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Tropical Cyclone Warning for Shipping

Tropical Cyclone Warning |  Track and Positions of Tropical Cyclones
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Severe Weather Information Centre

Bulletin issued at 03:30 HKT 26/Jul/2017


Tropical Cyclone Warning

Tropical Storm Sonca (1708) has weakened into a Tropical Depression with central pressure 998 hectopascals. At 251800 UTC, it was centred within 90 nautical miles of one six point nine degrees north (16.9 N) one zero five point four degrees east (105.4 E) and is forecast to move west at about 8 knots for the next 24 hours.

Maximum winds near the centre are estimated to be 30 knots.

Radius of over 2 metre waves 45 nautical miles.

No further warnings on this Tropical Depression will be issued by the Hong Kong Observatory unless re-intensification takes place.

Forecast position and intensity at 261800 UTC
Dissipated over land.




The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half 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.

While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

Tropical Cyclone Track