Area Forecast Discussion
Issued by NWS Wakefield, VA

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000 FXUS61 KAKQ 211343 AFDAKQ Area Forecast Discussion National Weather Service Wakefield VA 943 AM EDT SAT MAY 21 2016 .SYNOPSIS...
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Low pressure will track off the North Carolina coast this afternoon. A trough of low pressure will then linger over the area Sunday and Monday. This trough will gradually move offshore Monday night into Tuesday.
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Primary/wk sfc lo pres was located invof SE OH lt this mrng...w/ secondary/cstl lo pres just w of the ern NC outer banks. The primary lo will transition to the cstl lo through this aftn. That cstl lo is xpcd to track se of VA bch this aftn...then cont to the ENE thereafter. Widespread area of ra (ocnlly +ra) will be moving through ern VA-lwr SE MD through midday. Residual moisture will rmn in wake of lo pres exiting the cst the rest of the day. Some breaks in the clds psbl...mnly alg wrn and srn periphery of fa...rmng cloudy and cool w/ POPs lwrg to <50% by mid-lt this aftn. Wnds inland avg N...mnly aob 10 mph...while gusty NE to 20-25 mph nr the cst (esp on the delmarva) become N (lt). Hi temps fm the l-m60s N/central areas to l70s far S and SW.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH MONDAY/... The Great Lakes low digs into the Mid-Atlantic tonight into Sunday, with a shortwave trough dropping through the base of the parent trough Sunday. Moist and weak low-level northerly flow will maintain low clouds tonight. PoPs tonight range from 30-40% n to 20-30% s for occasional light rain or drizzle. Lows range from the mid to upper 50s. PoPs increase Sunday as the secondary shortwave tracks across the area ranging from ~60% across the Piedmont and interior coastal plain to 30-40% along the coast. Additional QPF should be minimal due to a lack of deep lift generally averaging aob 0.10". Highs Sunday range from the low/mid 60s nw to the mid/upper 60s se. The upper system gradually pivots ewd Sunday night and Monday. Sensible weather conditions remain mostly cloudy to overcast and unsettled with 30-40% PoPs. Rainfall should become more showery Monday as the upper cold pool moves overhead. Highs Monday moderate into the upper 60s to low 70s after morning lows in the low/mid 50s. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... A return to conds more typical of late May xpcd in the extended pd acrs the fa. Upr lvl lo pres will be moving ne and away fm the rgn Mon ngt through Tue...then is replaced a hi pres sfc-aloft building invof se conus by lt next wk. Contd slo erosion of cldns and lwrg of pops Mon ngt-Tue. Fm Wed-Fri...mnly diurnal lo end POPs w/ vrb clds/ partly cloudy conds. Hi temps Tues in the m-u70s...then mnly l-m80s Wed-Fri (though only 70s at the immediate cst each day). Lo temps mnly in the m50s Mon ngt...u50s Tue ngt...then l-m60s Wed/Thu ngts. && .AVIATION /14Z SATURDAY THROUGH WEDNESDAY/... A couple areas of low pressure will bring rain to the region today. One low will move ne along the nc cst then out to sea, while the other low will track fm srn oh into srn pa. vfr/mvfr conditions very early this morng, will quickly become ifr conditions later this morng acrs all taf sites, as the heavier rains move ewrd into the area. A few hours of moderate to heavy rain can be expected today fm 10z to 17z. Rain will taper off or end fm sw to ne this aftn into early this eveng, but IFR conditions will continue into Sun morng. Winds will be fm the ene today, and may be gusty at times where the pressure gradient will be tightest...mainly ORF and SBY. OUTLOOK...Conditions will be slow to improve with an upper level trof deepening along the Eastern Seaboard thru Sun night which moves just off the coast Mon. Chances for showers are in the fcst thru Mon. It is too early to pin down aviation conditions Sun thru Mon. The MAVMOS suggests IFR and METMOS mainly MVFR. The truth may be in between. High pressure builds over the area with mainly dry weather Tue aftn and Wed. && .MARINE... During low pres area will move ne along the nc cst then out to sea, while the other low will track fm srn oh into srn pa. Expecting ese winds to increase (to lo end SCA) this morng, as the cstl lo tracks ne along the nc cst. Then, as that lo moves ne and out to sea this eveng into Sun morng...winds will turn to the ne, n, or nw. Expecting northerly winds to continue ovr the wtrs Sun thru Mon at 10 to 15 kt ovr the Ches Bay, Currituck Snd, and the Cstl Wtrs, as sfc lo pres sits off the Mid Atlc cst. Hi pres and more tranquil wx expected Tue aftn thru Wed. && .TIDES/COASTAL FLOODING... Intensifying sfc lo pres will move alng the nc cst and then out to sea this morng into Sun morng, leading to an increasing onshore flow thru this morng. Tidal departures will increase, but the progressive, fast moving nature of this system (winds turn offshore this aftn/evening) likely to keep any potential tidal flooding to a minimum. Highest chance for seeing minor flooding would be acrs the Atlc side of the eastern shore with this eveng`s high tide cycle. && .AKQ WATCHES/WARNINGS/ADVISORIES... MD...None. NC...None. VA...None. MARINE...Small Craft Advisory until 6 PM EDT this evening for ANZ633- 635>637. Small Craft Advisory until 6 AM EDT Sunday for ANZ630>632-634- 654-656-658. Small Craft Advisory until midnight EDT tonight for ANZ638. Small Craft Advisory until 6 AM EDT Monday for ANZ650-652. && $$ SYNOPSIS...AJZ/ALB/JDM NEAR TERM...ALB SHORT TERM...AJZ/JDM LONG TERM...ALB AVIATION...TMG MARINE...TMG TIDES/COASTAL FLOODING... is the U.S. government's official web portal to all federal, state and local government web resources and services.