Time series of water-level measurements made during Hurricane Isaac

Time series of water-level measurements made during Hurricane Isaac in late August, 2012. Top panel shows water-level measurements in shallow wells placed in the beach 143 m apart on either side of the island in the northern Chandeleur Islands (eastern Gulf of Mexico measurements in blue, western Chandeleur Sound measurements in purple. Also shown are observed (red) and predicted (pink) water levels at the NOS Waveland Station WYCM6 – 8747437. Middle panel is the water surface slope across the island, positive from Gulf to Sound (east to west). Low-pass filtered slopes are shown in thick black lines, unfiltered in light-gray. Bottom panel: maximum range of water surfaces during running 20-min intervals.