


Area Forecast Discussion
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
212 FXUS61 KLWX 070114 AFDLWX Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 914 PM EDT Fri Jun 6 2025 .SYNOPSIS... A cold front will slowly settle southward toward the area through Saturday, then meander across the Mid-Atlantic through Monday. A stronger cold front will cross the area on Tuesday, followed by high pressure Wednesday and Thursday. && .NEAR TERM /THROUGH TONIGHT/... Aside from a few showers/decaying thunderstorms, most areas have dried out as the sun has set and we lost the instability that drove the thunderstorms we had earlier this evening. A few waves of light drizzle/showers may occur overnight, but chances are generally AOB 30 percent for most areas. Chances do increase by the early morning hours on Saturday, when a weak impulse of shortwave energy pivots through the region. Some patchy fog could develop if there are enough breaks in the clouds overnight. Low temperatures will be in the 60s for most areas. && .SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/... The frontal will settle into the area on Saturday. A wave of low pressure will likely move along the front accompanied by a broad shortwave trough aloft. There is some spread in guidance regarding precipitation timing and coverage, so future PoPs may need to be raised. But there is some hint that fairly widespread showers move across the area during the morning hours. Then there may be a bit of a break until instability can build to support additional showers and thunderstorms, which may be rather scattered in nature. The greatest chance for this redevelopment will be along and south of the front, where there could also be a stronger storm with gusty winds. Highs should reach the upper 70s to 80s, especially if there are breaks in the clouds. Activity should push off to the south through the evening along with the front. Additional showers could arrive during the second half of the night ahead of the next wave. This next wave will bring widespread showers and embedded thunderstorms Sunday. The front will attempt to lift back north, with some stronger thunderstorms possible near and south of the boundary. Locally heavy rain along the boundary could also pose an isolated flooding threat. The additional cloud cover will likely hold temperatures in the 70s. Precipitation chances should dwindle Sunday night as the wave moves to the east. && .LONG TERM /MONDAY THROUGH FRIDAY/... A weak wave of low pressure moves offshore early Monday, then a frontal boundary over the OH Valley slowly sags south toward the central Appalachians and Mid-Atlantic. The first half of Monday looks dry as the area is in between systems, with building clouds through the day. Highs Monday reach the low to mid 80s. The most active weather period next week likely happens from Monday night into Tuesday afternoon as the front moves into our area, then a wave of low pressure develops along the front. The low remains weak, though it does organize as it tracks northeast toward southern NJ. Widespread showers and scattered thunderstorms are forecast to develop, with some locally heavy rainfall possible. Additionally, depending on the timing of when the low moves through there could be a threat of strong to severe thunderstorms. There is a lot of uncertainty still, but something to monitor in the days ahead. A cold front sweeps through Tuesday night, bringing dry conditions through the end of next week. Mid-level ridging builds toward the region during the second half of next week, ushering in a period of true summertime temperatures. Highs in the upper 80s Thursday reach the low 90s or higher for Friday into next weekend. && .AVIATION /01Z SATURDAY THROUGH WEDNESDAY/... For much of the area, any showers have pretty much ended with sunset this evening. However, a few showers remain near CHO, and perhaps even some thunder. Looking like this activity should stay outside of the 10 mile ring, but could be close over the next hour or so. Shower chances will continue to dwindle the rest of the evening into the overnight. Depending on how much clearing is able to occur, some patchy fog may develop late tonight into early Saturday morning. For BWI and MTN, some MVFR to near-IFR CIGs start to work in from the east. Unclear yet if these make it all the way to those terminals, but will be quite close. For now, leaving 1500 ft MVFR CIGs in the TAF, but could potentially see it dropping lower. WIll have to re-evaluate with the next TAF package. Additional showers will likely move across the area Saturday morning. There may be a break, then additional scattered showers and thunderstorms will develop during the afternoon, mainly near and south of an advancing front. Given questions about coverage, have just included a PROB30 group for now, with this activity likely moving south by early evening. Widespread shower and embedded thunderstorms are forecast Sunday with a wave of low pressure along the stalled front. Sub-VFR ceilings are also possible along and north of the stalled front which could last into Sunday night. Periods of showers and thunderstorms are forecast to move across the area Monday afternoon through Tuesday afternoon. While conditions remain VFR outside of convection, any shower/storm that moves over a terminal could produce brief sub-VFR conditions. && .MARINE... Generally sub-SCA conditions are expected through Saturday night. Winds will shift to the north Saturday as a front sinks through the area. Scattered thunderstorms may develop Saturday afternoon and evening over the waters, with SMWs potentially being needed as a result. Southeast winds will increase Sunday as a wave of low pressure develops. Advisories may be needed. Thunderstorms will be possible as well. Winds are forecast to remain below SCA levels for the start of next week. Still, the weather pattern remains active with showers and thunderstorms each day, and these could pose a threat to mariners from gusty winds and lightning strikes. && .TIDES/COASTAL FLOODING... A wave of low pressure along a stalled front will increase onshore to southeast flow Sunday into Monday. Some locations may approach minor flood levels during this time. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...None. MD...None. VA...None. WV...None. MARINE...None. && $$ SYNOPSIS...ADS NEAR TERM...CJL SHORT TERM...ADS LONG TERM...KRR AVIATION...ADS/CJL/KRR MARINE...ADS/CJL/KRR TIDES/COASTAL FLOODING...ADS