What are the characteristics of Typhoon No.18 "Terry" and Typhoon No.19?
After further analyzing and judging the development trend and possible adverse effects of Typhoon Taili No.18 and Typhoon No.19, the National Defense General arranged for the deployment of flood control and typhoon prevention work, and started the Class III emergency response for flood control and typhoon prevention at 22: on September 12. What are the characteristics of Typhoon No.18 "Terry" and Typhoon No.19?
1. Typhoon twinning attacks, interwoven effects
It is estimated that "Teli" may land on the northern coast of Zhejiang from the night of 14th to the morning of 15th, and it is also likely to turn off in the offshore of Zhejiang on 15th and then move northeast. Whether "Teli" lands or not will have a serious impact on the east China coast. Typhoon No.19 may land on the coast from Hainan to western Guangdong on the 15th. In one day, two typhoons landed one after another or affected the coastal areas of East China and South China, with a large coverage of strong winds and heavy rains and a wide impact area of wave climax.
2. Energy keeps gathering, and the wind is strong
It is predicted that the wind will reach 14-16 in the peak period of "Teli", and the maximum wind force in the center will still reach 13-15 when landing or near the coast of Zhejiang, which may become the strongest typhoon affecting the east China coast this year. Typhoon No.19 may make landfall in its heyday, with winds of 13-14. The coastal areas of East China and South China will face the disadvantage of defending against two strong typhoons at the same time.
3. The storm water increase is high, and the sea conditions are bad
Affected by "Taili", there will be a big storm water increase from the Yangtze River estuary to the coastal areas of Fujian, and the largest storm water increase in the coastal areas of Zhejiang can reach 3 cm; The east of Taiwan Province and the south of the East China Sea will have the largest 13-meter surf zone, and the largest 7-meter surf zone will appear in the coastal waters of northern Zhejiang and Fujian.
Affected by Typhoon No.19, the maximum water increase of 16 cm will occur on the east coast of Leizhou Peninsula, the east coast of Hainan and the south coast; The east, north-central, northwest and Beibu Gulf of the South China Sea will have a maximum of 1 meters of wild waves; There will be a wild wave area with a maximum of 6 meters in the coastal waters of western Guangdong and eastern Hainan. Affected by two strong typhoons, the waves in the sea area are high, the typhoon waves are steep, the freak wave is easy to generate, and the sea conditions are very bad.
4. The typhoon has abundant water vapor and heavy rainfall intensity
Affected by two typhoons, the rainfall may last for 4 days, involving 1 provinces, autonomous regions and municipalities directly under the Central Government, including East China, South China and Southwest China. It is estimated that there will be a large range of heavy rainfall in the eastern, southern and southwestern parts of the Yangtze River from September 13 to 16, and the process rainfall in some areas of Zhejiang, Shanghai, Jiangsu, Fujian, Hainan and Guangdong will be 2-35 mm. If the landing point of Typhoon No.19 is northward, it will affect a larger area.
5. There are many influencing factors, and there are variables
With the weakening of the subtropical high and the adjustment of eastward withdrawal, after reaching its peak, "Taili" may move northeast close to the coast of Zhejiang. Influenced by continental high, subtropical high adjustment and southwest monsoon, Typhoon No.19 is still uncertain.
6. Typhoon in autumn is threatening and disastrous
According to the analysis of historical data, the intensity of typhoon in autumn has always been high, especially in the East China Sea. The area affected by "Teli" is the most economically developed area along the eastern coast of China, with dense cities, concentrated population, many high-rise buildings and numerous industrial and mining enterprises, and the flood control and typhoon prevention work is facing a major test.
The coastal areas of South China have been hit or affected by typhoons for many times, and the landing of Typhoon No.19 again will cause superimposed effects and even cause serious floods.