


Area Forecast Discussion
Issued by NWS Columbia, SC
Issued by NWS Columbia, SC
551 FXUS62 KCAE 121718 AFDCAE Area Forecast Discussion National Weather Service Columbia SC 118 PM EDT Sun Oct 12 2025 .SYNOPSIS... Low pressure off the North Carolina coast continues to move northward into tonight, providing cloudy, damp, and cool conditions this afternoon for most. The low is forecast to gradually move away by Monday, with high pressure bringing in drier air. High pressure is expected to prevail through the week, with dry weather and temperatures within a few degrees of normal. && .NEAR TERM /THROUGH TONIGHT/... Key message(s): - Mainly cloudy conditions this afternoon into tonight. - Rainfall over the eastern forecast area becomes more scattered this afternoon and evening, before moving out of the area tonight. The coastal low that is bringing rain to the area is now located off the southern North Carolina coast while an upper low is centered over the South Carolina coast. Rainfall continues to rotate around these features this afternoon, with some signs of dissipating some and becoming more scattered on radar. A few breaks in the clouds are being seen on satellite in the far western portions of the forecast area, where temps have been able to warm to around 70. Where the clouds have persisted, temps remain in the low to mid 60s and probably won`t warm much more than that. The low is forecast to move along the Outer Banks through the near term. As a result, the rainfall is expected to continue diminishing and becoming more widely scattered as we head into tonight. The rain is expected to exit the area from southwest to northeast as the low moves away. An additional 0.25" to potentially 0.5" is possible in the far eastern Midlands, but it should the rates should remain light enough to avoid any flooding issues. After the rain moves out, cloud cover should deteriorate as well, allowing for temps to drop into the mid to upper 50s. && .SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/... Key message(s): - Drying out with sunshine returning and warmer temperatures. The coupled upper trough and coastal low will continue to pull away from the region early Monday, bringing drier air back in the region. An upper ridge is progged to build across the central CONUS, slowly working eastward with surface high pressure starting to build in to the FA behind the coastal low. This should bring a pleasant day with mostly clear skies (outside of some morning cloudiness in the eastern Midlands and Pee Dee) and temperatures that warm to near average in the mid to upper 70s. Tuesday will see much of the same as the upper ridge inches a bit closer. Another afternoon with seasonal temperatures and dry conditions is expected. Overnight each night, lows are expected to fall into the mid 50s, possibly into the low 50s as strong radiational cooling conditions set up. && .LONG TERM /WEDNESDAY THROUGH SUNDAY/... Key message(s): - Seasonable temperatures and dry weather through the mid to late week. Wednesday through Friday continues with dry weather as the upper ridge in the central CONUS pushes overhead due to a amplified trough moving into the western US. A dry front is expected to pass sometime late Wednesday, ushering in a shot of even drier air for Thursday and Friday. Afternoon high temperatures should remain near normal to just below normal each day but overnight lows Thursday could be some of the coolest we have seen yet this fall as there is little indication for a hindrance to strong radiational cooling conditions, coupled with a cooler/drier air mass setting in behind the front. The weekend will see a more amplified pattern aloft as the deep trough digs into the Midwest/Great Lakes region, allowing moisture to slowly increase in the FA as flow becomes more southerly. Discrepancy exists between deterministic global models on how amplified the trough will be and the exact placement of an upper low and thus while there is a chance PoP`s increase toward the end of the weekend, confidence in this is low at the moment. && .AVIATION /18Z SUNDAY THROUGH FRIDAY/... Varying cigs and vis into tonight, then VFR conditions persist in the second half of the TAF period. Rain to become more scattered through about 00z, then moving out of the area tonight. Ceilings and visibilities are likely to bounce around for a while, mainly between MVFR and VFR, while the shower activity continues. Brief periods of IFR vis can`t be ruled out at OGB, however. MVFR cigs may hang around some after the rain, but suspect mainly VFR conditions will prevail and continue through the rest of the TAF period. Northwest winds around 8-10 kts are expected to continue, with gusts at OGB nearing 20 kts, through about 00z before shifting to more northerly. EXTENDED AVIATION OUTLOOK...VFR likely through the rest of the week. && .CAE WATCHES/WARNINGS/ADVISORIES... SC...None. GA...None. && $$