Area Forecast Discussion
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000 FXUS61 KPBZ 241157 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 757 AM EDT THU JUL 24 2014 .SYNOPSIS... DRY AND COOLER WEATHER WILL CLOSE THE WORK WEEK...WITH SHOWER AND THUNDERSTORM CHANCES RETURNING FOR THE WEEKEND. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... NO MAJOR CHANGES WERE NEEDED FOR THE POST DAWN UPDATE AS BLDG SFC HIGH UNDR UPR TROFG SHUNTS COOLER AND DRIER AIR OVR THE REGION...AND PUSHES LINGERING PCPN CHCS IN VCNTY OF MGW SWD. TEMPS WERE FORECAST NRLY 10 DEG UNDR THE AVGS GIVEN COLD ADVCTN AND STRATOCU EXPECTATIONS WITH LOW...BUT CAPPED CONVECTIVE THRESHOLDS. && .SHORT TERM /6 PM THIS EVENING THROUGH SATURDAY/... HIGH PRESSURE AT THE SURFACE AND NORTHWEST FLOW ALOFT WILL PROVIDE A COMFORTABLE FRIDAY WITH PLENTY OF SUNSHINE. MORE ZONAL FLOW IS PROJECTED BY SATURDAY IN RESPONSE TO LOW PRES DIGGING TWD THE NRN PLNS. SWD DIPPING JET IS LIKELY TO INCRS DEEP LYR SHEAR OVR THE REGION AND CONT TO SPPRT TSTM CHCS SHOULD TIMING/INSTRABILITY PARAMETERS COOPERATE. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... PHASING OF THE AFOREMENTIONED LOW WITH A JAMES BAY LOW IS PROGGED TO DVLP A HIGH AMPLITUDE TROF OVR THE ERN CONUS. GENLY DRY AND COOL CONDITIONS ARE THUS THE TREND FOR THE EXTENDED PD. && .AVIATION /11Z THURSDAY THROUGH MONDAY/... MVFR AND LOW END VFR STRATOCU DVLPMNT IS ANTICIPATED TDA AS COLD AVCTN CONTS OVR THE UPR OH REGION. DRY ADVCTN AND WEAKENING FLOW BY LATE DAY WL SPPRT MORE DECISIVE VFR...WHICH WL CONT THROUGH FRIDAY. OUTLOOK.../FRIDAY THROUGH MONDAY/... RESTRICTIONS ARE LIKELY LATER SATURDAY AND SUNDAY AS LOW PRES SPREADS SHWRS AND TSTMS OVR THE UPR OH REGION. THE POTENTIAL WL CONT INTO MONDAY WITH PASSAGE OF THAT SYSTEMS CDFNT. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && $$ 15

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