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/... THE APCHG SHRTWV WL CROSS THE ERN CONUS TNGT AS A DVLPG SFC LOW TRACKS FM THE GULF COAST TO THE MID ATLANTIC RGN. LATEST MDL TRENDS SHIFT PCPN FURTHER N INTO THE AREA...AND WL LIKELY ADJUST POPS UPWD AFT REVIEW OF ALL EVE GUIDANCE. ADVYS MAY BE NEEDED FOR SNW ACRS THE HIGHER TERRAIN OF MD AND WV. AREAS NR I 80 AND N SHOULD RMN DRY. THIS SHRTWV IS PROGGED TO EXIT THE RGN SAT...THOUGH SOME LGT LINGERING UPSLOPE SNW SHWRS ARE PSBL AS THE AREA RMNS UNDER BROAD UPR TROFG. A DEEPENING SHRTWV IS EXPD TO MOVE ACRS THE UPR OH VLY AND GT LKS RGN SUN INTO MON. MDL DIFFERENCES STILL EXISTS IN PLACEMENT OF THE SFC AND MID LVL LOWS AND HOW MUCH WRM ADVCTN OCCURS AHD OF THEM. ACCUMULATING SNW POTENTIAL EXITS ACRS THE AREA...WITH POTENTIAL FOR HIGHEST ACCUMS N OF THE SFC AND MD LVL LOWS. WL REVIEW FINAL 00Z GUIDANCE FOR ANY CHGS. && .LONG TERM /MONDAY THROUGH THURSDAY/... THE LONG TERM FORECAST WL FEATURE MODERATING TEMPS AFTR A COLD START AS THE ERN CONUS TROF FILLS. SFC HIGH UNDR FLAT SHRTWV RIDGING SHOULD SUPPRESS PCPN UNTIL THE APCH OF LATE WEEK LOW PRES. && .AVIATION /06Z FRIDAY THROUGH TUESDAY/... MVFR CIGS WL PERSIST THROUGH THE MRNG AS SBSDNCE INVERSION SLOWLY LWRS. IFR IS STILL EXPECTED AT FKL AND DUJ THROUGH THE PERIDAWN HRS. SHRTWV RIDGING IN ADVN OF DEEPENING LOW OVR THE LOWER MS VALLEY IS EXPECT TO INCRS SBSDNC SUFFICIENTLY TO SPPRT VFR AS THE DAY PROGRESSES. EXPECT CONDITION DETERIORATION ONCE AGAIN TNGT...PRIMARILY TO MVFR...AS THE WRN FLANK OF MID ATLANTIC REGION LOW PRES CLIPS THE AREA. .OUTLOOK.../SATURDAY THROUGH WEDNESDAY/... CROSSING LOW PRES IS LIKELY TO SPAWN RESTRICTIONS S AND E OF PIT ON SATURDAY...AND OVR ALL TERMINALS ON SUNDAY AND MONDAY. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && $$ 07/15

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