Area Forecast Discussion
Issued by NWS Raleigh/Durham, NC
Issued by NWS Raleigh/Durham, NC
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300 FXUS62 KRAH 110650 AFDRAH Area Forecast Discussion National Weather Service Raleigh NC 150 AM EST Thu Dec 11 2025 .SYNOPSIS... High pressure will briefly build into the SE through tonight. An area of weak sfc low pressure and an attendant warm front will move into the area on Friday and will stall or dissipate ahead of an Arctic cold front that will move through the area late Saturday. && .NEAR TERM /TODAY/... As of 200 AM Thursday... * Chilly an Dry A long wave trough and broad cyclonic NW flow aloft will remain established over the Eastern US. At the surface, high pressure extending from the lower MS Valley will build into SE US, reinforcing a dry and stable airmass across central NC. Residual low-level CAA this morning will keep temperatures well below normal. Despite mostly sunny skies, highs will only reach the the lower/mid 40s north to upper 40s south, approximately 8 to 12 degrees below normal. Winds will be notably lighter than Wednesday, with sustained NWLY winds of 5 to 10mph, accompanied by modest gustiness into the teens, strongest during the morning and into the early afternoon. && .SHORT TERM /TONIGHT THROUGH THURSDAY NIGHT/... As of 200 AM Thursday... The surface high will shift overhead this evening and tonight, allowing winds to decouple. Skies will begin mostly clear, supporting efficient radiational cooling and a quick temperature drop after sunset. However, strengthening broad WAA ahead of the weak sfc low and it`s attendant warm front approaching the southern Appalachians will lead to increasing and thickening mid- and high-level cloud cover. This will impede further cooling, yielding stabilizing or slightly rising temperatures during the second half of the night. While the deepest saturation is forecast to remain over Virginia, model soundings indicate the potential for fleeting, deeper moisture and lift, with ceilings briefly lowering to ~5kft across northern portions of the forecast area. Although virga remains the most likely outcome, a few hours of light snow or flurries are possible between 06z to 15z Friday, mainly along and north of HWY 64. Little to no accumulation or impact is expected. Precipitation should end by noon Friday with dry weather thereafter. Skies will range from mostly cloudy across the north to mostly clear/sunny across the south, resulting in a large temperature gradient, with highs from near 40 north to lower/mid 50s south. Lows Friday night will fall into the mid/upper 20s north to lower 30s south. && .LONG TERM /SATURDAY THROUGH WEDNESDAY/... As of 218 PM Wednesday... * Arctic air brings much below normal temperatures Sun night and Mon, with near Cold Weather Advisory Criteria during this period * Precipitation chances focused on Sun and later Wed/Thu Quiet weather will be in place Sat ahead of an Arctic cold front that moves through Sun. Sat will likely be the warmest day of the extended, outside of the upcoming Wed next week, with highs generally in the low to mid 50s. There will be some passing high clouds across the north, but overall a sunny day. We continue to advertise a strong and anomalous Arctic cold front that is forecast to track through the region Sunday. Most guidance shows the front moving through sometime during the late morning or afternoon. However, the true Arctic air may be slower to cross over the higher terrain to our NW, potentially not arriving until Sunday evening. Either way, it looks gusty Sunday with the tight pressure gradient, with NW winds of 25-30 mph. Highs will be in the upper 30s to upper 40s NW to SE. Along/ahead of the front, guidance continues to depict a chance of rain/snow mainly US-1 and to the east. This looks mainly like a cold air chasing the precipitation scenario, meaning that snow chances are somewhat limited. However, if the trough can dig further south into NC as one ensemble cluster suggests, would not be surprised if a few light snow/flurries could occur early Sunday evening. Otherwise, precipitation chances are limited. The main story is the bitter cold temperatures Sun night with low to mid teens and wind chills in the single digits with NW wind gusts of 15-25 mph into early Mon. A Cold Weather Advisory may indeed be needed for this period. A near 1040 mb Arctic high settles over the area Mon, with highs well below normal in the mid/upper 30s and lows in the teens to low 20s. A warming trend returns Tue/Wed under quasi-zonal flow with highs back into the 40s and eventual 50s. The next chance of precipitation (rain) may not be until late Wed or Thu. && .AVIATION /06Z THURSDAY THROUGH MONDAY/... As of 1245 AM Thursday... 24 hour TAF period: Scattered to occasionally broken 5-8kft ceilings will accompany the passage of a mainly dry cold front that will move through the area through 09z Thy. Mostly sunny clear/sunny skies are expected during the day, followed by increasing mid and high level clouds during the evening and overnight hours. An unseasonably strong low-level jet will remain overhead, with an associated risk of low-level wind shear or mechanical turbulence tonight. Occasional nwly gustiness will be possible on Thu, strongest after daybreak and into early afternoon before diminishing. Outlook: An area of weak sfc low pressure and an attendant warm front will move into the area on Friday. The system may produce a band of light snow and/or flurries late Thursday night into early Friday, with sub-VFR restrictions possible, mainly across the northern terminals. Strong and gusty nnwly surface winds will result behind an Arctic cold front Sun afternoon and evening. && .RAH WATCHES/WARNINGS/ADVISORIES... None. && $$ SYNOPSIS...CBL NEAR TERM...CBL SHORT TERM...CBL LONG TERM...Kren AVIATION...CBL/MWS