Area Forecast Discussion
Issued by NWS Mt. Holly, NJ

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000 FXUS61 KPHI 020100 AFDPHI AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 900 PM EDT TUE SEP 1 2015 .SYNOPSIS... HIGH PRESSURE TRIES TO BUILD INTO THE AREA THROUGH THURSDAY. BUT A WEAK SURFACE TROUGH WILL REMAIN ACROSS THE EAST COAST THROUGH THURSDAY, UNTIL A BACKDOOR COLD FRONT PUSHES ACROSS THE AREA THURSDAY NIGHT INTO FRIDAY. HIGH PRESSURE WILL BUILD ACROSS THE REGION FROM THE NORTH SATURDAY THROUGH MONDAY. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/... AFTER A HOT, STEAMY DAYTIME, A MILD AND MUGGY OVERNIGHT IS EXPECTED FOR THE REGION. OTHER THAN SOME HOURLY TEMPERATURE ADJUSTMENTS ACROSS OUR NORTHERN ZONES LATE THIS EVENING, THE OVERNIGHT FORECAST LOOKS ON TRACK AS A LITTLE BIT OF CIRRUS BEGINS TO FILTER IN ACROSS THE AREA FROM THE SOUTHWEST. WINDS WILL DIMINISH, BECOMING LIGHT AND VARIABLE THROUGH THE OVERNIGHT. OTHERWISE, TONIGHT WILL BE SIMILAR TO THE PAST SEVERAL NIGHTS, BUT WITH SOME CIRRUS MOVING IN, TEMPS MAY END UP STAYING A DEGREE OR TWO WARMER. EVEN WITH THE CLOUDS MOVING IN, THEY WILL BE HIGH ENOUGH THAT WE WILL SEE SOME GOOD RADIATIONAL COOLING TAKE PLACE. WITH THE DEWPOINTS REMAINING HIGH, IN THE 60S/70S OVERNIGHT, AND TEMPERATURES DROPPING DOWN INTO THAT SAME RANGE, THERE WILL BE THE POSSIBILITY OF PATCHY FOG ACROSS THE REGION. && .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH 6 PM WEDNESDAY/... SUMMER WILL CONTINUE ITS MARCH INTO SEPTEMBER WITH TEMPERATURES ONCE AGAIN SOARING INTO THE 90S. THE MID LEVEL RIDGE STARTS TO BREAK DOWN AND BECOMES A BIT TROUGHY. AT THE SURFACE, WE WILL SEE A TROUGH REMAIN ACROSS OUR AREA. WE SHOULD SEE A SEA/BAY BREEZE DEVELOP ONCE AGAIN AND THERE IS THE POSSIBILITY THAT A SHOWER MAY SPARK ALONG THE BOUNDARY AS IT MOVES INLAND. BEST CHANCES WILL AGAIN BE ACROSS SOUTHERN DELAWARE AND THE SOUTHERN EASTERN SHORE. && .LONG TERM /WEDNESDAY NIGHT THROUGH TUESDAY/... A CHANCE FOR UNSETTLED WEATHER FOR THE END OF THE WORK WEEK, FOLLOWED BY A QUIET WEEKEND AND BEGINNING OF NEXT WEEK. THE WEAK SURFACE TROUGH ACROSS THE EAST COAST REMAINS IN PLACE WEDNESDAY NIGHT INTO THURSDAY, BEFORE A BACKDOOR COLD FRONT PUSHES THROUGH THE AREA THURSDAY NIGHT INTO FRIDAY. LITTLE PRECIPITATION IS EXPECTED WEDNESDAY NIGHT INTO EARLY THURSDAY DESPITE THE SURFACE TROUGH BEING IN PLACE. THE EXCEPTION TO THIS IS OUR FAR SOUTHWESTERN COUNTIES WHICH WILL BE CLOSEST TO A PASSING SHORT WAVE TO OUR SOUTH. THE MAIN PERIOD FOR PRECIPITATION WILL LATE THURSDAY AFTERNOON INTO FRIDAY. THE BACKDOOR COLD FRONT APPROACHES THE AREA FROM THE NORTH THURSDAY AFTERNOON, THEN PUSHES INTO THE AREA THURSDAY NIGHT, THEN SLOWLY SLIDES THROUGH THE AREA DURING THE DAY FRIDAY. PRECIPITATION AMOUNTS ARE FORECAST TO BE FAIRLY LIGHT, ALTHOUGH FRIDAY MAY SEE THE HEAVIEST RAINFALL AMOUNTS AS PW VALUES INCREASE TO 1.5-1.75 INCHES. ONCE THE FRONT PUSHES SOUTH OF THE AREA FRIDAY NIGHT, HIGH PRESSURE WILL BUILD BACK ACROSS THE EAST COAST FROM THE NORTH FROM SATURDAY THROUGH MONDAY, WHICH WILL PROVIDE DRY WEATHER ACROSS THE AREA. TEMPERATURES THURSDAY WILL BE WELL ABOVE NORMAL, BEFORE COOLING OFF SLIGHTLY FRIDAY INTO SATURDAY, FOLLOWED BY A WARMING TREND SUNDAY INTO MONDAY. && .AVIATION /01Z WEDNESDAY THROUGH SUNDAY/... THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY AND SURROUNDING AREAS. TONIGHT...SKIES WILL CLEAR WITH ONLY SOME CIRRUS REMAINING AROUND THE REGION. WINDS WILL DIMINISH THROUGH LATE EVENING AND BECOME LIGHT AND VARIABLE OVERNIGHT. WITH RELATIVELY CLEAR SKIES AND LIGHT WINDS, WE WILL SEE FOG DEVELOP AT THE TERMINALS, WITH MVFR/IFR VSBYS OCCURRING LATE TONIGHT INTO WEDNESDAY MORNING. WEDNESDAY...ANY LINGERING FOG SHOULD DISSIPATE AND CLEAR OUT BY MID-MORNING, WITH VFR CONDITIONS EXPECTED THEREAFTER. WINDS WILL REMAIN FAIRLY LIGHT THROUGH THE DAY WITH MOSTLY A SOUTH TO SOUTHWEST COMPONENT, AROUND 10 KNOTS OR LESS. SOME SCATTERED DECKS AROUND 5000FT MAY DEVELOP WITH DAYTIME HEATING. OUTLOOK... WEDNESDAY NIGHT-MAINLY VFR. THURSDAY-FRIDAY...MAINLY VFR. SCATTERED SHOWERS OR THUNDERSTORMS POSSIBLE, WHICH MAY LOWER CIGS AND/OR VSBYS, ESPECIALLY FRIDAY. FRIDAY NIGHT-SUNDAY NIGHT...MOSTLY VFR. GUSTY E-NE WINDS AROUND 15-20 KNOTS FRIDAY AND SATURDAY AFTERNOON. && .MARINE... SUB-ADVISORY CONDITIONS EXPECTED TO CONTINUE ON THE AREA WATERS. SEAS WILL BE AROUND 2 FEET THROUGH WEDNESDAY. WINDS WILL BE OUT OF THE SOUTH AROUND 5 TO 10 KNOTS, WITH SOME GUSTS AROUND 15 KNOTS THROUGH THE AFTERNOON. OUTLOOK... WEDNESDAY NIGHT...SUB-ADVISORY CONDITIONS EXPECTED. THURSDAY-THURSDAY NIGHT...SUB-ADVISORY CONDITIONS EXPECTED AS A BACKDOOR COLD FRONT MOVE ACROSS THE WATERS. FRIDAY-SATURDAY NIGHT...SEAS BEGIN TO BUILD TO SMALL CRAFT ADVISORY LEVELS WITH THE EASTERLY FETCH BEHIND THE BACKDOOR COLD FRONT DURING THE DAY FRIDAY AND CONTINUE INTO SATURDAY. WINDS MAY APPROACH SMALL CRAFT ADVISORY LEVELS BEHIND THE BACKDOOR COLD FRONT FRIDAY NIGHT. SUNDAY-SUNDAY NIGHT...SEAS EXPECTED TO SUBSIDE BACK BELOW SMALL CRAFT ADVISORY CONDITIONS. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...NONE. NJ...NONE. DE...NONE. MD...NONE. MARINE...NONE. && $$ SYNOPSIS...ROBERTSON NEAR TERM...KLINE/MEOLA SHORT TERM...MEOLA LONG TERM...ROBERTSON AVIATION...KLINE/ROBERTSON/MEOLA MARINE...ROBERTSON/MEOLA

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