Area Forecast Discussion
Issued by NWS

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS61 KPBZ 271907 AFDPBZ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 307 PM EDT MON APR 27 2015 .SYNOPSIS... AFTER SHOWERS DIMINISH THIS EVENING...DRY AND WARMER WEATHER IS EXPECTED FOR TUESDAY AND WEDNESDAY. && .NEAR TERM /THROUGH TUESDAY/... SHOWERS WILL CONTINUE THIS AFTERNOON INTO THE EVENING...ALTHOUGH IT APPEARS THAT OHIO COUNTIES COULD MANAGE TO REMAIN DRY AT THIS POINT AFTER HAVING MORNING SHOWERS. HAVE KEPT ISOLATED MENTION OF SNOW IN THE FORECAST FOR LOCATIONS ABOVE 2500FT FOR OCCASIONAL SNOWFLAKES OR GRAUPEL...AS AT LEAST ONE REPORT OF FROZEN PRECIPITATION HAS COME IN FROM GREGGS KNOB IN PRESTON COUNTY. SHOWER COVERAGE SHOULD BE VERY LIMITED BY MIDNIGHT. A TEMPERATURE INVERSION DEVELOPING OVERNIGHT SHOULD KEEP CLOUDS ACROSS MOST OF THE FORECAST AREA TONIGHT. THIS SHOULD KEEP LOW TEMPERATURES FROM FALLING TOO FAR...ALTHOUGH TEMPERATURES WERE NEVER THAT WARM TO BEGIN WITH TODAY. STILL THINK THAT CLOUDS WILL LINGER INTO A GOOD PART OF TUESDAY...AND LIGHT NORTHERLY WINDS WILL PREVENT ANY MAJOR WARMUPS. HOWEVER...LATE APRIL SUN ANGLE SHOULD STILL MANAGE TO BRING TEMPERATURES TO WITHIN A FEW TICKS OF THE 60 DEGREE MARK. && .SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/... CONDITIONS SHOULD REMAIN QUIET TUESDAY NIGHT AND WEDNESDAY BEFORE THE REGION FALLS UNDER A PINCHER ATTACK. A COLD FRONT WILL APPROACH FROM THE NORTHWEST...WHILE A LOW IS EXPECTED TO MOVE UP THE ATLANTIC SEABOARD WEDNESDAY NIGHT THROUGH FRIDAY. COMPUTER MODELS HAVE BEEN ALL OVER THE PLACE WITH THESE SYSTEMS OVER THE LAST FEW DAYS. AS A RESULT...HAVE MADE LITTLE CHANGE TO THIS PORTION OF THE FORECAST. HOWEVER...IT DOES APPEAR THAT MORE MOISTURE WILL BE AVAILABLE WITH THE COASTAL FRONT THAN WITH THE FRONT...SO HAVE GONE WITH A GRADIENT FROM EAST TO WEST ACROSS THE FORECAST AREA FOR RAIN CHANCES ON THURSDAY. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... CHANCE POPS DIMINISHING WEST TO EAST THURSDAY NIGHT AS SYSTEM MOVES OFF THE MID ATLANTIC COAST. BY FRIDAY AND THROUGH THE WEEKEND...MODEL DISCREPANCIES ON HANDLING UPPER LEVEL LOW OVER EAST COAST MAKE FOR A LOW CONFIDENCE FORECAST...AND CONTINUED TO FOLLOW NEWEST WPC PROGS INTO MONDAY. && .AVIATION /19Z MONDAY THROUGH SATURDAY/... MVFR RESTRICTIONS EXPECTED UNTIL SHORTWAVE AND DEEPER MOISTURE SHIFT SOUTH AND EAST LATER TONIGHT...WITH QUICKER IMPROVEMENT CLOSER KZZV TO KHLG. IMPROVEMENT TO VFR EARLY TUESDAY AS DRIER AIR WORKS INTO REGION. NORTHWEST WINDS 5 TO 10 KTS THROUGH THE PERIOD WITH GUSTS TO 20 KTS THIS AFTERNOON. .OUTLOOK.../TUESDAY THROUGH SATURDAY/... THE NEXT CHANCE FOR GENERAL RESTRICTIONS IS EXPECTED WITH THURSDAY LOW PRESSURE. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && $$

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.