Taipei: The Central Weather Administration (CWA) has issued an extremely heavy rain advisory for Orchid Island and a heavy rain alert for parts of central and southern Taiwan. The advisories were announced at 7:25 a.m. Wednesday and are expected to remain effective through late afternoon, as stated by the weather agency. According to Focus Taiwan, intense short-duration rainfall is anticipated on Wednesday due to the influence of a stationary front. Orchid Island, located off the southeastern coast of Taiwan, is likely to encounter localized heavy or extremely heavy rain. Additionally, areas in central and southern Taiwan, including the Taitung area and Green Island, are forecasted to experience localized heavy rain. The CWA's rain alert specifically covers Taichung, Changhua County, Nantou County, and Yunlin County in central Taiwan, as well as Chiayi City, Chiayi County, Tainan, Kaohsiung, Pingtung County, including the Hengchun Peninsula, and Taitung County in the south. People in these regions are urged to remain vigilant against possible lightning, strong gusts, landslides, and falling rocks in mountainous areas, as well as flooding in low-lying areas. Under the CWA's classification, heavy rain is characterized by a 24-hour accumulated rainfall exceeding 80 millimeters or a 1-hour rainfall surpassing 40 mm. Extremely heavy rain indicates a 24-hour accumulated rainfall of more than 200 mm or a 3-hour accumulated rainfall exceeding 100 mm. As of Wednesday at 10 a.m., Orchid Island recorded the highest rainfall amount across Taiwan, with 120 mm, followed by the Kending Meteorological Radar Observatory on the Hengchun Peninsula with 105 mm. Daytime temperatures in northern Taiwan are expected to reach around 24 to 25 degrees Celsius, while other regions may see highs of approximately 27 to 28 degrees. The CWA forecasted lows of around 21 degrees in northern Taiwan and 24 to 26 degrees elsewhere. Meanwhile, independent meteorologist Wu Der-rong predicts a gradual rise in temperatures across Taiwan starting Fr iday as the frontal system weakens and moves eastwards.