Area Forecast Discussion
Issued by NWS Wakefield, VA

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000 FXUS61 KAKQ 070559 AFDAKQ Area Forecast Discussion National Weather Service Wakefield VA 1259 AM EST Wed Dec 7 2016 .SYNOPSIS... A complex area of low pressure moves off the Mid Atlantic coast tonight with high pressure building in from the west Wednesday. A strong cold front crosses the region Thursday. Canadian high pressure builds into the area for the weekend. && .NEAR TERM /UNTIL 6 AM THIS MORNING/... Lo pres exiting the VA Capes this evening...will continue to move ENE and away from the coast overnight. The lo will be taking the bulk of the significant RA off the coast by 05Z/07...leaving lo level cloudiness and spotty -RA in its wake. NNW winds remaining gusty until after midnight then waning later on. Typically difficult for any significant clearing in wake of lo pres when winds remains from the NNW. Lows range from the m30s NW to m-u40s SE. && .SHORT TERM /6 AM THIS MORNING THROUGH FRIDAY/... Weak high pressure builds across the region Wed. Downsloping flow will aid to dry the column out. Thus, morning clouds should give way to a pt to mstly sunny afternoon. Near seasonable temperatures with highs in the mid 50`s. Anomalous northern stream low builds into southeast Canada Wed night as the associated trough digs into the eastern US. A strong, fast moving cold front will reach the central Appalachians by late Wed night. Clouds increase, but dry conditions expected thru 12Z Thurs. Lows 35 to 40. Models continue to push the strong cold front across the area Thurs as the trough axis lags behind. Moisture will be limited with PW`s at or below three quarters of an inch. While the front is progged to outrun the best height falls, models continue to show a line of showers along the boundary. Will maintain low chance pops, with the focus for shwrs shifting to the eastern half of the fa Thurs aftrn. Highs in the 50s. Dry and colder Thurs night and Fri as Canadian high pressure builds east. Lows Thurs night in the mid-upr 20s except lwr30s along thecoast. Highs Fri in the lwr 40s. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... Long term period starts off Fri night/Sat with dry weather as sfc high pressure builds directly over the Mid Atlc. Main story in the extended will be cold temps, with lows in the low/mid 20s Fri night and Sat night. High temps Fri and Sat avg in the low 40s both days. Next chance of pcpn arrives Sun night/Mon with an approaching cold front, with the best chance of rain being during the day Mon based on the 12Z GFS/ECMWF (40% pops). High temps Mon in the mid/upr 50s. && .AVIATION /06Z WEDNESDAY THROUGH SUNDAY/...
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Widespread IFR conditions observed across the forecast area as low pressure centers just offshore. Ceilings are generally between 500 and 700 feet AGL. Surface winds northwest 5-10 knots inland and 10-15 knots with a few gusts of 25 knots near the coast. Lingering light rain persists along the Maryland coast, but dry elsewhere. Expect IFR conditions to persist through the overnight period, with some improvement possible over the Piedmont. However, any breaks in the clouds over the Piedmont into central Virginia will aid in fog development. Have brought some MVFR fog into KRIC late tonight, but main impact will remain the low ceilings. Ceilings will slowly lift/erode mid to late morning, but expect low to mid clouds to persist along the coast into the afternoon thanks to a moist northerly flow. VFR conditions return inland this afternoon. Northwest winds generally around 10 knots with a few gusts around 20 knots near the coast. OUTLOOK...A strong cold front impacts the area on Thursday, with only a quick chance for showers Thursday afternoon. High pressure returns Friday through Sunday.
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&& .MARINE... Latest sfc analysis shows low pressure developing near the NC coast with another area of low pressure over the OH Valley. The former low will strengthen this eveng/tonight as it pushes off the coast. Expect strong SCA conditions over at least the Bay and ocean with this system, with occasional gusts to gale force possible. Will maintain the SCA for now. Seas may reach 7-9 ft out 20 nm. Winds/waves/seas then drop during the day Wed as weak high pressure builds into the area. Sca conditions may linger until Wed eveng over the ocean with 5 ft seas continuing. A strong cold front then pushes across the waters Thu, with at least strong SCA conditions expected Thu night through Fri night. Sub-SCA conditions return over the weekend. && .AKQ WATCHES/WARNINGS/ADVISORIES...
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MD...None. NC...None. VA...None. MARINE...Small Craft Advisory until 4 AM EST early this morning for ANZ635>638. Small Craft Advisory until 10 AM EST this morning for ANZ630>634. Small Craft Advisory until 10 PM EST this evening for ANZ650- 652-654-656-658.
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&& $$ SYNOPSIS...ALB/MPR NEAR TERM...ALB SHORT TERM...MPR LONG TERM...MAS AVIATION...SAM/LSA MARINE...MAS is the U.S. government's official web portal to all federal, state and local government web resources and services.