Beirut Coast

Lebanon's Mediterranean coast is microtidal. The astronomical range at Beirut is 0.2–0.4 m on springs — small enough that seiches and storm surges routinely dominate over the gravitational signal. The eastern Mediterranean is prone to meteorological seiches: resonance-driven oscillations of 0.2–0.6 m with periods of 10–40 minutes that can occur in otherwise calm conditions and produce unexpected surges against seawalls and harbour entrances. Beirut's Corniche faces west into the open Mediterranean; Jounieh sits in a sheltered bay 20 km north, partly protected by the headland of Raas Nawss; Tyre (Sour) is 80 km south of Beirut, an ancient Phoenician peninsula city with shallow reef-lined approaches. The tidal data for all three comes from the Open-Meteo Marine gridded model, which captures the astronomical signal but does not model seiches.