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Tropical Cyclone Warning for Shipping


At 040600 UTC, Tropical Depression Bolaven (1801) has weakened into an area of low pressure.

No further warnings on this area of low pressure will be issued by the Hong Kong Observatory unless regeneration takes place.


The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about two hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public. Average errors in the 24, 48 and 72-hour forecast positions are of the order of 150, 250 and 350 kilometres respectively.
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