Hong Kong Observatory issues typhoon standby signal as Tropical Storm Podul draws closer
- Storm centred about 800km from city and could bring heat and haze
- Six air quality monitoring stations flag health risk between ‘very high’ and ‘serious’
A tropical cyclone caused Hong Kong’s air quality to drop on Wednesday, with the city’s Observatory issuing a typhoon signal No 1 at 2.40pm.
Tropical Storm Podul was centred about 630km southeast of the city at 5pm and forecast to move at about 25km/h toward Hainan Island. It brought hot and hazy weather to the city.
The Observatory said the chance of the signal being upgraded to No 3 on Thursday was not high, as Podul would maintain a distance of more than 500km from Hong Kong.
By 4pm, seven of the city’s 13 air quality monitoring stations – located in Central and Western district Kwun Tong, Tsuen Wan, Yuen Long, Tuen Mun, Tai Po and Tung Chung – had flagged a health risk of “very high” to “serious”.
Tung Chung recorded the worst threat, with ozone levels reaching above 300g micrograms per cubic metre and respirable suspended particles PM10 was above 70mcg/m3.
“Higher than normal levels of ozone and particulates have been recorded since noon,” an Environmental Protection Department spokesman said. He added more stations may report serious risks later in the day.
