FXUS62 KCHS 201105 AFDCHS
Area Forecast Discussion National Weather Service Charleston SC 705 AM EDT Fri Mar 20 2026
.WHAT HAS CHANGED...
The Marine and Aviation sections were updated.
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.KEY MESSAGES...
- 1) Quiet weather and warming temperatures through the
weekend.
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.DISCUSSION...
KEY MESSAGE 1: Quiet weather and warming temperatures through the weekend.
Sfc high pressure continues to prevail across the region heading into the weekend, allowing dry conditions to persist. In regard to temperatures, expect highs in the low to mid 70s Friday to gradually warm back into the lower 80s by Saturday. Temperatures continue to soar into the mid to upper 80s by Sunday and Monday with the aid of mostly sunny skies and southwesterly flow. May even see a few locations across our interior Georgia counties take a shot at 90 degrees.
A strong backdoor cold front will then push south Monday night/early Tuesday morning, resulting in breezy winds and cooler, more seasonal temperatures for Tuesday and Wednesday. As noted in the previous discussion, rain chances continue to diminish, with latest guidance struggling to produce any meaningful PoPs across the area. Otherwise, look for above normal temperatures to return Thursday.
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.AVIATION /12Z FRIDAY THROUGH TUESDAY/...
VFR conditions will prevail at KCHS, KJZI, and KSAV through 12z Saturday.
Extended Aviation Outlook: There are no high confidence concerns.
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.MARINE...
Today through Tuesday: Conditions across the local waters are expected to remain below Small Craft Advisory thresholds through the weekend. Southwest flow will build a bit beginning early Saturday morning and continue into Monday. There will likely be periods of time with speeds getting into the 15-20 knot range. The biggest impact for the waters will come Monday night and into Tuesday in the wake of a backdoor cold front. The arrival of some cooler air behind the front and a pinching of the gradient will yield a notable northeasterly surge. Solid Small Craft Advisory conditions appear likely for all of the waters, with frequent gusts up to around 30 knots. There is even some support for a period of gusts possibly up to around gale force, meaning that Gale Watches and Warnings could eventually be needed.
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.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None. SC...None. MARINE...None.
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BSH/SST