Area Forecast Discussion
Issued by NWS Newport/Morehead, NC
Issued by NWS Newport/Morehead, NC
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935 FXUS62 KMHX 280731 AFDMHX Area Forecast Discussion National Weather Service Newport/Morehead City NC 331 AM EDT Fri Jun 28 2024 .SYNOPSIS... High pressure then builds in from the north Friday into Saturday with another front approaching late Sunday through Monday. High pressure once again builds over the area from the north on Tuesday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... As of 330 AM Fri...Key message today: A little cooler and slightly less humid across the northern coastal plain. Coverage of showers and thunderstorms will be less than on Thursday. The "front" which crossed the area last night was not much of a front in a literal sense as there will be very little change in temperature and dewpoint across most of the area. It will be a little drier in that coverage of diurnal showers and thunderstorms will less than on Thursday. Easterly low level flow will be prominent today in the wake of the aforementioned front. The high res models indicate that dewpoints could mix down into the low to mid 60s over the northern coastal plain this afternoon while remaining in the mid 70s across the remainder of the area and depicted this in the wx grids. Highs will range from the mid 80s beaches to the upper 80s to lower 90s inland. The consensus of the guidance is indicating scattered showers and thunderstorms, especially this afternoon and mostly along/south of Highway 70. Continued with the higher NBM PoPs which are around 40% as opposed to the model MOS which is only around 20%. Most of the CAMs supported the higher PoPs of the NBM. The lack of shear should preclude severe storms but with MLCAPES of 1500-2000 J/kg and PW values around 2" torrential downpours will occur with local rainfall in excess of 1" possible. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 AM SATURDAY/... As of 330 AM Fri...Tonight will be interesting as the models are forecasting an increase in dewpoints and PW area wide as the low level flow veers to the SE. This could result in widely scattered showers and storms forming over the gulfstream then moving northward into coastal eastern NC especially east of Highway 17. Thus will have slight chance PoPs to account for this as not expecting coverage to be that high. Muggy lows in the low to mid 70s are expected. && .LONG TERM /SATURDAY THROUGH THURSDAY/... As of 330 AM Thurs...Once again the heat and humidity will be the main story in the long term to start as high pressure ridging builds overhead this weekend. Heat related impacts will be a threat most afternoons through Sunday, with the most oppressive heat potential both Saturday and Sunday. Scattered diurnal activity is expected through Sunday, with better chances for precip arriving Sunday night and into Monday as another front moves in. Expecting dry conditions from Tuesday into the end of the period. Saturday through Monday... The heat and humidity return in full force this weekend as high pressure ridging restrengthens over the area. High temps will generally range from the upper 80s along the immediate coast and OBX to the mid to upper 90s across the Coastal Plain. Combined with the high humidity across ENC heat indices will reach 100 to potentially 110 this weekend. With lows only getting down into the 70s each night, there will not be much relief overnight either resulting in an increased threat for excessive heat. Otherwise diurnally driven showers and storms will be possible on Sat with increased precip chances on Sunday afternoon through Monday with the approach of a cold front. This cold front will track across the region on Monday with the precip threat gradually ending from northwest to southeast Mon night. Given the forecasted cloudcover and precip chances on Mon temps will also be lower with Highs only getting into the 80s. Tuesday through midweek...Behind this front next week the heat and humidity looks to break finally with dry conditions and near normal temps expected. && .AVIATION /07Z FRIDAY THROUGH TUESDAY/... SHORT TERM /through Tonight/... As of 330 AM Fri...As has been the case most of this past week, forecasting the potential for nocturnal sub VFR conditions in fog and stratus remains difficult early this morning and again overnight. Consensus of guidance is for a mixture of fog and low clouds producing a period of MVFR to Friday. Latest obs show variable winds N-SW 5-10 kt with seas 2-3 ft. Winds are expected to be around 10 kt or less becoming NE late tonight, becoming easterly around 10-20 kt on Friday. Seas will be around 2-4 ft. IFR conditions 8-12Z this morning. This could repeat overnight as low level moisture increases as the flow veers to the SE. Outside of this, expecting VFR conditions with light winds. Widely scattered afternoon storms could produce brief sub VFR conditions especially at EWN and OAJ. LONG TERM /Saturday through Tuesday/... As of 345 AM Thurs... Diurnally driven shower and thunderstorm activity is forecast across ENC on Fri and Sat with some periods of sub-VFR conditions possible each afternoon and evening. Another cold front will arrive late Sun and bring an increased chance of sub- VFR conditions through Monday before VFR conditions potentially return on Tuesday. && .MARINE... SHORT TERM /through Tonight/... As of 330 AM Fri...High pressure builds in from the north today into tonight. Light variable winds early this morning will become NE and increase to 10-20 kt late this morning and afternoon, becoming E late in the day. Tonight E winds 10-15 kt become SE. Seas will 2-4 ft through tonight. LONG TERM /Saturday through Tuesday/... As of 345 AM Thurs... Decent boating conditions forecast through Sat before a cold front tracks across our waters Sun night into Monday bringing widespread shower and thunderstorm activity as well as elevated winds and seas. As a ridge of high pressure gradually builds in from the north on Fri, northeast to easterly winds at 5-15 kts and 2 to 4 ft seas will persist across our waters into Fri night. As high pressure ridging gradually slides offshore winds will turn to a SE`rly direction on Sat. Winds will continue to gradually turn Sat night into Sun to a SW`rly direction while also increasing to 10-20 kts as a cold front approaches from the west bringing our next threat for unsettled conditions across the waters Sun night into Mon. Seas will remain around 2 to 4 ft through the rest of the period, though would not be shocked to see some 5 ft seas near the Gulf Stream waters Sun night into Mon as the front track across the area. && .MHX WATCHES/WARNINGS/ADVISORIES... NC...None. MARINE...None. && $$ SYNOPSIS...MHX NEAR TERM...JME SHORT TERM...JME LONG TERM...RCF/RJ AVIATION...JME/RCF MARINE...JME/SK/TL/RCF