Area Forecast Discussion
Issued by NWS Sterling, VA

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942 FXUS61 KLWX 261407 AFDLWX Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 1007 AM EDT Fri Jul 26 2024 .SYNOPSIS...
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A cold front will move south of the area later today. Weak high pressure will build to our north today and Saturday, before becoming established offshore early next week. Precipitation chances return by mid to late next week.
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&& .NEAR TERM /THROUGH TONIGHT/...
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Latest surface analysis observes a weak cold front situated across the southern-most portions of the forecast area this morning. Localized patches of fog across central VA have since began to lift, with low and mid-level clouds lingering across most of the area. These clouds will persist throughout the early portion of the day before clearing more from north to south later tonight when the cold front becomes more displaced to the south and high pressure builds in from the Great Lakes region. Cannot rule out an isolated shower or thunderstorm across portions of central VA later today given the slowness of the progression of the weak cold front. This may allow for some low-level moisture to stick around before moving further south. Afternoon highs will top out in the mid to maybe even some upper 80s across the lower elevations. Overnight lows will drop down into the low to mid 60s for most areas aside from the Allegheny Front where mid 50s may be possible given the weak flow aloft.
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&& .SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/...
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High pressure will dominate the area this weekend. This will allow for mostly sunny skies and lower humidity to persist through Sunday. Air temperatures will still be slightly above normal with low 90s expected across the lower elevations. Winds will remain light and variable as the high lingers around the region. Overnight lows will be in the low to mid 60s Saturday night before increasing slightly for Sunday night as a warmer, moist airmass moves in for the start of the workweek. Cannot rule out a stray shower across the far southwest areas by late Sunday night into early Monday morning.
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&& .LONG TERM /MONDAY THROUGH THURSDAY/... To start off the workweek, high pressure will continue to move offshore as return flow ushers in increasing moisture from the southwest. Precipitation chances are best for those west of the Blue Ridge with the I-95 corridor north of Fredericksburg expected to remain dry. High temperatures will be in the upper 80s to low 90s for most with overnight lows in the upper 60s to 70s. An upper level trough pivoting over the east coast will bring daily shower and thunderstorm chances Tuesday through the remainder of the long term period. A general warming pattern will result in temperatures gradually warming each day. Highs on Tuesday will be in the 80s for most with high temperatures on Thursday warming to the low to mid 90s. Overnight low temperatures will be in the upper 60s to mid 70s each night. && .AVIATION /14Z FRIDAY THROUGH TUESDAY/...
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Winds will shift to the NE and gust to about 15 kt this morning before diminishing this afternoon. Prevailing VFR conditions are expected Monday and Tuesday, with southerly winds blowing 5 to 10 knots and gusting up to 15 knots. Sub-VFR conditions are possible on Tuesday during possible precipitation in the afternoon.
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&& .MARINE... A pressure surge behind the cdfnt this morning will cause winds to strengthen and gust to about 20kt. Have issued a SCA for this morning. Winds become light and variable this afternoon through the weekend. Southerly winds on Monday will gust right at or below SCA criteria in the evening. Winds remain out of the south on Tuesday, with additional SCAs possible in the afternoon. && .TIDES/COASTAL FLOODING...
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Weak return flow as high pressure lingers to the north today into the weekend will allow for some of the more sensitive tidal locations like Annapolis to reach Action Stage today and Saturday and maybe even touching Minor Flood Stage by Sunday`s high tide cycle.
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&& .LWX WATCHES/WARNINGS/ADVISORIES... DC...None. MD...Small Craft Advisory until 1 PM EDT this afternoon for MDZ008. VA...None. WV...None. MARINE...Small Craft Advisory until 1 PM EDT this afternoon for ANZ530>534-537>543. && $$ SYNOPSIS...LFR NEAR TERM...ADM SHORT TERM...LFR/ADM LONG TERM...AVS AVIATION...AVS/LFR/ADM MARINE...AVS/LFR/ADM TIDES/COASTAL FLOODING...LWX