Area Forecast Discussion
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000 FXUS61 KPBZ 152003 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 303 PM EST MON DEC 15 2014 .SYNOPSIS... LOW PRESSURE WILL BRING SHOWERS LATER TONIGHT AND TUESDAY WITH COOLER TEMPERATURES WEDNESDAY. && .NEAR TERM /THROUGH TUESDAY/... STRATUS SLOWLY ERODING WITH A LARGE CLEAR AREA ACROSS OHIO AND WEST VIRGINIA WHERE CIRRUS IS WORKING NORTHEAST AHEAD OF APPROACHING STORM SYSTEM. LATER TONIGHT OCCLUDED FRONT AHEAD OF LOW PRESSURE WORKING INTO THE WESTERN GREAT LAKES WILL BRING SHOWERS TO THE REGION MAINLY AFTER MIDNIGHT. TEMPERATURES SHOULD NOT DROP OFF A GREAT DEAL WITH EVENTUAL SOUTHEAST WINDS INCREASING AND ADDITIONAL CLOUDS AS SYSTEM APPROACHES. SURFACE LOW WILL SWING ACROSS THE GREAT LAKES TUESDAY WITH SHOWERS CONTINUING THROUGH MUCH OF THE DAY. TEMPERATURES WILL BE MILD WITH READINGS MORE THAN 10 DEGREES ABOVE THE SEASONAL AVERAGES. && .SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/... COLD ADVECTION WILL WORK IN BEHIND EXITING LOW PRESSURE TUESDAY NIGHT AND WEDNESDAY AS A SHORTWAVE DUMBBELLS AROUND DEVELOPING NEW ENGLAND CLOSED LOW. RAIN SHOWERS WILL MIX WITH AND CHANGE TO SNOW OVERNIGHT AND LINGER INTO WEDNESDAY. 850MB TEMPS FALL TO NEAR -10C BY LATE WEDNESDAY WITH COLD AIR REMAINING INTO THURSDAY. SNOW SHOWER CHANCES WILL REMAIN IN THE RIDGES AND I-80 CORRIDOR BUT LOW INVERSION HEIGHTS AND A WESTERLY COMPONENT TO WINDS LOOK TO KEEP ANY ACCUMULATIONS SPOTTY FOR NOW. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... RIDGING IS PROGGED TO BLD IN THU NGT AND FRI ENDING ANY LINGERING SNW SHWRS N OF I 80. AN UPR TROF MOVG OUT OF THE CNTRL CONUS... WITH A DVLPG SERN CONUS SFC LOW...WL RTN PCPN CHCS SAT INTO SUN. MAINTAINED CHC POPS WITH UNCERTAINTY IN NRN EXTENT OF ANY PCPN AND THE TRACK OF THE LOW. RIDGING IS PROGGED LTR SUN AND MON. NR SEASONAL AVG TEMPS ARE EXPD THRU THE PD. && .AVIATION /19Z MONDAY THROUGH SATURDAY/... LLVL MSTR RMNS TRAPPED BLO A TEMP INVERSION ACRS MUCH OF WRN PA AND THE WV PANHANDLE. THE ST IS PROGGED TO GRDLY ERODE AND LIFT WITH AN IMPROVEMENT FM IFR TO EVENTUAL MVFR AND VFR FM S-N INTO TNGT AS THE FLOW BCMS SE AND WRM ADVCTN DVLPS. PORTS N OF I 80 SHOULD KEEP ST COVG INTO THE OVRNGT HRS BEFORE CLRG. AN ADVNG CDFNT IS EXPD TO BRING MVFR CONDS AND SHWRS LT TNGT INTO TUE. OUTLOOK.../TUESDAY NIGHT THROUGH SATURDAY/... OCNL RSTRNS ARE EXPD THRU THU WITH SVRL ADVNG GT LKS DISTURBANCES. LOW PRES WL RTN RSTRN CHCS SAT. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && $$

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