933
FXUS61 KPHI 011318
AFDPHI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
918 AM EDT SUN JUN 1 2025
SYNOPSIS
HIGH PRESSURE BUILDS INTO THE OHIO VALLEY ON SUNDAY THEN
ARRIVES IN OUR AREA LATER MONDAY THROUGH WEDNESDAY. A MORE
UNSETTLED WEATHER PATTERN TAKES HOLD LATE WEEK.
NEAR TERM /THROUGH TONIGHT/
THE FIRST DAY OF METEOROLOGICAL SUMMER WILL BEGIN ON A COOL NOTE
WITH TEMPERATURES LARGELY ABOUT 10 DEGREES BELOW CLIMO. HIGH
TEMPS WILL REACH THE MID 60S TO LOW 70S WITH UPPER 50S FOR THE
POCONOS. WINDS WILL BE A BIT ON THE BREEZY SIDE WITH LOW
PRESSURE MOVING NORTH AND EAST OUT OF NEW ENGLAND AND HIGH
PRESSURE BUILDING IN FROM THE GREAT LAKES. EXPECT WEST WINDS
10-15 MPH WITH GUSTS UP TO 20-25 MPH. CAN'T FULLY RULE OUT A
SPOT SHOWER LATE AFTERNOON/EVENING AS A WEAK EMBEDDED SHORTWAVE
ALOFT PIVOTS AROUND THE UPPER LOW IN NEW ENGLAND. SOME HIGH RES
GUIDANCE DOES HAVE SOME SPOTTY SHOWERS AROUND, BUT A VERY DRY
COLUMN OF AIR LIKELY MEANS MOST OF THE PRECIP WILL NOT REACH THE
GROUND.
HIGH PRESSURE WILL SHIFT OVER THE OHIO RIVER VALLEY TONIGHT WITH
BETTER CONTROL OVER THE MID ATLANTIC. WINDS BECOME LIGHT OUT OF
THE WEST WITH OVERNIGHT LOWS IN THE LOW 40S TO LOW 50S.
SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/
HIGH PRESSURE GRADUALLY CONTINUES BUILDING THROUGH MONDAY
NIGHT, ENDING UP ALMOST DUE SOUTH OF US BY EARLY TUESDAY. THIS
WILL PROMOTE GENERALLY DRY CONDITIONS, BUT WITH UPPER TROUGH
LINGERING OVERHEAD, WILL PROBABLY SEE SOME CLOUDS AT TIMES,
ESPECIALLY DURING THE AFTERNOON HOURS. AS HIGH PRESSURE
GRADUALLY SLIDES SOUTH AND EAST, A SLOW WARMING TREND WILL GET
UNDERWAY. TEMPS ON MONDAY WILL WARM INTO THE LOW/MID 70S WITH
80S BY TUESDAY. OUR COOL NIGHTS WILL GRADUALLY GET WARMER AS
WELL, WITH UPPER 40S TO MID 50S MONDAY NIGHT AND UPPER 50S TO
LOW 60S TUESDAY NIGHT.
LONG TERM /WEDNESDAY THROUGH SATURDAY/
UPPER RIDGE BUILDS ACROSS THE REGION THROUGH MUCH OF THE LONG
TERM, WITH SURFACE HIGH PRESSURE POSITIONING ITSELF OFF THE
SOUTHEASTERN US COAST. THUS, WE SHOULD SEE SUBSTANTIAL WARMING,
AND IN FACT MIGHT GET OUR FIRST 90-DEGREE DAY BY LATER IN THE
WEEK. HIGHS REACH THE UPPER 80S WEDNESDAY, THEN REALLY FLIRT
WITH 90 THURSDAY BEFORE POSSIBLY DROPPING BACK A BIT FRIDAY AND
SATURDAY WITH A COLD FRONT POSSIBLY SLIPPING SOUTH INTO THE
AREA. DRY CONDITIONS WILL PERSIST THROUGH MIDWEEK WITH A MORE
UNSETTLED PATTERN TAKING SHAPE LATE WEEK WITH WEAK TROUGHING
DEVELOPING ALOFT.
AVIATION /13Z SUNDAY THROUGH THURSDAY/
THE FOLLOWING DISCUSSION IS FOR KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY AND SURROUNDING AREAS.
SUNDAY... VFR EXPECTED. MOSTLY CLEAR. WEST WINDS INCREASING BY
MID MORNING TO 10-15 KTS WITH A FEW GUSTS AROUND 20-25 KTS.
SUNDAY NIGHT...VFR. LIGHT WESTERLY WINDS LESS THAN 10 KTS.
OUTLOOK...
MONDAY THROUGH THURSDAY...VFR.
MARINE
SCAS WERE EXTENDED FOR THE DELAWARE BAY AND NORTHERN WATERS
THROUGH 12 PM AS WINDS REMAIN NEAR 25 KNOT. BY EARLY AFTERNOON,
WSW WINDS SHOULD BEGIN TO DIMINISH BELOW CRITERIA, AROUND 15
KTS GUSTING TO 20 KTS. WINDS DIMINISH TO AROUND 10 KTS OR LESS
SUNDAY NIGHT.
OUTLOOK...
MONDAY THRU WEDNESDAY...SUB-SCA WITH FAIR WEATHER.
THURSDAY...SCA CONDITIONS POSSIBLE. SSW WINDS GUSTING TO AROUND
20 KTS.
RIP CURRENTS...
FOR SUNDAY...WEST-SOUTHWEST WINDS AROUND 10-15 MPH WITH BREAKING
WAVES AROUND 1-2 FEET AND A PERIOD OF 6-7 SECONDS. AS A RESULT,
THERE IS A LOW RISK FOR DANGEROUS RIP CURRENTS FOR ALL BEACHES.
FOR MONDAY...WEST WINDS AROUND 5-10 MPH IN THE MORNING WILL
BECOME SOUTHERLY IN THE AFTERNOON. BREAKING WAVES AROUND 1-2
FEET AND A PERIOD OF 6-7 SECONDS. AS A RESULT, THERE IS A LOW
RISK FOR DANGEROUS RIP CURRENTS FOR ALL BEACHES.
FOR SPECIFIC BEACH FORECASTS, VISIT WEATHER.GOV/BEACH/PHI
PHI WATCHES/WARNINGS/ADVISORIES
PA...NONE.
NJ...NONE.
DE...NONE.
MD...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL NOON EDT TODAY FOR ANZ430-431-
450>452.
SYNOPSIS...MJL/RCM
NEAR TERM...MJL
SHORT TERM...MJL/RCM
LONG TERM...MJL/RCM
AVIATION...MJL
MARINE...MJL/ROBERTSON
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page