Area Forecast Discussion
Issued by NWS Raleigh/Durham, NC
Issued by NWS Raleigh/Durham, NC
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609 FXUS62 KRAH 240543 AFDRAH Area Forecast Discussion National Weather Service Raleigh NC 1242 AM EST Mon Nov 24 2025 .SYNOPSIS... High pressure will build across and offshore the Middle Atlantic through tonight. A wedge front will develop and become quasi- stationary over the Foothills and Piedmont of the Carolinas and Georgia Tuesday through Wednesday. A strong cold front will move across the region early Wednesday night. Cold high pressure will follow and build from northwestern Canada to the Middle Atlantic through next weekend. && .NEAR TERM /TODAY THROUGH TONIGHT/... As of 1240 AM Monday... Clear skies and drier air will dominate into today as high pressure will be over the region. The high pressure will move offshore this afternoon and tonight. A WAA pattern will return that will be especially notable Tuesday. Expect sunny skies today with highs in the lower to mid 60s with light wind. Expect mainly clear skies tonight with some periodic high cloudiness. Lows in the upper 30s NE ranging into the mid 40s south. && .LONG TERM /TUESDAY THROUGH SUNDAY/... As of 250 PM Sunday... * Unsettled weather Tue through Wed night. * Dry and colder Thu through Sat, then moderating Sun. Tue-Wed night: Still anticipating an active period, with models in fairly good agreement on timing and amplitude of a sharpening mid level trough tracking from the Dakotas/Upper Midwest across the U.P. of MI to the Ontario/Quebec border. The surface high just off the Mid Atlantic coast Tue morning will push further out over the NW Atlantic during the day, putting NC in a deepening return flow pattern, with falling heights aloft as the mid level ridge over the Southeast flattens and pushes offshore. The LREF ensemble cluster analysis shows small variations which can be largely explained by differences in trough amplitude, with decreased timing differences from yesterday`s runs. PW increases Tue particularly over our NW half, where moist isentropic upglide at 290K-305K also strengthens, supporting chance to low-end likely pops spreading into N and W sections where PW will trend to over 200% of normal. MUCAPE Tue should be no greater than 200 J/kg, but with high deep-layer bulk shear and periods of enhanced upper divergence passing overhead from the upper jet streak to our NW, we could see an isolated afternoon storm or two across the N and W. Regarding temps Tue, the departing surface high is of mild continental origin with a lack of strong cold/dry air advection from the N that might prompt strong CAD formation. But with rain chances arriving in our NW early in the day when surface dewpoints may still be in the 40s, development of at least a surface-based stable pool is favored in the NW Piedmont. Temps in the Triad may struggle to reach the upper 50s/near 60, while in our southeast within good WAA and thinner clouds, highs in the 70-75 range are expected. Lows Tue night are expected to be quite mild, in the mid 50s to around 60. The most likely time of cold front passage through central NC is mid to late Wed afternoon, slightly faster than that indicated in yesterday`s models. Prefrontal PW will remain well above normal Tue night through much of Wed, so will retain above-climo pops. We have another chance for a few thunderstorms Wed ahead of the front, with the greatest potential for MUCAPE of 200-600 J/kg over our SE half. We`ll still have strong deep layer bulk shear of 50-60 kts with long and generally straight hodographs, so a few strong storms with sub- severe gusts and small hail could occur, best chance S and E of the Triangle. Expect highs Wed in the upper 60s to mid 70s, with lows behind the front Wed night in the mid 30s to low 40s. Thu-Sun: Within post-front subsidence, expect lots of sunshine Thanksgiving Day, with fair, dry, and cool conditions through Sat as the mid level trough shifts over E NOAM. Despite the abundant sunshine, since the incoming surface high will be of Canadian/Arctic origin, the CAA will keep temps below normal, esp Fri through Sat as the surface high settles overhead and just to our N. We should see highs in the upper 40s to mid 50s Thanksgiving Day and Sat, and mid 40s to lower 50s Fri, with are about 5 to 15 degrees below normal. Lows should be coldest Fri night, in the 20s. As the mid level trough lifts quickly NE over the Canadian Maritimes into the far N Atlantic over the weekend, our mid level flow will back and strengthen from the SW, while at the surface, the high will track over the Mid Atlantic region Sat then off the New England coast Sun. This will result in a gradual air mass modification with increasing high clouds from the SW Sun. Expect continued dry weather, though, with highs in the mid 50s to mid 60s. && .AVIATION /06Z MONDAY THROUGH THURSDAY/... As of 1240 AM Monday... VFR conditions will prevail for the 24 hour TAF period. Late this afternoon, some mid to upper level VFR clouds should start to spread over the region from the west. Outlook: IFR-MVFR ceilings and patchy light rain will likely overspread the Piedmont ahead of a retreating warm front Tuesday morning. A chance of showers and also flight restrictions are expected later Tuesday through Wednesday, as a strong frontal system traverses the region. && .RAH WATCHES/WARNINGS/ADVISORIES... None. && $$ SYNOPSIS...MWS NEAR TERM...Badgett LONG TERM...Hartfield AVIATION...Badgett/LH