The probabilities of issuing severe weather warning signals
Update Time: 2024-07-21 23:00
| Signals | Forecast Period | Probability |
| Typhoon Signal No.1 | In effect | |
| Typhoon Signal No.3 | Between midnight and morning on 22nd | Relatively low to medium |
| "blue" Storm Surge Warning | In effect | |
| "yellow" Storm Surge Warning | Low | |
The tropical storm Prapiroon over the northern part of the South China Sea has been intensifying, and was moving north-northwest in past few hours. According to the latest track forecast, it will make landfall at the Hainan Island, between early times and morning on Monday(22nd), remaining over 400 km away from Macao. However, under the influence of the outer rainband of Prapiroon, more frequent showers with thunderstorms are expected between tonight and tomorrow, with winds reaching wind force 6 with gust occasionally. The SMG will consider to issue higher tropical cyclone warning signals, depending on the latest track and intensity changes, before Prapiroon makes landfall. Meanwhile, tropical cyclone “Gaemi” will continue to develop over the sea east of the Philippines, and it is expected to move towards the sea east of the Taiwan region.
Meanwhile, under the combined influence of the astronomical tide, flooding of 0.3 meters or below (based on the road level of Porto Interior) is forecasted to occur within the inner harbor area in the morning on Monday. The public is advised to stay tuned with the latest weather information and take necessary precautions against strong winds and 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.