The bora is a northerly to north-easterly katabatic wind in areas near the Adriatic Sea. Similar nomenclature is used for north-eastern winds in other littoral areas of eastern Mediterranean and Black Sea basins.
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👉 Bora (wind) in the context of Acqua alta
An acqua alta (/ˌækwə ˈæltə/, Italian: [ˈakkwa ˈalta] ; lit. 'high water') is an exceptional tide peak that occurs periodically in the northern Adriatic Sea. The term is applied to such tides in the Italian region of Veneto. The peaks reach their maximum in the Venetian Lagoon, where they cause partial flooding of Venice and Chioggia; flooding also occurs elsewhere around the northern Adriatic, for instance at Grado and Trieste, but much less often and to a lesser degree.
The phenomenon occurs mainly between autumn and spring, when the astronomical tides are reinforced by the prevailing seasonal winds that hamper the usual reflux. The main winds involved are the sirocco, which blows northbound along the Adriatic Sea, and the bora, which has a specific local effect due to the shape and location of the Venetian Lagoon.
In this Dossier
Bora (wind) in the context of Port of Novorossiysk
Novorossiysk Sea Port (Russian: Новороссийский морской порт, NSP) is one of the largest ports in the Black Sea basin and the largest in Krasnodar Krai. At 8.3 km, the NSP berthing line is the longest among all the ports of Russia. The port is located on the Northeast coast of the Black Sea, in the Tsemes Bay (also called Novorossiysk Bay). The bay is ice-free and open for navigation all year round. However, in winter the navigation occasionally stops due to the hazardous northeastern bora wind. The Tsemes Bay allows deep-draft vessels up to 19 m, and the inner harbour up to 12.5 m. The liquid bulk terminals depth range from 8.4 to 15.6 m, suitable for tankers with a deadweight of up to 250,000 tons, like Suezmax-class vessels.
Bora (wind) in the context of Katabatic wind
A katabatic wind (named from Ancient Greek κατάβασις (katábasis) 'descent') is a downslope wind caused by the flow of an elevated, high-density air mass into a lower-density air mass below the force of gravity. The spelling catabatic is also used. Since air density is strongly dependent on temperature, the high-density air mass is usually cooler, and the katabatic winds are relatively cool or cold.
Examples of katabatic winds include the downslope valley and mountain breezes, the piteraq winds of Greenland, the Bora in the Adriatic, the Bohemian Wind or Böhmwind in the Ore Mountains, the Santa Ana winds in southern California, the oroshi in Japan, or "the Barber" in New Zealand.