Marine Weather and Tide Forecast for Marietta, GA

SHORT TERM
(Today through Sunday)
Issued at 509 AM EDT Sat Oct 10 2026

Isaias has become post tropical but continues to be the major factor in the forecast for the remainder of the short term. It made landfall yesterday as a strong Category 2 and the remainder of the eye continues to make its way north through Alabama. Peak wind gusts for the metro area are expected after 8 AM and should finally begin to ease after midnight. Gusts up to 45 MPH will be possible during this time causing power outages and downed trees.

Rainfall totals through the short term continue to come in at around 2-4 inches, though the possibility for higher totals continues to dwindle in the areas of the heaviest rain bands this afternoon. As a result, our flood watch will continue until 8 AM on Sunday. There is the possibility the end time will change, given the speed at which the remnants of the storm are moving.

Tropical tornadoes will continue to be a threat that will ramp up as we introduce some heating to the area. The threat is largely along I- 85 and south though the metro is included in a Marginal Risk as well. Tropical tornadoes spin up quickly and are often short lived, but continue to have multiple ways of receiving warnings.

Lingering impacts from the storm are expected to come to an end Sunday evening as it's picked up by a strong northerly jet into the mid Atlantic. It's still a serious situation, so please continue to heed warnings and local authorities.

LONG TERM
(Sunday night through Friday)
Issued at 509 AM EDT Sat Oct 10 2026

The long term picks up after the remnants of Isaias are not but a memory. Dry air will settle in across the southeast and bring back a little bit of summer on the backside. Highs in the mid to upper 80s are expected as high pressure keeps winds out of the west. Drier conditions will start off the long term, but as the high slowly meanders to the east, we'll start to see a moisture return by the middle part of the work week brining afternoon heat index values back into the 90s.

Expect overnight lows to be comfortably in the 50s and 60s for much of the area with winds becoming light and variable during the overnight hours. By next weekend, some of the model runs are beginning to indicate the possibility for a strong cold front to push down from the north that will bring fall back into the region.
But for the meantime, enjoy a little bit more late summer and plenty of sunshine.

AVIATION
(12Z TAFS)
Issued at 629 AM EDT Sat Oct 10 2026

Strong NE winds to start off the TAF cycle with sustained 20kts and the occasional gust to 35kts. Winds will continue to to gust to around 35kts through the rest of the afternoon, though isolated higher gusts are possible. Low level wind shear will also linger through the day before resolving after 18Z as the remnants of Isaias begin to push off to the northeast. MVFR to IFR conditions will continue for both CIGS and VIS as wind driven rain continues. TSRA is possible after 14Z.

//ATL Confidence
12Z Update

Medium to high on all elements

Vaughn

PRELIMINARY POINT TEMPS/POPS
Athens 73 63 73 61 / 100 90 10 0 Atlanta 74 62 74 62 / 100 60 10 0 Blairsville 67 57 66 56 / 100 90 50 10 Cartersville 73 60 74 58 / 90 70 10 0 Columbus 81 61 79 60 / 80 20 0 0 Gainesville 69 62 70 62 / 100 90 20 0 Macon 81 63 78 60 / 100 70 0 0 Rome 72 57 74 54 / 90 70 20 0 Peachtree City 76 59 75 59 / 100 50 0 0 Vidalia 82 69 79 64 / 90 90 10 0

FFC WATCHES/WARNINGS/ADVISORIES
Flood Watch through Sunday morning for GAZ001>009-011>016- 019>025-027-030>039-041>062-066>076-078>086-089>098-102>113.

High Wind Warning until 8 AM EDT Sunday for GAZ001>009-011>016- 019>025-027-030>037-041>048-053>057.

Wind Advisory until 11 PM EDT this evening for GAZ038-039- 049>052-058>062-066>076-078>085-089>097-102>109.