686  
FXUS61 KPHI 142331  
AFDPHI  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ  
731 PM EDT TUE OCT 14 2025  
   
SYNOPSIS
 
 
LOW PRESSURE OFF THE COAST CONTINUES TO MOVE AWAY INTO THE NORTH  
ATLANTIC. A COLD FRONT WILL MOVE THROUGH THE AREA ON WEDNESDAY,  
WITH STRONG HIGH PRESSURE BUILDING IN TO CLOSE OUT THE WEEK. A  
LOW PRESSURE SYSTEM MAY APPROACH FROM THE WEST LATE THIS WEEKEND  
INTO EARLY NEXT WEEK.  
 

 
   
NEAR TERM /THROUGH WEDNESDAY/
 
 
THE COASTAL LOW WHICH HAS IMPACTED THE MID-ATLANTIC REGION OVER  
THE PAST SEVERAL DAYS HAS FINALLY MOVED OUT TO SEA AS HIGH  
PRESSURE IS CENTERED OVER THE GREAT LAKES. THE REGION REMAINS CAUGHT  
IN BETWEEN SYSTEMS AS STUBBORN CLOUDINESS PERSISTS. CLOUD COVER  
WILL CONTINUE TO DWINDLE AWAY THROUGH THE OVERNIGHT HOURS. PARTLY  
CLOUDY SKIES SHOULD PREVAIL OVERNIGHT FOR MOST, ALTHOUGH CLOUDS  
MAY LINGER A BIT LONGER TOWARD THE COAST. ALL IN ALL, DRY  
WEATHER IS ANTICIPATED. WINDS WILL ALSO SUBSIDE OVERNIGHT TO  
AROUND 10-20 MPH. LOWS TONIGHT FALL INTO THE MID 40S TO MID 50S.  
 
FOR WEDNESDAY, MORE IN THE WAY OF SUNSHINE IS EXPECTED  
THROUGHOUT THE COURSE OF THE DAY ASIDE FOR SOME HIGH CLOUDS. IN  
THE MORNING, A COLD FRONT APPROACHES FROM THE NORTH BEFORE  
CROSSING THROUGH THE AREA DURING THE AFTERNOON. WINDS WILL ONCE  
AGAIN BECOME INCREASINGLY GUSTY AFTER THE FRONT PASSES WHERE  
NORTHWEST WINDS MAY GUST UP TO 30 MPH IN THE AFTERNOON. DESPITE  
THE FRONTAL PASSAGE, AFTERNOON HIGHS WILL BE NOTICEABLY WARMER  
WITH HIGHS TOPPING OUT IN THE MID 60S TO LOW 70S FOR MOST, WITH  
50S IN THE POCONOS.  
 

 
   
SHORT TERM /WEDNESDAY NIGHT THROUGH THURSDAY NIGHT/
 
 
COLD ADVECTION WILL PERSIST THRU WEDNESDAY NIGHT AS HIGH  
PRESSURE BUILDS IN FROM CANADA, RESULTING IN A STEADY  
NORTHWESTERLY WIND. SKIES SHOULD BE MOSTLY CLEAR, AND LOWS WILL  
DROP DOWN INTO THE UPPER 30S AND LOW 40S.  
 
WITH THE HIGH TAKING ITS TIME BUILDING INTO THE AREA, WE'LL  
KEEP A NORTHWESTERLY GRADIENT, SO THE NORTHWEST WINDS WILL  
REMAIN STEADY AND OCCASIONALLY GUSTY ON THURSDAY. OTHERWISE,  
SKIES WILL BE MOSTLY SUNNY, BUT TEMPERATURES WILL ONLY RECOVER  
TO THE UPPER 50S AND LOWER 60S.  
 
IT STILL APPEARS THE GRADIENT WILL REMAIN TIGHT ENOUGH THURSDAY  
NIGHT, WITH THE HIGH CENTER STILL OFF TO THE NORTHWEST, SUCH  
THAT WE'LL MOSTLY AVOID A FROST/FREEZE THREAT IN LOCATIONS WHERE  
THE GROWING SEASON CONTINUES. THE STEADY BREEZE WILL REMAIN,  
THOUGH A BIT WEAKER THAN WEDNESDAY NIGHT. LOWS THURSDAY NIGHT IN  
THE MID 30S TO LOWER 40S.  
 

 
   
LONG TERM /FRIDAY THROUGH TUESDAY/
 
 
HIGH PRESSURE FINALLY BUILDS OVERHEAD FRIDAY, ALLOWING WINDS TO  
RELAX MORE AS THE COLD ADVECTION FINALLY DWINDLES. ANOTHER  
MOSTLY SUNNY DAY SHOULD HELP TO BRING TEMPS UP A LITTLE, WITH  
HIGHS IN THE LOW TO MID 60S, EXCEPT UPPER 50S IN THE POCONOS.  
 
THE HIGHS SINKS TO OUR SOUTH ON FRIDAY NIGHT, WITH WARM  
ADVECTION BEGINNING ALOFT AS THE GRADIENT TURNS WESTERLY, THOUGH  
REMAINING LIGHT. SOME CLOUDS MAY FILTER INTO THE AREA AS WELL.  
LOWS FRIDAY NIGHT IN THE 40S.  
 
A WEAK WARM FRONTAL PASSAGE ON SATURDAY SHOULD BRING A BIT MORE  
CLOUD COVER, BUT ALSO NOTABLY WARMER TEMPERATURES. HIGHS  
SATURDAY IN THE MID 60S TO LOW 70S.  
 
WARM ADVECTION ON A SOUTHWESTERLY GRADIENT WILL CONTINUE  
SATURDAY NIGHT, BUT REMAINING DRY WITH HIGH PRESSURE STILL IN  
CONTROL AS IT DRIFTS OFF THE CAROLINA COAST. LOWS SATURDAY NIGHT  
IN THE UPPER 40S TO MID 50S.  
 
WARM ADVECTION PEAKS ON SUNDAY JUST AHEAD OF THE NEXT FRONTAL  
SYSTEM APPROACHING FROM THE WEST. CLOUDS WILL BE INCREASING,  
ALONG WITH THE RISK OF SHOWERS, BUT IT STILL SHOULD BE THE  
WARMEST DAY OF THE FORECAST PERIOD. HIGHS SUNDAY IN THE LOW TO  
MID 70S, EXCEPT 60S IN THE POCONOS.  
 
AFOREMENTIONED FRONT MOVES THROUGH SUNDAY NIGHT, WITH  
WIDESPREAD SHOWERS AND MAYBE EVEN SOME THUNDERSTORMS AND LOCALLY  
HEAVY RAIN, DEPENDING ON HOW THE DETAILS SET UP. LOWS SUNDAY  
NIGHT IN THE UPPER 40S TO MID 50S.  
 
HIGH PRESSURE STARTS BUILDING BACK IN MONDAY, WITH DECREASING  
CLOUDS AND PRECIP CHANCES. HIGHS MONDAY IN THE 60S, EXCEPT 50S  
IN THE POCONOS.  
 

 
   
AVIATION /00Z WEDNESDAY THROUGH SUNDAY/
 
 
THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG, KILG,  
KMIV, KACY AND SURROUNDING AREAS.  
 
TONIGHT...LINGERING MVFR CIGS THROUGH 02Z OR SO, EXCEPT FOR  
KACY, WHERE MVFR CIGS WILL LINGER INTO 08Z OR SO. VFR  
THEREAFTER. N-NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT OR SO,  
DIMINISHING FAIRLY QUICKLY TO LESS THAN 10 KT. MODERATE-HIGH  
CONFIDENCE.  
 
WEDNESDAY...VFR WITH SCT HIGH CLOUDS. NW WINDS 5 TO 10 KT IN THE  
MORNING, INCREASING TO 10 TO 15 KT WITH 20 TO 25 KT GUSTS IN THE  
AFTERNOON. HIGH CONFIDENCE.  
 
OUTLOOK...  
 
WEDNESDAY NIGHT THRU SATURDAY...VFR CONDITIONS SHOULD PREVAIL.  
 
SUNDAY...RESTRICTIONS LIKELY DEVELOPING LATE AS LOW CLOUDS AND  
RAIN MOVE IN AHEAD OF AN APPROACHING COLD FRONT.  
 

 
   
MARINE
 
 
THE SMALL CRAFT ADVISORIES ON THE ATLANTIC COASTAL WATERS ARE  
IN EFFECT THROUGH WEDNESDAY. THE SMALL CRAFT ADVISORIES ON THE  
DELAWARE BAY HAVE BEEN CANCELLED TODAY, HOWEVER A NEW SMALL  
CRAFT ADVISORY HAS BEEN ISSUED BEGINNING AT 4 PM ON WEDNESDAY.  
 
NORTHERLY WINDS AROUND 15-20 KT WITH GUSTS UP TO 25 KT WILL CONTINUE  
INTO TONIGHT BEFORE DIMINISHING AFTER MIDNIGHT. ON WEDNESDAY, NORTH-  
NORTHWEST WINDS AROUND 10-15 KT IN THE MORNING WILL INCREASE TO 15-  
20 KT IN THE AFTERNOON WITH GUSTS UP TO 25 KT FOLLOWING A FRONTAL  
PASSAGE. SEAS OF 6-10 FEET. FAIR WEATHER OUTSIDE OF SCA CONDITIONS.  
 
OUTLOOK...  
 
SMALL CRAFT ADVISORY CONDITIONS LOOK LIKELY AT TIMES WEDNESDAY  
NIGHT THRU THURSDAY NIGHT DUE TO WINDS AND/OR WAVES, AT LEAST  
ON THE OCEAN WATERS. DELAWARE BAY WILL NATURALLY HAVE MORE SUB-  
ADVISORY PERIODS.  
 
SUB-SCA CONDITIONS SHOULD BECOME MORE WIDESPREAD FRIDAY AND  
CONTINUE THRU SATURDAY.  
 
SUNDAY WILL SEE INCREASING SOUTHERLY WINDS AND SEAS BUILDING  
OVER 5 FEET. ADVISORY CONDITIONS LIKELY. RAIN DEVELOPING LATE  
SUNDAY.  
 

 
   
TIDES/COASTAL FLOODING
 
 
SURGE VALUES ARE SLOWLY SUBSIDING AS THE COASTAL STORM MOVES  
AWAY. HOWEVER, ONE FINAL HIGH TIDE CYCLE IS FORECAST TO REACH  
WIDESPREAD MINOR THIS AFTERNOON. THE COASTAL FLOOD ADVISORY  
REMAINS IN EFFECT FOR THE BACK BAYS OF OCEAN, ATLANTIC, CAPE  
MAY, AND SUSSEX COUNTIES, AND KENT (DE) FOR DELAWARE BAY UNTIL  
8 PM THIS EVENING. THEREAFTER, WINDS TURNING NORTHWEST SHOULD  
ALLOW WATER LEVELS TO SUBSIDE EVEN MORE. SOME MINOR FLOODING  
COULD LINGER IN OCEAN AND SUSSEX COUNTIES, BUT WILL SEE HOW  
THINGS TREND TODAY BEFORE MAKING ANY ADDITIONAL ADVISORY  
EXTENSIONS.  
 
NO TIDAL FLOODING IS EXPECTED FOR OUR EASTERN SHORE COUNTIES  
ALONG CHESAPEAKE BAY, OR THE TIDAL DELAWARE RIVER.  
 

 
   
PHI WATCHES/WARNINGS/ADVISORIES
 
 
PA...NONE.  
NJ...COASTAL FLOOD ADVISORY UNTIL 8 PM EDT THIS EVENING FOR NJZ020-  
022>027.  
DE...COASTAL FLOOD ADVISORY UNTIL 8 PM EDT THIS EVENING FOR  
DEZ002>004.  
MD...NONE.  
MARINE...SMALL CRAFT ADVISORY FROM 4 PM WEDNESDAY TO 6 AM EDT THURSDAY  
FOR ANZ430-431.  
SMALL CRAFT ADVISORY UNTIL 6 AM EDT THURSDAY FOR ANZ450>455.  
 

 
 

 
 
SYNOPSIS...DESILVA/GUZZO/RCM  
NEAR TERM...DESILVA/MPS  
SHORT TERM...RCM/STAARMANN  
LONG TERM...RCM/STAARMANN  
AVIATION...DESILVA/MPS/STAARMANN  
MARINE...DESILVA/STAARMANN  
TIDES/COASTAL FLOODING...  
 
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