Area Forecast Discussion
Issued by NWS Columbia, SC
Issued by NWS Columbia, SC
313 FXUS62 KCAE 011804 AFDCAE Area Forecast Discussion National Weather Service Columbia SC 204 PM EDT Sat Nov 1 2025 .SYNOPSIS... Dry conditions continue through Sunday with shower chances returning Sunday night into Monday. Several days of dry conditions to follow with a gradual warming trend. && .NEAR TERM /THROUGH TONIGHT/... Key message(s): - Dry and cool Surface high pressure remains in place over the area. Expect highs today in the mid 60s. An inverted, coastal trough develops tonight as an upper trough digs into the eastern US. This will allow for easterly low-level flow to develop. Moisture will increase slightly keeping lows tonight warmer than the previous night. In addition, a few high clouds will lead to more limited radiational cooling. So lows tonight are expected to remain in the upper 30s to low 40s. && .SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/... Key message(s): - An approaching trough will bring widespread rain chances late Sunday into Monday. Upper trough will be digging into the Tennessee Valley Sunday with southwest flow aloft leading to increasing moisture. This will lead to increasing clouds across the forecast area. Progression of the trough seems to be coming into better agreement among global models. The trough overall remains positively tilted leading to a quicker progression through the forecast area. Developing low pressure along baroclinic zone at the South Carolina coast will lead to increasing isentropic lift in the eastern portion of the area. As a result, precip chances will increase late in the day Sunday and into Sunday night. HREF PWAT mean around 1 to 1.1 inches so rain not expected to be all that heavy but blended guidance does continue to increase pops, especially in the Pee Dee. With HREF members now in range as well, confidence is increasing in at least light rain Sunday night into Monday morning. While most of the area will likely experience light rain, HiRes guidance is indicating strengthening frontogenesis near the northern and eastern border of the forecast area which could lead to a band of some enhanced amounts, potentially over an inch as indicated by the HREF PMM. With the more progressive movement of the upper trough, expect drier air moving in for Monday afternoon and while some light rain showers will remain possible in the eastern area, strongest frontogenesis is expected to push north of the area. Highs both Sunday and Monday, generally in the mid 60s with lows in the mid 40s. && .LONG TERM /TUESDAY THROUGH FRIDAY/... Key message(s): - Near to slightly above average and dry through the rest of the week. Broad high pressure settles over the Southeast Tuesday. Upper ridging begins to strengthen over the lower Mississippi Valley. Ensemble means have generally trended a bit stronger with this ridge, with NAEFS mean indicating greater than 90th percentile heights over the Deep South, although not quite extending into the forecast area. This has led to blended guidance coming in a bit warmer for temperatures next week to near average Tuesday and slightly above average through the rest of the week. The most notable point of slightly above average temperatures is frost will be unlikely each night, even with relatively favorable radiational cooling with high pressure the dominant feature. && .AVIATION /18Z SATURDAY THROUGH THURSDAY/... River valley fog possible again, otherwise VFR. Winds will be light throughout the 24 hour TAF period and generally out of the E or ENE, becoming calm overnight. A few high clouds are expected to move into the area tonight so radiational cooling should not be as strong. However there may still be a few pockets of clear sky which allow brief periods of river valley fog to develop and bring restrictions to OGB and AGS. Any restrictions would quickly dissipate after sunrise with light, east winds returning. EXTENDED AVIATION OUTLOOK...The next chance for widespread restrictions and rainfall will be late Sunday and early next week as another front approaches. && .CAE WATCHES/WARNINGS/ADVISORIES... SC...None. GA...None. && $$