📋 Tender Overview
According to the National Center for Hydro-Meteorological Forecasting, storm No. 4 (international name NARRA) is forecast to have a quite complex trajectory, slow moving speed and may change direction many times in the Gulf of Tonkin. Download Track of storm No. 4 on the afternoon of August 22. The National Center for Hydrometeorological Forecasting said that at 6:00 p.m. on August 22, the location of the storms center: About 21.1 degrees North latitude; 108.0 degrees East Longitude, in the coastal area of Quang Ninh-Hai Phong, 130 km east of Quang Ninh, far from City. Hai Phong is 140km east northeast, about 110 km north of Bach Long Vi special zone. Strongest wind: Level 8 (62-74km/h), level 10 gusts. Forecast: In the next 3 hours, the storm moves little or slowly in the east, speed about 5km/h; In the next 24 to 72 hours, the storm is likely to continue to change direction, moving north-northeast at a speed of about 5 km/h and gradually weaken into a tropical depression. Explaining the unusual path of storm No. 4, Director of the National Center for Hydrometeorological Forecasting Mai Van Khiem said that the storm is operating in the tropical convergence zone with an axis passing through the North and north of the Gulf of Tonkin. In this environment, the large-scale conduction current field is relatively weak, and does not form a stable path guide. Therefore, the storm is not clearly dominated by one dominant direction of movement. Along with that, storms are simultaneously affected by surrounding weather systems and dynamic processes within the storm vortex. When these factors change over time, the direction and speed of the storm also change, causing the trajectory to change direction many times instead of following a fixed direction. This is also the reason why storm No. 4 moves very slowly, at times almost not moving in the Gulf of Tonkin. Mr. Mai Van Khiem noted that the slow movement of the storm and the constantly changing trajectory will prolong the impact time of the circulation. Prolonged heavy rain, extreme rain points appear In addition to strong winds near the center of the storm, the worrying risk is prolonged heavy rain, extreme rain points appearing, leading to flash floods and landslides. Due to the influence of storm No. 4, in Bach Long Vi special zone (Hai Phong) there was strong wind level 8, gusting level 9; Co To special zone (Quang Ninh) has strong winds at level 6, with gusts at level 9; At Mong Cai station (Quang Ninh) there is strong wind level 7, gusting level 9; At Uong Bi station (Quang Ninh) there is strong wind level 6; At Phu Lien station (Hai Phong city), there are strong winds of level 6, gusts of level 7. Due to the impact of the storm, the Gulf of Tonkin (including special zones: Bach Long Vi, Van Don, Co To, Cat Hai; Hon Dau island), coastal waters of Quang Ninh province and City. Hai Phong is at risk of strong winds at level 6-7, the area near the center of the storm passes through at level 8, with gusts of level 10; Sea waves are 2.0-4.0m high; Strong sea conditions. Dangerous weather conditions can cause capsizing, sinking or damage to fishing vessels, transport vessels, tourist boats and other means of operation at sea; Aquaculture cages, boat anchorages and coastal structures are at risk of damage. Fishery exploitation, transportation and tourism activities at sea are likely to be disrupted. The coastal mainland areas of Quang Ninh province and Hai Phong city have strong winds of level 6-7, with gusts of level 8-9. Strong winds can blow off roofs, damage temporary structures, and break trees and advertising signs; affecting the electricity and transportation systems. Notably, the storm circulation combined with the tropical convergence zone will cause a period of prolonged heavy rain in the North. Areas affected by heavy rain are the Northeast, southern Phu Tho and Thanh Hoa provinces. From the evening of August 22 to the end of August 24, the common rainfall is 60-120mm, locally in some places over 200mm; Particularly Quang Ninh, City. Hai Phong is commonly 150-250mm, locally in some places it is over 400mm; Lang Son and Bac Ninh are commonly 100-200mm, locally in some places over 300mm. The rain forecast is likely to continue after August 24. Heavy rain may cause flooding in urban areas, industrial parks and low-lying areas; increasing the risk of floods on small rivers and streams, flash floods and landslides in mountainous areas.Thu CucSee moreElectrical industry responding to storm No. 4: Reduce thermal power capacity in Quang Ninh and Hai Phong if strong winds are above level 9. See moreStorm No. 4 hit level 10, heavy rain in Quang Ninh and Hai Phong
