Area Forecast Discussion
Issued by NWS Columbia, SC
Issued by NWS Columbia, SC
235 FXUS62 KCAE 280601 AFDCAE Area Forecast Discussion National Weather Service Columbia SC 101 AM EST Fri Nov 28 2025 .SYNOPSIS... Cool and dry weather conditions remain in place through Saturday. Rain chances increase on Sunday with several days of wet weather possible early next week. High pressure then builds back in for Wednesday. && .NEAR TERM /THROUGH TONIGHT/... Key message(s): - Cold weather continues with temps in the 20s tonight High pressure will build into the Mid Atlantic States through the near term with an upper ridge to our west. Cold, dry air will be over the area with daytime highs only in the upper 40s north to mid 50s south. Expect clear skies through the day but high clouds will begin to push overhead after sunset. Overnight, temperatures may drop quickly with just a few thin, high clouds at first. However cloud cover will continue to increase overnight leading to weaker net radiational cooling. With surface high pressure still off to our north a 15 to 20 kt LLJ will develop also hindering radiational cooling. Expect lows from the mid to upper 20s for most areas. && .SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/... Key message(s): - Cool and dry conditions continue Saturday with warmer temperatures Sunday. - Front approaches Sunday with isolated to scattered rain chances. Saturday and Saturday Night: Saturday should see the center of the surface high shifting off shore through the day as a upper trough and associated surface low move into the upper Midwest. Low level flow starts to shift more easterly through the day but the very dry and cold airmass hangs on with afternoon highs between the upper 40s to lower 50s. Dewpoints likely remain in the teens much of the day before steadily increasing overnight and into Sunday as low level flow becomes more southeasterly. Overnight lows should be a bit more mild with the increasing moisture, in the low to mid 30s but spots in the upper 20s will be possible. Sunday and Sunday Night: A cold front will work toward the FA Sunday as a warm advection regime sets up with deep southwesterly developing and PWAT`s that raise to near 1", up significantly from PWAT`s less than 0.30" just 24 hours prior. A couple warm advection showers could be possible early in the day ahead of the front, but the front is expected to enter the FA sometime during the afternoon and evening, likely stalling near the coast overnight. Outside of the surface front, forcing is relatively weak and thus there is some discrepancy amongst models on the coverage of potential showers during the afternoon and evening. At least isolated showers seem possible with the frontal passage with fairly light rainfall amounts. Due to the uncertainty in shower coverage and cloud cover, a fairly wide temperature gradient could be seen from NW to SE, ranging from the mid 50s in the northern Midlands and the Mid 60s toward the far eastern Midlands and CSRA. && .LONG TERM /MONDAY THROUGH THURSDAY/... Key message(s): - Isolated rain chances Monday before widespread rainfall is likely Tuesday. - Drier weather moves in for the midweek. General agreement in the pattern for the extended remains in global models and ensemble guidance outside of some slight timing issues with the next system. Another trough begins moving into the Central CONUS through the day Monday with moisture continuing to increase through the day (PWAT`s around 100-125% of normal). A couple shortwave impulses could spark isolated to scattered showers through the day and aid in developing in-situ wedging conditions with the bulk of the CWA likely north of the stalled front, bringing cooler than normal temperatures. As the trough continues eastward, cyclogenesis is expected along the Gulf coast along the stalled frontal boundary and this is where timing differences in the translation speed of the developing low exist. The deterministic GFS is the fastest solution with the low approaching and moving through the area overnight Monday and into Tuesday afternoon (thus highest PoP`s during this window) while the ECMWF is slower, bringing it through during the late morning and through the afternoon on Tuesday. Either way, significant moisture advection and forcing is expected to move in Tuesday from the low and upper trough, as PWAT`s in mean ensemble solutions reach above 200% of normal. This is expected to bring a much needed soaking rainfall to the FA Tuesday with widespread moderate to at times heavy rain possible. There is good agreement that as the trough and surface low move off the coast, surface high pressure should fill back in with drier conditions for the midweek. Temperatures Tuesday and Wednesday are expected to remain below normal before creeping back near normal into Thursday. && .AVIATION /06Z FRIDAY THROUGH TUESDAY/... VFR conditions expected through the next 24 hours. High pressure will build into Mid Atlantic States today promoting northwesterly winds around 5 to 10 knots until around 00Z when winds will become light and variable. A 15 to 20 kt LLJ tonight and the dry air mass will prevent any fog or stratus concerns but we will see an increase in high cloudiness through the night. EXTENDED AVIATION OUTLOOK...Low level moisture increases Saturday which will lead to higher chances for restrictions and widespread rain from Sunday into early next week. && .CAE WATCHES/WARNINGS/ADVISORIES... SC...None. GA...None. && $$