Taipei, June 19 (CNA) The Central Weather Bureau (CWB) on Tuesday issued an alert for four cities and counties in southern Taiwan, saying they can expect extremely heavy rain, strong winds and thunderstorms in the day.
The weather alert was prompted by the approach of a tropical depression and southwesterly winds, which are also bringing heavy rains and similar conditions to central Taiwan and the offshore counties, the bureau said.
The extremely heavy rain alert was issued for Tainan and Kaohsiung cites and Chiayi and Pingtung counties, warning of more than 200mm of rainfall over a 24-hour period or more than 100mm over three hours.
Meanwhile, a heavy rain warning extended to Taichung and Nantou cities and the counties of Changhua, Yunlin, Taitung, Penghu and Kinmen, which are likely to see more than 80mm of rainfall over a 24-hour period, or more than 40mm within an hour, according to the CWB.
CWB forecaster Chang Cheng-chuan (張承傳) said the weather conditions are expected to deteriorate throughout the day Tuesday and residents of the areas listed in the warnings should be alert to sudden downpours, strong winds and thunderstorms.
He advised that people in central and southern Taiwan avoid outdoor activities in mountainous and coastal areas.
Temperatures were forecast to drop slightly to 27-28 degrees Celsius in central Taiwan on Tuesday, and 29 degrees in the south of the country.
In northern Taiwan, meanwhile, the weather is forecast to remain sunny, with sporadic showers on Tuesday afternoon and highs of 32-34 degrees.
The unstable weather and heavy rains in the southern half of the country are being caused mainly by a tropical depression in the area and seasonal southwesterly winds, the CWB said.
(By Chen Wei-ting and Frances Huang)