Area Forecast Discussion
Issued by NWS Wilmington, NC

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000 FXUS62 KILM 250219 AFDILM Area Forecast Discussion National Weather Service Wilmington NC 1019 PM EDT TUE MAY 24 2016 .SYNOPSIS... Warm temperatures will continue as high pressure spreads across a good portion of the Atlantic. Low pressure will develop east of the Bahamas late in the week. It is too soon to tell where this feature will end up bringing wet weather...but it may be locally. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
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As of 1000 PM Tuesday...High pressure offshore will ridge across the waters overnight. This should keep skies clear along with light to calm winds. Ideal radiational cooling will occur. Dewpoints are expected to recover slightly and this will put a floor on overnight lows. Expect lows in the lower to mid 60s with the coolest inland spots dropping to the upper 50s. A few mid 50s are possible in the most rural inland locations.
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&& .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH THURSDAY NIGHT/... As of 330 PM Tuesday...Mid to upper ridge will build up the southeast coast with increasing heights and plenty of warm May sunshine to create temps up above normal. Expect temps to reach well into the 80s to around 90 in spots. Plenty of dry air and subsidence will keep showers/tstms out of the forecast for the most part, but will not rule out a few aftn cu. Models continue to show a minor shortwave reaching into the Carolinas on Thurs. This may support a few thunderstorms...mainly west of the area. Included a slight chc around I-95 corridor. The center of high will basically remain off the coast shifting east through the week and therefore expect a southerly return flow around the high helping to bring slightly higher dewpoint air into the region. this will help to moderate overnight lows a bit, keeping temps in the 60s. Resumption of SW return flow will limit overnight cooling with low and middle 60s at daybreaks. && .LONG TERM /FRIDAY THROUGH TUESDAY/... As of 300 PM Tuesday...Model agreement regarding the area of disturbed weather just east of the Bahamas is getting hard to ignore. The agreement is related to the fact that they all develop low pressure out of this mass of convection that is likely at least partly warm core. Where the agreement trails off is with respect to the path and timing of said low. This will have large local forecast ramifications as models like the GFS that decidedly bring it into the SC coast would imply a fairly wet weekend maybe lasting into early next week as the system meanders. Other solutions that keep the meandering motion offshore through the period could keep us in the subsiding and drier area west of the low/trough. Should we remain outside of the effects of the system then with a building upper ridge off the coast we may not have very strong forcing for precipitation. But since even since the latest 12Z ECMWF brings associated moisture ashore by Saturday will keep the forecast as-is showing a rise in POPs Saturday as well as tempered afternoon highs. When and where this features comes ashore may be in for a long wet period as it will be quite slow to move stuck under the aforementioned ridge aloft. && .AVIATION /00Z WEDNESDAY THROUGH SUNDAY/... As of 00Z...Winds will decrease in the next few hours and will be very light SW or calm overnight. Under clear skies there is a slight potential for patchy fog development reducing vsbys to MVFR towards sunrise. Confidence is low however as there is a potential for increasing high level clouds overnight. Light sw-w winds after sunrise will become SW by afternoon, except S-SSW at the coastal terminals mid-late morning. No precipitation is expected as the airmass is quite dry. Extended Outlook...Predominantly VFR conditions expected...until the weekend when MVFR cigs are possible in scattered to numerous showers. && .MARINE...
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NEAR TERM /THROUGH TONIGHT/... As of 1000 PM Tuesday...High pressure offshore will ridge across the waters overnight. Southwest winds up to 10 to 15 kt late this eve will diminish to near 10 kt or less overnight. Seas of 2 to 3 ft will be mainly 2 ft overnight. SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/... As of 330 PM Tuesday...Southerly return flow will continue around high pressure center to the east of the local waters. gradient remains weak with winds generally less than 15 kt but expect a spike in winds and a bit of chop each afternoon as sea breeze kicks in producing some gustier winds for a few hours. Seas will remain below 3 ft. LONG TERM /FRIDAY THROUGH SUNDAY/... As of 300 PM Tuesday...Some vexing uncertainty regarding a possible area of low pressure that is forecast to develop from the area of current disturbed weather east of the Bahamas. Winds will stay onshore through the long term. The possible effects, if any from the low will be possibly to veer them and/or increase wind and seas. Have not changed the current forecast which shows a little of all (veering, increased wind speeds, building seas).
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&& .ILM WATCHES/WARNINGS/ADVISORIES... SC...None. NC...None. MARINE...None. && $$ NEAR TERM...RJD SHORT TERM...RGZ LONG TERM...MBB AVIATION...MRR

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