FXUS62 KCHS 202320 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 720 PM EDT Mon Apr 20 2026

.WHAT HAS CHANGED...

The Aviation and Marine sections were updated.

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.KEY MESSAGES...

- 1) Rain-free conditions dominate this week as high pressure

prevails.

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.DISCUSSION...

KEY MESSAGE 1: Rain-free conditions dominate this week as high pressure prevails.

Quiet coniditons continue to prevail across the region under sfc high pressure, with latest observations showing mostly sunny skies and temperatures in the upper 60s to lower 70s. Should see these values rise a bit more through the afternoon, as highs top off in the mid to upper 70s. Expect much of the same Tuesday, with highs moderating back into the mid to upper 80s by the end of the week as the aforementioned high pressure drifts offshore.

Unfortunately, no rainfall is in the forecast until late this weekend, and even that is uncertain. Dry conditions will lead to an enhanced fire danger through the week, with RH values dropping less than 25% across inland locations every afternoon. That being said, winds only look to peak around 10 to 15 mph, which should keep the threat for fire weather headlines low. Nonetheless, we encourage folks to exercise extreme caution if burning and heed any local burn bans as conditions remain very dry.

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.AVIATION /00Z TUESDAY THROUGH SATURDAY/...

00Z TAFs: VFR.

Extended Aviation Outlook: Dry high pressure keeps VFR conditions in place through much of the coming week. A sea breeze is possible each afternoon and evening.

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.MARINE...

High pressure continues to build overhead. Expect tranquil conditions to persist for the remainder of the week.

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.CHS WATCHES/WARNINGS/ADVISORIES...

GA...None. SC...None. MARINE...None.

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