Haifa District

The Haifa District coast runs south from the Lebanese border along the eastern Mediterranean, taking in Haifa Bay, the ancient city of Acre (Akko), and the remnants of Caesarea Maritima to the south. The Mediterranean tidal regime here is microtidal: the astronomical range at Haifa is 15–30 cm, varying with the lunar cycle but never approaching a metre. The near-enclosed Mediterranean basin, connected to the Atlantic only through the narrow Gibraltar Strait, supports a negligible tidal signal. What actually moves the water level along the Haifa District coast is atmospheric forcing — the inverse barometer effect (low pressure raises water level, high pressure lowers it) and the regional meteorological seiche that the eastern Mediterranean basin supports at a 2–5 day period. Persistent SW depressions tracking across the Levant can push water 0.3–0.5 m above the predicted astronomical level; high-pressure ridges can lower it by a similar amount. These anomalies can last 24–72 hours and are predictable from standard weather models. The Israel Meteorological Service and the National Institute of Oceanography (IOLR), based at Haifa's Carmel coast, monitor sea level and publish storm-surge advisories. Acre (Akko) is one of the oldest continuously inhabited cities on the eastern Mediterranean coast; the Crusader-era port and the Ottoman Old City are UNESCO-listed, and the ancient sea walls still define the shoreline. Caesarea Maritima, built by Herod the Great around 22 BCE, was the Roman-era capital of Judea — its offshore harbour stones are now submerged 2–3 m below present sea level, the combined result of post-Roman sea-level rise and localised land subsidence. The archaeological dive site at Caesarea is one of Israel's most-visited underwater sites. Open-Meteo Marine provides predictions on this site: accuracy ±45 min / ±0.2–0.3 m, though at this tidal range, the accuracy statement covers the full amplitude of the signal.