945 FXUS61 KLWX 110100 AFDLWX Area Forecast Discussion National Weather Service Baltimore MD/Washington DC Issued by National Weather Service State College PA 900 PM EDT Tue Jun 10 2025 .SYNOPSIS... High pressure will build across the area Wednesday through Friday with above normal temperatures expected and increased humidity by the end of the week. Next chance of showers and storms will arrive later this week and especially into the weekend with a slow moving front pushing through the region. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/... Showers continue to fizzle out as of 01Z. Winds will go light tonight with gradually clearing skies. Some of the valleys could see some fog tonight, especially around the rivers and sheltered valleys. Lows will be in the 50s to low 60s for most, with upper 60s along the waters and metros. && .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH THURSDAY NIGHT/... Weak high pressure will build over the region Wednesday and Thursday with dry conditions expected throughout. Temperatures turn warmer on Thursday as southwest winds develop and 925 and 850 mb temps rise to 25C/18C respectively, but humidity remains on the lower side. && .LONG TERM /FRIDAY THROUGH TUESDAY/... High pressure is expected to weaken on Friday to allow for low pressure to form on the leeside of the Appalachians. This low, along with a backdoor cold front approaching from the north, will spawn shower and thunderstorm chances Friday afternoon and could linger through Friday night and much of the day Saturday. The backdoor front appears to stall across the heart of our region Saturday, Saturday night and into most of Sunday. There could be some north and south oscillation of this front; nonetheless, next weekend looks active and west for much of our region. There is a hint of an area of high pressure that could develop over New England and build south along the East US Coast late Sunday and Sunday night. Should this happen, this would push a lot of our shower and thunderstorm chances into the western half of our region late Sunday, Sunday night and into Monday. Although it doesn`t look like it is going to be a dry Monday, early next week, it seems that the convection coverage could be less and hopefully less intense. High temperatures on Friday appear to be quite warm with many places hitting or exceeding the 90 degree mark, especially east of the Blue Ridge. This would be prior to developing convection Friday afternoon. Lows Friday night should get into the middle 60s. Highs on Saturday through Monday will be cooler due to cloud cover and multiple rounds of convection. Still, temperatures will be near seasonable with highs in the upper 70s to lower 80s. && .AVIATION /01Z WEDNESDAY THROUGH SUNDAY/... Light winds and clearing skies could lead to some fog development later this evening, with the best chance near MRB and CHO. However, not confident enough to include in the TAFs at this time. VFR conditions expected through Thursday as high pressure builds over the region. Expect light winds during this time. VFR conditions possible at all terminals Friday morning, before introducing an MVFR or IFR possibility due to heavy or widespread showers and thunderstorms Friday afternoon and continuing through Saturday night. Winds light and variable through the period. Winds may be more north to northeasterly at locations to the north of the backdoor front, while south to southeasterly winds expected at locations to the south of the front. && .MARINE... No marine hazards are expected through Thursday as high pressure builds over the region. Any marine hazards Friday afternoon through Saturday night would likely be in response to showers and thunderstorms that develop along and ahead of a cold front/stationary front through the period. These hazards would be Special Marine Warnings or Marine Weather Statements at best. Winds generally northerly in direction to the north of the front. Winds southerly to the south of the front. && .TIDES/COASTAL FLOODING... The more sensitive tidal sites could continue to hit action stage during the higher of the 2 high tide cycles the next couple of days. But overall, anomalies will slowly drop. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...None. MD...None. VA...None. WV...None. MARINE...None. && $$ SYNOPSIS...CJL NEAR TERM...CJL/CPB SHORT TERM...LFR/CJL/CPB LONG TERM...KLW AVIATION...LFR/KLW/CJL/CPB MARINE...LFR/KLW/CJL/CPB TIDES/COASTAL FLOODING...LWX