Area Forecast Discussion
Issued by NWS Sterling, VA

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486 FXUS61 KLWX 080057 AFDLWX Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 857 PM EDT Fri Jun 7 2024 .SYNOPSIS... Dry through Saturday as high pressure builds over the region. A slow moving trough approaches from the Great Lakes Saturday night into Sunday leading to more unsettled conditions. && .NEAR TERM /THROUGH TONIGHT/...
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Earlier cloud cover is clearing out for most of the region as of early this evening. With high pressure overhead, mostly clear conditions are expected tonight as lows settle in the 50s to low 60s. Some of the high elevation valleys may dip into the upper 30s/low 40s.
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&& .SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/...
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A dry Saturday is expected as surface high pressure passes south of the area during the day, then over the western Atlantic Saturday night. Near normal temperatures in the upper 70s to lower 80s once again, with Saturday night lows a bit milder - in the low to mid 60s. A weak cold front looks to cross the area Sunday, bringing the next chance for showers and a few thunderstorms. Rain chances will be around 30-40pct, though any showers/storms look to remain isolated to scattered given the system lacks deep moisture. Highs Sunday afternoon reach the low to mid 80s, with 70s in the mountains. Dry conditions return Sunday night.
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&& .LONG TERM /MONDAY THROUGH FRIDAY/... High pressure will build briefly into the region on Monday. There is a slight chance of a shower or thunderstorm, mainly during the afternoon or early evening, as a front will not be too far to the east of the region. Highs middle 70s in the west and lower 80s in the east. Shower and thunderstorm chances will gradually increase Tuesday and into Wednesday as high pressure moves east and the front nearby becomes a warm front and connects to an approaching low pressure system from the southwest. This low is expected to move northeast into the mid-Atlantic later Tuesday into Tuesday night. An associated cold front trailing this low could bring a reinforcement of showers and thunderstorms Wednesday into Wednesday evening. Highs Tuesday middle to upper 70s. Highs Wednesday near 80 to lower 80s. By Thursday, the low pressure system and its associated cold front move east. This will allow for high pressure to develop and build in from the west. Dry conditions should ensue with high temperatures lower to middle 80s. && .AVIATION /01Z SATURDAY THROUGH WEDNESDAY/...
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VFR conditions are expected through the weekend as high pressure passes south of the area. NW wind gusts to 20 kts linger through 03Z. Lighter west to northwest winds around 10 knots are expected over the weekend. A weak cold front is forecast to cross the area Sunday, bringing isolated to scattered showers, and possibly a few thunderstorms. Outside of any showers/storms, VFR conditions are expected. VFR conditions Monday and Monday night. Winds northwest 5 to 10 knots through the period. VFR conditions for the most part Tuesday into Tuesday night. Any showers or drenching thunderstorm Tuesday into Tuesday evening could bring a brief period of MVFR conditions. Winds northwest becoming southeast 5 to 10 knots Tuesday into Tuesday night.
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&& .MARINE...
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A period of gusty NW winds is expected through about midnight. Sub-SCA winds are expected Saturday/Saturday night becoming southerly. A weak cold front crosses the local waters Sunday afternoon, bringing scattered showers and possibly a few thunderstorms. No marine hazards expected Monday through Tuesday night. Winds northwest 5 to 10 knots Monday through Tuesday. Winds becoming more southeast 5 to 10 knots Tuesday night. Any showers or drenching thunderstorms Tuesday could bring brief wind gusts over 30 knots.
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&& .LWX WATCHES/WARNINGS/ADVISORIES...
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DC...None. MD...None. VA...None. WV...None. MARINE...Small Craft Advisory until midnight EDT tonight for ANZ530>532- 536-538>542. Small Craft Advisory until 2 AM EDT Saturday for ANZ533-534- 537-543. Small Craft Advisory until 10 PM EDT this evening for ANZ535.
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&& $$ SYNOPSIS...CPB/KRR NEAR TERM...DHOF/CPB/KRR SHORT TERM...CPB/KRR LONG TERM...KLW AVIATION...KLW/DHOF/CPB MARINE...KLW/DHOF/CPB