756 FXUS61 KPHI 011611 AFDPHI Area Forecast Discussion National Weather Service Mount Holly NJ 1211 PM 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 /16Z 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... Wind gusts will continue to subside through this afternoon, therefore the Small Craft Advisory was allowed to expire at noon. An occasional gust near 25 knots may occur, especially near the beaches for another hour or two, but widespread gusts will remain below advisory levels. 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...None. && $$ SYNOPSIS...MJL/RCM NEAR TERM...MJL SHORT TERM...MJL/RCM LONG TERM...MJL/RCM AVIATION...MJL MARINE...MJL/Robertson