Tropical Cyclone Warning for Shipping
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Centre
Bulletin issued at 19:00 HKT 17/May/2008
Tropical Cyclone Warning
At 170900 UTC, Severe Tropical Storm Halong (0804) with
central pressure 975 hectopascals was centred within 30
nautical miles of one six point one degrees north (16.1 N)
one one nine point five degrees east (119.5 E) and is
forecast to move northeast at about 15 knots for the next
24 hours.
Maximum winds near the centre are estimated to be 55 knots.
Radius of over 33 knot winds 150 nautical miles.
Radius of over 47 knot winds 60 nautical miles.
Radius of over 2 metre waves 240 nautical miles.
Forecast position and intensity at 180900 UTC
One nine point nine degrees north (19.9 N)
One two four point zero degrees east (124.0 E)
Maximum winds 55 knots.
Forecast position and intensity at 190900 UTC
Two five point nine degrees north (25.9 N)
One three zero point zero degrees east (130.0 E)
Maximum winds 55 knots.
Forecast position and intensity at 200900 UTC
Three five point one degrees north (35.1 N)
One four zero point four degrees east (140.4 E)
Maximum winds 50 knots.
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.
Tropical Cyclone Track
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