The typhoon season has started exceptionally early this year, with Typhoon Neoguri heading on a track to the south coast of China. Neoguri is the first typhoon to affect Hong Kong this year and the second-earliest since the keeping of detailed weather records began in 1946. The standby signal No1 was issued by the Observatory at 4.15pm yesterday after Neoguri entered the 800km alert zone. At midnight it was about 660km south-southwest of Hong Kong and forecast to move north-northwest at 12km/h towards Hainan Island. The typhoon, with a centre wind force of 130km/h, is expected to bring strong winds to Hong Kong, with showers today and tomorrow, and some heavy rain predicted for Sunday and Monday. But its force may weaken as it draws closer. A goods van was blown over by a gust of wind at 8.25pm at the airport, where the Observatory said gusts of about 40km/h were being experienced last night. The driver and three passengers were slightly injured. Chan Chik-cheung, a senior scientific officer at the Observatory, said the early typhoon season might be linked to the La Nina phenomenon - lower seawater temperature in the eastern equatorial Pacific, which would create more favourable conditions for typhoon formation. Hong Kong's official typhoon season is between May and November.