textproduct: Columbia

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

WHAT HAS CHANGED

Some areas of dense fog will linger through sunrise in the southern Midlands. Aviation discussion updated for the 12z TAF issuance.

KEY MESSAGES

- 1. Seasonable temperatures and dry conditions are expected this weekend and into next week.

DISCUSSION

Key Message 1: Seasonable temperatures and dry conditions are expected this weekend and into next week.

Expansive high pressure will build across the FA this weekend behind the departing cold front. Cool, dry air will bring temperatures into the mid to low 50s early this morning and into the 40s tonight and Sunday night. Some patchy fog may develop in sheltered locations this morning due to lingering low-level moisture, though widespread fog is not anticipated. High temperatures will trend slightly cooler but remain near climatological normals for this time of year. As the surface high gradually shifts southward, light southerly flow will allow temperatures to gradually rebound through the middle of next week, with widespread highs in the mid to upper 70s and overnight lows in the 40s. Guidance becomes more varied towards next weekend; however, mean PWAT values below 0.75 inches across both the GEFS and Euro ensembles generally support continued dry conditions.

AVIATION /12Z SATURDAY THROUGH WEDNESDAY/

Fog-stratus likely through 14z with associated restrictions, VFR expected Saturday morning onward.

A reinforcing front is moving through the region, with some low level moisture remaining in place ahead of and directly proceeding. As a result, some stratus and fog is occurring, bringing some IFR-MVFR restrictions to AIK, DNL, AGS, and OGB; based on satellite, the restrictions are fairly patchy so a tempo should cover the impacts. These will continue through 13z or so before quick improvement to VFR the remainder of the TAF period. Some borderline LLWS is also expected along this front, but should remain below TAF criteria with 20-25 knots of LLWS. After 13z or so, all sites will remain VFR through the period with north- northeast winds today up to 10 knots.

EXTENDED AVIATION OUTLOOK...Dry air will likely prevent widespread restrictions through the extended.

CAE WATCHES/WARNINGS/ADVISORIES

SC...Dense Fog Advisory until 8 AM EST this morning for SCZ037-038- 135>137. GA...None.

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