Area Forecast Discussion
Issued by NWS Columbia, SC

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000 FXUS62 KCAE 252349 AFDCAE Area Forecast Discussion National Weather Service Columbia SC 749 PM EDT Thu Apr 25 2024 .SYNOPSIS... High pressure will build into the region today with the remnants of a frontal boundary to our south. The front will push back towards the north some Friday, and lead to a slight chance of afternoon showers, mainly western areas. Fair Saturday through Monday with a warming trend. A cold front is expected to bring a slight chance of showers and thunderstorms late Tuesday and Wednesday. && .NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
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High pressure will continue to build down into the area from the northeast this evening with winds shifting more east to southeasterly allowing for low level moisture return into tonight. While overall moisture expected to remain low through tonight with almost all HREF members indicating PWATs remain below an inch. Low clouds will be possible with the onshore flow late tonight into early Friday morning. Low temperatures remain near seasonal average, in the mid-50s.
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&& .SHORT TERM /6 AM FRIDAY MORNING THROUGH SATURDAY NIGHT/... Surface high pressure axis to extend into our region Friday, with the old front set up just to our south and west. GEFS ensemble guidance, as well as the HREF CAMs suite, has consistently indicated a slight chance of rain across the western FA as southeasterlies create some upslope flow. This feels reasonable, and should yield a shower or two Friday afternoon. Mid-level clouds are likely to be hanging around out there during the afternoon hours, helping keep temps a bit cooler than they have been the past couple days but still in the mid and upper 70s. Mid-level clouds are likely to continue Friday night, holding lows in the mid and upper 50s. Partly sunny skies are expected Saturday, with mid/upper level ridging really beginning to build into the area. This will suppress any attempts at precip and should yield highs back in the low 80s. && .LONG TERM /SUNDAY THROUGH THURSDAY/... High confidence in the long term, as LREF members continue to show an unfavorable pattern for significant weather. Slow moderation of afternoon highs is likely, with guidance slowly stepping us from the low 80s Sunday into the upper 80s or low 90s by Wednesday of next week. Our next chance at rain really doesn`t look like much of a chance. The upper ridging will weaken slightly by Wednesday, allowing a weak cold front to approach the region. This feature is unimpressive at this point, so maintained the slight chance PoPs that the NBM has currently. Overnight lows will likely moderate into the low 60s by mid week as surface moisture increases. && .AVIATION /23Z THURSDAY THROUGH TUESDAY/...
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MVFR ceilings expected toward morning in central SC. High pressure centered north of the area with onshore flow developing. High clouds moving into the area from the west overnight. More importantly, low-level moisture is expected to advect southwest from eastern NC and guidance is indicating a high probability of stratus development during the 09z-15z time frame at the CAE/CUB and OGB terminals. AGS and DNL are expected to remain VFR. Higher confidence for MVFR than IFR at the moment. The low clouds should lift by 16z. The boundary layer appears mixed overnight so do not expect fog. Mainly mid level ceilings after 18z Friday. Winds east or east-southeast 5 to 10 knots after 12z. EXTENDED AVIATION OUTLOOK...Widespread aviation impacts unlikely through Tuesday.
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&& .CAE WATCHES/WARNINGS/ADVISORIES... SC...None. GA...None. && $$

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