An easterly airstream persists over the coastal waters of Guangdong. Meanwhile, showers associated with a trough of low pressure are affecting the northern part of the South China Sea.
The colors of the symbols below will change with the classifications of the tropical cyclone :
Severe Tropical Storm
Typhoon
Analysed position
Severe Typhoon
Forecast position
Super Typhoon
Past track
Forecast track
Notes
Only tropical cyclones located within the area bounded by 7-36N and 100-140E will be shown on this website. The past tropical cyclone track and analysed positions may be updated when additional data is received:
When Tropical Cyclone Warning Signal No. 1 or above is in force, the hourly analysed tropical cyclone position will be shown.
When the tropical cyclone is within the area bounded by 10-30N and 105-125E, the tropical cyclone track is updated eight times a day at 0:30, 3:30, 6:30, 9:30, 12:30, 15:30, 18:30 and 21:30 HKT, about one and a half hours after the time of observation.
When the tropical cyclone is beyond the area bounded by 10-30N and 105-125E but within the area bounded by 7-36N and 100-140E, the tropical cyclone track is updated twice a day at noon and midnight about four hours after the time of observation.
Detailed information of the tropical cyclone, including latitude, longitude, classification and the maximum sustained wind will be shown when placing the mouse cursor over the analysed or forecast positions. The tropical cyclone symbol and its track are overlaid over a map. The user can use the controls on the left of the map to change the area of interest and to zoom into city or even street levels. Please bear in mind the uncertainties of the tropical cyclone locations as described below in using this function.
The uncertainties, based on average errors, of the latest analysed position and forecast positions are represented by yellow circles on the map and are of the order of:
Analysed position
30 km
24-hour forecast position
150 km
48-hour forecast position
250 km
72-hour forecast position
350 km
Short-term erratic departures of the tropical cyclone from the general direction of movement may occur from time to time. These departures are partly due to uncertainties in locating the centre of the tropical cyclone, and partly due to actual short-term variations in the direction and s
peed of movement of the tropical cyclone itself.
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Low Pressure Area or Extratropical Low
