Area Forecast Discussion
Issued by NWS Wilmington, NC

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888 FXUS62 KILM 200523 AFDILM Area Forecast Discussion National Weather Service Wilmington NC 1223 AM EST Sat Jan 20 2018 .SYNOPSIS... Above normal temperatures are expected through the weekend and for much of next week. High pressure will migrate across the Southeast states through the weekend shifting off the coast by early next week. Scattered showers are expected ahead of a cold front early next week. The cold front will move across the area and offshore Tuesday. High pressure will follow for the remainder of next week. && .NEAR TERM /THROUGH TODAY/... As of 800 PM Friday...Temps cooling faster than expected this eve in several locations, but will level off late eve and overnight as very light SW flow persists. Expect lows in the upper 20s and lower 30s with the coldest inland locations dipping to the mid 20s. This could be the last night temps drop below freezing for at least several days. At the surface high pressure, well to our west, will drift east slightly. Above the surface layer, weak high pressure will be centered over Florida and the Bahamas. This setup will result in neutral to very weakly warm advection. Highs on Sat will be around 60 and that represents a 4-5 degree deviation above climatology. && .SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/... As of 315 PM Friday...Weak surface high over the western Atlantic will remain the main surface feature through the period. Weak southern stream shortwave will move east over the northern Gulf of Mexico Sat night and Sun, moving off the FL coast Sun night. This feature may end up increasing mid and upper level moisture over the forecast area early in the weekend. Cirrus may linger over the area Sat night before skies clear out for Sun. Weak shortwave ridge builds over the Southeast late in the period as the shortwave exits to the east. Digging 5h trough over the western plains Sun will lead to an increase in southwest flow aloft which may advect some thicker cirrus over the region as the period ends. Temperatures will be around 5 degrees above climo overnight with high running closer to 10 degrees above. && .LONG TERM /MONDAY THROUGH FRIDAY/... As of 315 PM Friday...A relatively quiet work week anticipated. Models are in decent agreement in taking an upper closed low located over the central U.S. on Monday, and lifting it NE to the Eastern Great Lakes. The sfc low will follow the same general path, however it`s associated cold front will push across the FA during Tue. The FA will see highs in the 60s both Mon and Tue along with breezy conditions especially on Tue. Models indicate High pressure will then follow Wed thru Fri with temperatures at or slightly above climo norms. Flow aloft during the Wed thru Fri time line will prevent the cold air over Canada from dropping this far south. && .AVIATION /06Z SATURDAY THROUGH WEDNESDAY/...
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As of 06Z...VFR conditions expected through the duration of the valid TAF period. Weak high pressure will build into the area and with moisture limited in the column, even clouds will be limited if present at all. Extended Outlook...VFR. Possible MVFR/SHRA late Mon/early Tue.
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&& .MARINE... NEAR TERM /THROUGH SATURDAY/... As of 800 PM Friday...West to southwest winds through the period with high pressure remaining to our west and only moving slightly eastward. The broad swath of light offshore winds will keep seas in the 2-3 ft range. SHORT TERM /SATURDAY NIGHT THROUGH SUNDAY NIGHT/... As of 315 PM Friday...Weak high pressure centered just southeast of the waters during the period will maintain weak gradient and light winds over the waters. Flow will be from the south with speeds under 10 kt through the period. Seas around 2 ft Sat night will run 2 ft or less Sun and Sun night. LONG TERM /MONDAY THROUGH WEDNESDAY/... As of 315 PM Friday...The highlight for this period will be a CFP slated for Tue morning. Weak onshore flow Mon will increase and become SW Mon night into Tue ahead of the cold front. After FROPA Tue, winds will veer to the W and NW and then slowly abate by Tue night and continuing into Wed as the center of high pressure approaches from the Gulf Coast States. SCEC conditions likely late Monday into Tue with SCA at this point a possibility. Significant seas 1 to 3 ft Mon will build to 3 to 5 ft with a few 6 footers possible late Mon night into Tue. As winds become offshore, W to NW, on Tue, seas will actually subside due to a shortened fetch. Wind driven waves at 4 to 5 second periods will dominate Mon into Tue. By Wed, seas will run 1 to 3 ft thruout with a small ESE ground swell dominating. && .ILM WATCHES/WARNINGS/ADVISORIES... SC...None. NC...None. MARINE...None. && $$ SYNOPSIS... NEAR TERM...RJD/MBB SHORT TERM...TRA LONG TERM...DCH AVIATION...SHK MARINE... is the U.S. government's official web portal to all federal, state and local government web resources and services.