Area Forecast Discussion
Issued by NWS Raleigh/Durham, NC
Issued by NWS Raleigh/Durham, NC
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911 FXUS62 KRAH 071652 AFDRAH Area Forecast Discussion National Weather Service Raleigh NC 1152 AM EST Sun Dec 7 2025 .SYNOPSIS... A front will hold to our southeast through the rest of the weekend, as weak high pressure settles over North Carolina and the Mid Atlantic region. An Arctic cold front will move southeastward through the area on Monday, while an upper level disturbance passes overhead. Chilly high pressure will build in from the north Monday night and Tuesday, then move to our southeast, allowing a southwest flow and milder temperatures to return for Wednesday and Thursday. && .NEAR TERM /TODAY AND TONIGHT/... As of 200 AM Sunday... * Fog/stratus through the noon hour, then trending gradually to partly cloudy in the afternoon, but uncertainty is high. * Not as chilly as yesterday, but still below normal. * Clouds increase overnight, with a little light precip spreading into the Piedmont from the W late. We`ll stay in a fast and flat WSW steering flow today, while at the surface, weak high pressure analyzed over NC and the Mid Atlantic holds in place before drifting offshore late. The most noteworthy issue today is determining when the morning fog and stratus will most likely burn off. The mid and upper levels will briefly dry out Sun behind the departing weak mid level perturbation and upper jet streak pushing ENE off the Mid Atlantic coast, which should allow some insolation that might help burn off the fog/stratus from the top. But with weak surface flow to inhibit horizontal mixing, and with steady slow warming taking place just aloft (~925-900 mb) helping to reinforce the surface-based stability, we could see low clouds hanging on in most areas well into the afternoon. Even if some of the area sees at least a few hours of partial sunshine prior to sunset, it may not be enough to warm up temps much. As such, forecast high temps today will be a few degrees below yesterday`s expectations, mainly in the upper 40s to around 50, warmer than Sat but still below seasonal normals. Our attention then turns to a shortwave trough over WY/CO early this morning that will shift through the Mid Miss Valley and across TN toward W NC through tonight, propelled by energy diving into the trough from the Upper Midwest. This trough will be associated with an Arctic cold front that will move into the Mid South, Ohio Valley, and central Appalachians overnight. High and mid level clouds are expected to spread in from the west starting in the evening, and we`ll see a trend toward weak mid level DPVA in our west late, but there`s little opportunity for substantial moisture return into our area through the lowest several thousand ft AGL. PW does inch up across W NC late, but values are still near or just slightly above normal, thus any mechanisms to force ascent will need to work on what little moisture is attending the system. Will have mostly low chance pops spreading into the W CWA late, and given the stubborn pocket of drier low level air, any amounts initially should be very light. Based on high res guidance, there is a high chance for ice in the clouds, and if any of these hydrometeors can survive the layer of drier air just off the surface (in a seeder-feeder process), we may see a little light snow mixed in with light rain at the ground toward morning. But overall, the expected surface wet bulb temps are likely to be just above freezing through the night, favoring just liquid for ptype through tonight. Lows across the CWA will be around 31-36. -GIH && .SHORT TERM /MONDAY AND MONDAY NIGHT/... As of 240 AM Sunday... * Chance of precipitation areawide Mon, likely mixing with then changing to a period of all snow before ending, especially across the N and W. * Precip amounts should generally be under a quarter inch liquid equivalent, suggesting that any snow accumulation would be mostly under an inch given the initial rain/snow mix, but stay tuned. Forcing for ascent focused in the mid and upper levels should continue to ramp up early Mon as the aforementioned trough approaches, but the incoming PW values will likely be just near normal and falling further late in the day as the mid-upper levels start to dry out. But forecast soundings show at least a few hours in which the column is saturated or nearly so throughout the mixed phase region aloft down to the surface, occurring in conjunction with peak mid level DPVA from late morning through late afternoon W to E. The incoming Arctic front is expected to push SSE through central NC in the afternoon, so the coldest air may be chasing the better moisture to some degree during the morning hours, particularly if the higher terrain manages to delay the coldest and most dense air for a few hours. But we`re still likely to see an atypical temp trend with surface temps falling in the afternoon, and confidence is increasing that we`ll see at least a couple of hours of predominant light wet snow over all but the far S and SE CWA Mon afternoon as the low levels cool, with accumulations potentially limited by the initial rain/snow mix, the surface temps sitting near or slightly above freezing for much of the day, and the modest PW values. Model agreement is good in showing a thermal pattern supporting patchy light rain chances at onset, followed by good chance to likely pops for a light rain/snow mix, then changing to mostly light snow before ending in the late afternoon or very early evening, with no reasonable chance of any icing or freezing precip. Total accumulation should range from a trace along and N of a line from the Triad to near Goldsboro, ranging to one half to just under one inch near the VA border. Expect highs in the upper 30s to mid 40s early, with readings falling through the 30s in the afternoon. Cold lows Mon night in the mid teens to low 20s will lead to minimum wind chills in the teens in most places overnight into Tue morning. While any lingering precip on the ground will begin to dry out overnight, we`ll be lacking a strong wind to aid in the drying process, and there is a good chance in a flash freeze with areas of black ice developing, which would cause travel concerns late Mon night into early Tue. -GIH && .LONG TERM /TUESDAY THROUGH SATURDAY/... As of 315 AM Sunday... * Continued chilly Tue/Tue night, then moderating Wed/Thu before dropping back well below normal by Sat. * Precip chances are looking a bit higher for Thu night through Fri night. The rest of the week appears mostly tranquil, continued chilly Tue but with temperatures trending back closer to normal as the air mass moderates and the surface high slides to our SE. Models indicate another round of Arctic air pouring into the Upper Midwest Wed and through the Great Lakes region and into New England Thu, leading to a renewed digging of longwave troughing over the central and eastern CONUS. WAA and moisture advection ahead of the incoming associated surface cold front favor rain chances moving into the NW CWA late Thu then spreading areawide Thu night through Fri before exiting to the E Fri night. We may again see a period of changeover to snow before ending Fri night, esp across the northern CWA, as the cold front drops SSE through the area. After chilly highs in the low to mid 40s Tue, temps should return closer to normal for Wed/Thu, then trending cooler Fri (with specifics dependent on the frontal timing) and quite chilly Sat with highs expected to be only in the upper 30s to mid 40s. -GIH && .AVIATION /18Z SUNDAY THROUGH FRIDAY/... As of 1152 AM Sunday... Early morning fog has largely dissipated this morning, with some IFR/LIFR ceilings persisting at RDU/RWI/FAY. They will gradually lift to VFR this afternoon, before another round of IFR cigs and MVFR vsbys return tonight. Big story will be precip potential on Monday with a rain/snow mix forecast at INT/GSO around daybreak, eventually changing to all snow by late morning. Rain/snow mix possible at RDU as well, with a changeover to snow likely holding off until just after the end of the TAF period. FAY is likely to remain all rain through 18Z Monday, although a brief changeover later in the day is possible. IFR or lower ceilings and vsbys expected where snow occurs. Outlook: Conditions will rapidly improve from west to east during the day Monday, with dry weather returning area-wide by Monday night. VFR weather forecast through mid/late week thereafter. && .RAH WATCHES/WARNINGS/ADVISORIES... None. && $$ SYNOPSIS...Hartfield NEAR TERM...Hartfield SHORT TERM...Hartfield LONG TERM...Hartfield AVIATION...Leins