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Area Forecast Discussion
Issued by NWS Wilmington, NC
Issued by NWS Wilmington, NC
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560 FXUS62 KILM 281723 AFDILM Area Forecast Discussion National Weather Service Wilmington NC 1223 PM EST Fri Feb 28 2025 .SYNOPSIS... High pressure along the Gulf Coast will provide sunny and dry weather today. A quick rebound in temperatures is expected on Saturday ahead of a dry cold front moving through Saturday night. High pressure will bring colder weather early next week, followed by another warm up and chance of showers or thunderstorms on Wednesday. && .UPDATE... A subtle surface ridge axis extending from north of Gulf Coast high pressure will sweep east across the Carolinas today. Light northwesterly winds this morning should back to the southwest this afternoon as the ridge shoots offshore. The atmospheric column remains bone dry and aside from a shred or two of cirrus no clouds are anticipated today. A fairly impressive seabreeze circulation should develop early this afternoon as inland temperatures poke toward 70 but air temps over the water remain in the 50s to lower 60s. South winds should appear at the beaches around 1 PM and the cooler marine airmass should sweep 10-20 miles inland by 5 PM. In addition to temperature differences, there may be a substantial dewpoint and relative humidity difference on either side of the seabreeze front with inland dewpoints remaining in the 20s throughout the day. Any controlled burns ongoing near the coast this afternoon should plan for a wind shift as this seabreeze front moves overhead. No substantial changes were needed with any forecast elements during this morning update. && .NEAR TERM /THROUGH TONIGHT/... Shortwave that drove the cold front across the area late Thu evening has pushed offshore, setting up a brief period of deep northwest flow. The mid-level pattern quickly reverts back to zonal flow, later this morning, ending any brief cold advection and ensuring a steady stream of dry air. May see a few gusts to 20 mph around peak heating across North Carolina, but winds aloft are much weaker than on Thu. There remains a large amount of dry air just above the top of the mixed layer. So expect another day with afternoon humidity well under 30%. Expect to see some areas dipping into the teens. Afternoon temperatures will be cooler than Thu, but highs will still come in above normal. Despite clear skies and a very dry air mass lows tonight will end up above to well above climo, mainly due to enhanced southerly flow. Deep westerly flow along the Gulf coast keeps the moisture feed shut off, so no real increase in moisture tonight despite the low level south to southwest flow. && .SHORT TERM /SATURDAY THROUGH SUNDAY/... A warm southwest flow will be in place Saturday ahead of a strong but dry cold front that will move across the area Saturday night into Sunday morning. Conditions...that being RH`s and winds look similar to today so there may be some increasing fire weather concerns. Outside of this temperatures remain basically the same as the previous forecast most notably Sunday`s highs only reaching the lower 50s and that may be a struggle points northwest. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... Trends remain in place for the extended period with those being cool and dry early on...Monday and Tuesday with a strong cold front/system moving across midweek more definitively later Wednesday into early Thursday followed by a decent cool down very typical of early March weather. Probably a little early to interrogate severe weather possibility in detail but SPC likes it and will follow closely...that is for Wednesday. && .AVIATION /18Z FRIDAY THROUGH WEDNESDAY/... High confidence VFR conditions will continue over the coming 24 hours. Dry air should preclude ground fog issues tonight. Southwest winds should increase to near 15G25KT after 15z Saturday. Extended Outlook...High confidence for VFR conditions through Tuesday. Increasing moisture ahead of a cold front may yield scattered convective showers or thunderstorms with associated flight category restrictions on Wednesday. && .MARINE... Through Tonight...Conditions will gradually improve during the next few hours now that the cold front has pushed east of the waters. Seas taking a little longer to drop below Small Craft Advisory thresholds so went ahead and extended the SC waters portion of the headline through 4AM EST, matching up with the NC headline. Offshore flow will gradually decrease this morning with flow becoming southwest around midday and the gradually increase later today into tonight as the surface gradient once again becomes more defined. Not expecting winds much above 15 kt through tonight. Seas will follow a trend similar to winds, falling for much of the day before starting to build later this evening and overnight. Today`s northwest wind wave will disappear this evening, in favor of a southerly wind wave. A southeast swell will persist through tonight. Saturday through Tuesday...Southwest winds of 15-20 knots will be in place Saturday ahead of a strong cold front. There could be a marginal small craft advisory that develops but the latest guidance/forecast remains somewhat stable. The remainder of the period will feature the common pattern of a northerly flow (Sunday) eventually shifting to a return flow by the middle part of next week. No headlines should be needed beyond Saturday although sea fog could be discussed for the end of the period but way too early for that. && .ILM WATCHES/WARNINGS/ADVISORIES... NC...None. SC...None. MARINE...None. && $$ SYNOPSIS...ILM UPDATE...TRA NEAR TERM...TRA SHORT TERM...SHK LONG TERM...SHK AVIATION...TRA MARINE...TRA/SHK