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Possible warning signals to be issued due to the impact on "Rai"
Update Time: 2021-12-20 11:00
| Signals | Forecast Period | Probability |
| Typhoon Signal No.1 | In effect | |
| Typhoon Signal No.3 | at night on the 20th | Medium to relatively high |
| Typhoon Signal No.8 | early morning to morning on the 21st | Relatively low |
| "blue" Storm Surge Warning | In effect | |
| "yellow" Storm Surge Warning | evening on the 20th | Relatively low |
Tropical cyclone “Rai” has weakened into a severe tropical storm, and gradually turned moving northeast. It is expected to pass within 200 km south of Macao tomorrow. The rain band associated with “Rai” will affect Macao today and tomorrow with frequent rain persisting for a period of time. Although “Rai”is expected to weaken further, its forecast track will be quite close to Macao. Winds are expected to strengthen, reaching force 6 occasionally with gusts. The bureau will consider whether it is necessary to issue Tropical cyclone signal No.3 tonight. Public is advised to pay close attention to the weather change and the latest storm news.
Meanwhile, under the joint effect of storm surge and high astronomical tide, flooding is expected in Inner Harbor areas tonight. “Blue” Storm Surge Warning is in effect with expected flooding level below 0.5m. Public is advised to take precautions against flooding.
Remarks: The probabilities of issuing severe weather warning signals for the next one or two days are provided in the table. Public can learn the possibility of being affected by the tropical cyclone over the specific period of time in Macao so that necessary precautions can be well prepared earlier. Please keep notice of our latest information.