Area Forecast Discussion
Issued by NWS Raleigh/Durham, NC
Issued by NWS Raleigh/Durham, NC
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292 FXUS62 KRAH 251025 AFDRAH Area Forecast Discussion National Weather Service Raleigh NC 625 AM EDT Sat Jul 25 2026 .WHAT HAS CHANGED... * Forecast has trended slightly cooler today, and a bit wetter through the early afternoon. * Rain chances for Sunday have trended lower over much of the area. && .KEY MESSAGES... As of 315 AM Saturday... 1) One more cloudy and fairly cool day today, with rain chances highest from early this morning through early afternoon. 2) By the end of the weekend, expect a return to more typical late July weather, with highs around 90 and mostly diurnally driven convection. Severe weather may be possible Tuesday night. && .DISCUSSION... As of 315 AM Saturday... KEY MESSAGE 1... One more cloudy and fairly cool day today, with rain chances highest from early this morning through early afternoon. Cold air damming conditions will persist over much of the area today. The surface frontal zone is analyzed to our S, across N AL/N GA, SC, and far SE NC, with a weak trough just W of the mountains from E TN up through E OH, and narrow and weak surface high pressure centered just off the Canadian Maritimes extending SW into central NC. The resulting light low level flow from the N and NE will ensure advection of lower dewpoints into our area today, keeping low level stability elevated. PW will remain high through midday, up to 125- 150% of normal, as a mid level shortwave trough moves in from the WNW. This combo of moisture and forcing for ascent should result in a blossoming of showers over much of the area, starting early this morning and lasting into early afternoon. (Thunderstorm chances are not zero but look to be low, given expected poor instability, and would likely be restricted to far S and SE areas.) The higher rain coverage should then shift into the Coastal Plain during the mid to late afternoon as the shortwave trough heads to our E and the backing low-mid level flow to northwesterly helps to dry out the column from NW to SE. The signals for widespread heavy rain are not as profound for today as we`ve seen the last few days, given the more limited convective contribution to lift. But the high PW and deep LCL-0C layer do suggest a continued risk for locally soaking downpours, mainly from the Triangle to the S and E, and a few flood advisories may be needed, particularly in those areas that have seen higher rain totals the last few days. Regarding temperatures, with a period of high rain chances and considerable cloud cover in the weakening CAD regime, highs will once again be below normal. Expect highs to range from the mid 70s NE to low 80s SW, 8 to 15 degrees below normal. KEY MESSAGE 2... By the end of the weekend, expect a return to more typical late July weather, with highs around 90 and mostly diurnally driven convection. Severe weather may be possible Tuesday night. By Sunday, the front that has been around central North Carolina should have moved far south to have minimal impact locally, and highs should rebound into the 80s everywhere. By Monday, highs will return to more typical upper 80s and lower 90s, continuing through the week. Tuesday is likely to be the warmest day with highs a few degrees warmer. Precipitation should also return to generally being diurnally- driven. While coverage should be isolated most days, the greatest coverage should occur Tuesday night with a front moving through the region. Early yesterday morning, SPC added areas from New Jersey down to the NC/SC border in an outlook for potential severe thunderstorms on Tuesday. This discussion is due before SPC issues their next update around 5am, but the potential certainly remains for strong to severe thunderstorms. Right now, it appears that the limiting factor could be timing of the frontal passage, which would likely be overnight Tuesday into Wednesday, therefore limiting potential instability. && .AVIATION /12Z SATURDAY THROUGH WEDNESDAY/... As of 625 AM Saturday... Adverse aviation conditions will dominate at all central NC terminals through much of the 24 hr TAF period. As a frontal zone settles to our south with a cool flow from the NE and N and lots of low level moisture over the region, IFR/LIFR conditions currently in place are likely to persist through at least early afternoon/~17z. Spotty light rain over the area will increase to fairly high rain chances at all sites, with a chance of thunder in the southeast including FAY. Much of the area will trend to MVFR cigs between 18z and 21z, and INT/GSO may become VFR for a few hours very late afternoon into early evening. A return to IFR conditions is expected tonight, particularly after 08z. Surface winds will be light, under 8 kts, from the NE or N today, becoming very light and variable or calm after 21z through tonight. Looking beyond 12z Sun, adverse aviation conditions (MVFR-IFR) are likely to hold until mid morning Sun, with VFR conditions expected at all sites by 16z. An isolated stray shower or storm is possible in the far W late Sun (INT/GSO) and in the far E late Mon (FAY/RWI), but overall we`ll see drier VFR conditions. More typical late-day shower and storm chances will return for Tue-Wed. && .CLIMATE... Record High Minimum Temperatures: July 28: KGSO: 75/2025 KRDU: 77/2023 July 29: KGSO: 75/2025 && .RAH WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...Hartfield/Green AVIATION...Hartfield