Area Forecast Discussion
Issued by NWS Columbia, SC

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095 FXUS62 KCAE 251736 AFDCAE Area Forecast Discussion National Weather Service Columbia SC 136 PM EDT Thu Apr 25 2024 .SYNOPSIS...
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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.
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&& .NEAR TERM /THROUGH TONIGHT/... Weak high pressure will build into the region today with the remnants of a frontal boundary moving back into the forecast area tonight. As winds shift from northeasterly today then turn more easterly tonight, it will allow for moisture advection into the Southeast. Despite moisture increases we do not expect any showers just low clouds developing and some mid and upper clouds associated with the remains of the frontal boundary. High temperatures this afternoon will be in the upper 70s to low 80s with lows tonight in the low to mid 50s. && .SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
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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.
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&& .LONG TERM /SUNDAY THROUGH THURSDAY/...
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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.
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&& .AVIATION /18Z THURSDAY THROUGH TUESDAY/...
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Restrictions possible early Friday morning. Expect high pressure to prevent rainfall today and keep skies mostly clear with light NE winds becoming E overnight. As easterly winds develop, onshore flow will drive moisture into the area and may result in low clouds developing early Friday morning in the Pee Dee. The low clouds may move over the TAF sites around 09Z to 12Z but confidence is low. With increasing cloud cover tonight and a 10 to 20 kt LLJ around sunrise, widespread fog is unlikely to develop. However there may be a brief period of fog at fog prone AGS/OGB. Winds will pick up out of the east on Friday morning around 5 to 10 kts. Any possible restrictions should clear by 15Z or so. EXTENDED AVIATION OUTLOOK...Widespread aviation impacts unlikely through Monday. A front could enter the region near the end of the extended and bring convection and possibly restrictions.
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&& .CAE WATCHES/WARNINGS/ADVISORIES... SC...None. GA...None. && $$