Summary of July-August 2015 South Carolina King Tides
Highest Predicted Tide: 6.6′
Highest Observed Tide: 7.4′
Predicted King Tides: 2
Observed King Tides: 8
Onshore winds and a low pressure system amplified water levels along the South Carolina coast in late July and early August. The predicted two-day event spanned nine days under these meteorological conditions. During this series, water levels in Charleston Harbor peaked at 7.4 feet above Mean Low Low Water (MLLW) on July 29, which exceeded predictions by over one foot. The maximum observed difference occurred on July 25, when observed water levels surpassed predicted levels by nearly 1.5 feet.
| DATE | AM/PM | KING TIDE PREDICTED? | KING TIDE OBSERVED? | PREDICTED WATER LEVEL | OBSERVED WATER LEVEL | DIFFERENCE |
|---|---|---|---|---|---|---|
| July 25 | PM | No | Yes | 5.2 | 6.6 | 1.4 |
| July 26 | PM | No | No | 5.5 | 6.5 | 1.0 |
| July 27 | PM | No | Yes | 5.7 | 6.6 | 0.9 |
| July 28 | PM | No | Yes | 6.0 | 6.9 | 0.9 |
| July 29 | PM | No | Yes | 6.3 | 7.4 | 1.1 |
| July 30 | PM | No | Yes | 6.5 | 7.2 | 0.7 |
| July 31 | PM | Yes | Yes | 6.6 | 6.9 | 0.3 |
| August 1 | PM | Yes | Yes | 6.6 | 7.0 | 0.4 |
| August 2 | PM | No | Yes | 6.5 | 6.9 | 0.4 |
(Water levels in feet relative to MLLW at Charleston Harbor Tide Station.)
