023 FXUS62 KRAH 250002 AFDRAHArea Forecast Discussion National Weather Service Raleigh NC 802 PM EDT Wed Sep 24 2025
.SYNOPSIS... High pressure will extend from Bermuda to the South Atlantic coast ahead of a couple of slow-moving cold fronts that will merge while moving east across the Carolinas Thursday through Saturday.
&&
.NEAR TERM /THIS AFTERNOON THROUGH TONIGHT/... As of 125 PM Wednesday...
Hot and generally dry.
A chance of a late day thunderstorm in the far NW-N Piedmont.
Hot and dry conditions are favored for most if not all the region this afternoon. Temperatures early in the afternoon had already high 90 for most areas from RDU south and east. Additional mainly sunny skies will lead to highs in the upper 80s to lower 90s. A few of the CAMS depict a chance of a shower or storm later this afternoon into the evening in the NW Piedmont. However, the chance will be tied to the development of at least a few storms in the NW this afternoon with subsequent activity tied to outflow boundaries favoring the northern side of the Triad into VA. The extensive cloud shield to our west and north will gradually build into the region later this afternoon and tonight. A couple of disturbances tracking NE along the Appalachians may bring renewed chances of showers/iso thunderstorms later in the evening or overnight in the NW. Expect a warm night with the increase in clouds from the west. Lows generally in the mid 60s to lower 70s.
&&
.SHORT TERM /THURSDAY AND THURSDAY NIGHT/... As of 125 PM Wednesday...
Hot and increasingly unstable with a chance of PM thunderstorms.
Marginal risk of severe storms and isolated flooding.
All of central NC will be in the warm sector Thursday and Thursday night out ahead of the cold front approaching from the NW. Continued warm/moist advection through the low-levels will support temperatures reaching into the upper 80s to mid 90s with an increase in dew points as well. However, there are some models that suggest extensive mid level cloudiness that may keep the heat down a bit in the west on Thursday. Still, heat indices in the mid 90s to near 100 are expected from the Triangle into the Sandhills and southern/central Coastal Plain. Scattered thunderstorms are expected with the highest probabilities in the afternoon into the evening and mainly west of Interstate 95. There is still a chance of mainly evening showers/storms Thursday night, otherwise mostly cloudy with lows in the mid 60s to lower 70s.
&&.
.LONG TERM /FRIDAY THROUGH WEDNESDAY/... As of 150 PM Wednesday...
* Pattern continues to favor a prolonged period of unsettled weather Fri through the weekend and perhaps into early next week
* Risk for periods of heavy rainfall through the weekend
* We continue to watch AL94, but its ultimate track remains uncertain
A prolonged period of wet weather appears favored still in the Fri through Sun time period as an upper-low over the TN valley slowly migrates to the east and northeast into western NC come Sun. A moisture rich southerly flow will persist during this time (PW`s around 2 inches at 140-150 percent of normal), along with ample instability to favor potential periods of heavy rainfall, especially late Fri through Sat. An upper-jet will be overhead as well, favoring some enhanced lift aloft.
On Fri, scattered showers and storms look to develop along an old outflow from Thu, perhaps more focused over eastern sections of central NC. Favorable shear and instability could favor a few isolated strong to severe storms, but we are not currently outlooked at the moment. Additional showers will persist off/on into Sat morning. The wettest period thus far looks to be Sat into Sun when the region is in a more favorable location with respect to the trough. This is also when forecast confidence is higher and model spread is lower. Certainly cannot rule out a few strong storms also on Sat, in addition to the heavy rainfall threat.
Heading into the early to middle of next week, forecast confidence reduces dramatically, due in part to the aforementioned trough position, a high trying to build down the Mid-Atlantic, and any environmental shear over the Atlantic that could hamper the development of AL94. All of these features play a role in the tropical systems evolution. A decent set of clusters from the 00/06z ensembles take AL94 near the Bahamas late Sun or early Mon, then recurve the system to near Bermuda by midweek. There remains, however, a set of solutions that track the system toward the NW near the Carolinas early next week. It is a good time to stay weather aware and check back regularly for updates on the latest trends in the forecast. For now, an unsettled pattern may continue early next week.
As for temperatures, above normal highs will persist Fri in the 80s. A trend to more seasonal values is favored thereafter with 70s to low 80s.
&&
.AVIATION /00Z THURSDAY THROUGH SUNDAY/... As of 800 PM Wednesday...
Strengthening SW flow ahead of a slow moving trough and cold front will bring increasing moisture and rain chances, especially across across the western terminals.
At KINT and KGSO: A brief period of sub-VFR restrictions with showers and isolated thunder is possible through midnight. MVFR CIGS are expected to develop at KINT and KGSO around daybreak and should lift to VFR by early afternoon. Another round of showers and storms with restrictions is expected Thursday afternoon and evening.
At KRDU, VFR conditions are expected to prevail There is a low chance for showers and storms late in the period, but confidence is too low to include in the forecast at this time.
At KRWI and KFAY, while not as favorable as previous nights, mostly clear skies will support a chance for IFR to MVFR restrictions in fog and/or stratus around daybreak. Otherwise, dry VFR conditions through the period.
Outlook: The probability of showers and storms with associated flight restrictions will increase and overspread central NC on Friday. Unsettled conditions are expected to linger into the upcoming weekend and potentially into early next week as the slow- moving trough and surface cold front gradually cross the region.
&&
.RAH WATCHES/WARNINGS/ADVISORIES... None.
&&
$$
SYNOPSIS...MWS NEAR TERM...RAH SHORT TERM...RAH LONG TERM...Kren AVIATION...CBL
NWS RAH Office Area Forecast Discussion