Area Forecast Discussion
Issued by NWS Newport/Morehead, NC
Issued by NWS Newport/Morehead, NC
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118 FXUS62 KMHX 281054 AFDMHX Area Forecast Discussion National Weather Service Newport/Morehead City NC 654 AM EDT Sun Apr 28 2024 .SYNOPSIS... High pressure will remain anchored offshore through mid week. A cold front may then impact the area late in the week. && .NEAR TERM /TODAY/... As of 630 AM Sunday... A zone of WAA over the Mid-Atlantic Coast/Chesapeake Bay area has lead to a transient area of low clouds and patchy fog along the Northern Outer Banks early this morning. Based on satellite and local webcams, the fog is already clearing out, and I don`t expect any significant, or long-lasting, fog impacts. Elsewhere, patchy shallow, radiation fog has been noted, but also is not expected to cause significant impacts. PREVIOUS DISCUSSION...Mid/upper level ridging will be anchored over the Carolinas today, while at the surface, high pressure will be anchored offshore. Despite the development of the afternoon seabreeze, showers are not expected today thanks to large scale subsidence beneath the ridge. With warming thicknesses, and less cloudcover than yesterday, highs today are expected to top out a good 5-10 degrees higher, especially away from the coast. && .SHORT TERM /TONIGHT/... As of 230 AM Sunday... A light south to southwest flow plus warming thicknesses will support milder temperatures tonight, with lows around 60 degrees areawide. This is about 5 degrees, or so, warmer than normal for late April. Like this morning, there could be some patchy, shallow fog around, but widespread, impactful fog is not expected. && .LONG TERM /MONDAY THROUGH SATURDAY/... As of 330 AM Sunday... KEY MESSAGES - Low to mid 80s for the rest of the week - Best rain chances Tuesday into Wednesday and then Saturday into Sunday next weekend. FORECAST DETAILS Monday...High pressure will be in control on Monday and weather will be quiet. No precipitation is expected. High temperatures will be in the low to mid 80s with mid to upper 70s along the immediate coast. Above normal temperatures continue on Tuesday with highs reaching the low to mid 80s inland with mid to upper 70s along the coast. Dry weather will prevail through much of the day on Tuesday with a fairly unorganized disturbance beginning to approach from the west with rain chances holding off until overnight Tuesday night into Wednesday. Rain chances have been trending downward with this system so QPF will be fairly minimal. The aforementioned weak disturbance will move across the area on Tuesday night or Wednesday and with it a chance for showers and thunderstorms. This does not look like a severe threat at this point. Thursday looks drier relative to Wednesday but another slight chance (20%) for showers and thunderstorms will be possible, mainly in the western counties. Despite this moving through the area, temperatures will remain high during this time topping out in the upper 80s inland to mid to upper 70s along the coast. A little more moisture advection Saturday and Sunday with both the Bermuda High and an approaching frontal system from the west contributing to the increase in precipitable water. Low chances (25- 30 %) for showers and thunderstorms with a prefrontal trough on Saturday followed by slightly higher chances (30-35%) with the main front on Sunday. Temperatures slightly cooler both days but still well above normal for this time of year. && .AVIATION /12Z SUNDAY THROUGH THURSDAY/... SHORT TERM /through 12z Sunday/... As of 645 AM Sunday... KEY MESSAGES - VFR conditions likely over the next 24 hrs (60-80% chance) FORECAST DETAILS Area webcams, surface observations, and satellite imagery have shown some low CIGs and shallow fog (MIFG) over the past few hours. However, nothing significant or long-lasting is expected this morning. Low-mid level clouds will hang around for several more hours along the Outer Banks, but CIGs are expected to be VFR. Later today, a brief uptick in the wind, as well as a SCT layer of cumulus clouds, is expected along the inland-advancing seabreeze. However, the chance of SHRA is very LOW (<10% chance). Skies are expected to clear out tonight, possibly with another round of MIFG. LONG TERM /Monday through Thursday/... As of 330 AM Sunday...The expected synoptic weather pattern carries a high probability of VFR conditions through next week, with little to no aviation impacts. An approaching disturbance will bring some chances for precipitation Wednesday and Thursday afternoons. && .MARINE... SHORT TERM /through tonight/... As of 630 AM Sunday... A transient area of low clouds and reduced visibility (2-3 miles) has been noted recently across the waters north of Cape Hatteras. Based on satellite and local webcams, conditions are quickly improving from north to south, and the impact to mariners is expected to be minimal. PREVIOUS DISCUSSION...The background northeasterly swell will continue through tonight, with a developing southwesterly wind swell late this afternoon into this evening. This will continue to support seas of 3-5 ft through tonight. Light south winds of 5-10kt this morning will increase to 10-20kt this afternoon, and become southwesterly. Modest southwesterly winds then continue into tonight. There may be just enough of a gradient to support a few gusts of 20-25kt, but the risk appears too low to warrant any marine headlines. LONG TERM /Monday through Thursday/... As of 330 AM Sunday... KEY MESSAGES - Good boating conditions expected early next week FORECAST DETAILS High pressure will shift offshore early next week, with inland troughing developing in the lee of the Appalachians. Winds will steadily increase early next week with southwesterly flow of 10-20kt common. Seas of 3-5 ft will be common through early next week, setting up good boating conditions for several days. && .MHX WATCHES/WARNINGS/ADVISORIES... NC...None. MARINE...None. && $$ SYNOPSIS...MHX NEAR TERM...RM SHORT TERM...RM LONG TERM...RTE/SGK AVIATION...RTE/RM MARINE...RTE/RM