Area Forecast Discussion
Issued by NWS Raleigh/Durham, NC
Issued by NWS Raleigh/Durham, NC
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762 FXUS62 KRAH 240646 AFDRAH Area Forecast Discussion National Weather Service Raleigh NC 146 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. && .SHORT TERM /TUESDAY AND TUESDAY NIGHT/... As of 111 AM Monday... WAA aloft and significant moisture return along with an approaching warm front Tuesday. There is a good chance of rain in the west and depending on the timing of arrival, longevity, and amounts will lead to the potential for a CAD event. Most of the rain will bypass the south and east, allowing for a significant warming there. We went a few degrees below the NBM Tuesday in the Piedmont Damming Region to account for this possibility. If the rain begins early enough in the morning as some models suggest, there will be a huge temperature difference between the wet/moist NW and the dry SE zones. I would lean toward even lower temperatures NW and higher SE on Tue. Messy CAD, low stratus, fog, etc... with the warm front/damming in the Piedmont Damming resume Tuesday night. && .LONG TERM /WEDNESDAY THROUGH MONDAY/... As of 140 AM Tuesday... * Lingering light rain and low-topped showers Wed shift east ahead of a cold front. * Marginal fire weather concerns Thurs and Fri behind the cold front as breezy and very dry relative humidity is expected. Wed begins in the warm pre-frontal regime with perhaps some lingering rain from decaying upstream convection and some localized showers near any MCV`s. The plume of enhanced deep-layer moisture, characterized by PW`s 1 to 1.5", will quickly shift offshore through the morning hours as significantly drier air above 850mb advects into the region. The drier air should significantly hamper widespread showers as the pre-frontal trough and eventually cold front progress across the region. Surface dew points in the 60s may still result in isolated to scattered low-topped showers along the front, but otherwise, expect mostly dry conditions Wed afternoon. Multi-layered cloudiness should limit optimal diurnal mixing, but an average of 20-25 kts through the mixed layer should result in gusts 22-28 mph, strongest south and east of Raleigh. Wed will also be the warmest day of the forecast period with highs ahead of the front reaching into the mid/upper 70s to near 80 with near normal lows overnight with CAA behind the front overnight. A tight pressure gradient remains in place over the Mid-Atlantic between the occluded low over Quebec and Canadian high pressure shifting into the Ohio Valley through Fri night. This should result in a favorable pattern for breezy northwest downsloping winds Thurs and Fri afternoon. Under mostly clear skies, optimal momentum transfer through the mixed layer should allow gusts to reach 20 to 25 kts through the afternoon. Dew points are expected to continue to drop with downsloping compressional warming/drying reaching into the teens and allow minimum relative humidity values to fall to 20-30%. This combination may result in more adverse and potentially dangerous fire behavior given abundant leaf litter, however, may greatly depend on the conditions of fine fuels based on how much rain falls Tues into Wed. && .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 SHORT TERM...Badgett LONG TERM...AS AVIATION...Badgett/LH