Marine Weather and Tide Forecast for Sullivan's Island, SC

KEY MESSAGES
- 1) Dry conditions and seasonable temperatures expected this weekend and into next week.

DISCUSSION
KEY MESSAGE 1: Dry conditions and seasonable temperatures expected this weekend and into next week.

Dry high pressure will build across the Southeast United States this weekend and prevail through early next week. Cold air advection post fropa will set the stage for noticeably cooler temps today and Sunday, although are expected to remain above normal for afternoon highs, generally in the mid-upper 70s this afternoon, then low-mid 70s Sunday afternoon. Overnight periods will feature cooler temps as well while high pressure settles across the area, sfc winds become rather light, and a fair amount of radiational cooling takes place under more substantial clearing. In general, temps should dip into the mid 40s inland to mid-upper 50s near the coast tonight, then a few degrees cooler Sunday night.

High pressure will reside across the Southeast early into the middle of next week, setting the stage for rebounding temps as a west flow becomes more pronounced across the local area. In general, afternoon highs should return to the mid-upper 70s. However, light winds and radiational cooling nights will continue to support lows in the low- mid 40s inland to low-mid 50s near coastal areas into the middle of next week.

AVIATION /06Z SATURDAY THROUGH WEDNESDAY/
Light northwest flow is expected at all terminals tonight while a cold front shifts further offshore and away from the area. TEMPO MVFR conditions are possible at JZI as low-lvl moisture lingers.
Otherwise, guidance continues to support a round of MVFR to IFR cigs and possibly reduced vsbys at CHS/JZI terminals around daybreak, generally between the 09Z-12Z timeframe. Conditions improve to VFR thereafter with a north-northeast flow setting up. VFR conditions are also expected to prevail at SAV through 06Z Sunday.

Extended Aviation Outlook: Prevailing VFR conditions are expected at CHS/JZI/SAV terminals.

MARINE
Behind the cold front that pushed through yesterday, west- northwesterly winds will become north-northeasterly throughout the morning hours. As this occurs, the winds will become increasingly breezy with gusts ranging from 15 to 20 knots, highest across the South Carolina offshore (20-60nm zones) waters, and weakest in the nearshore Georgia waters. Seas of 3 to 5 feet are expected. Winds remain intermittently breezy overnight into Sunday, with gusts increasing back into the 15 to 20 knot range throughout the daytime hours. Thereafter, winds and seas should gradually diminish into early next week with generally quiet conditions and no marine hazards expected.

CHS WATCHES/WARNINGS/ADVISORIES
GA...None.
SC...None.
MARINE...None.