Qian Qifeng, a senior engineer of the Central Meteorological Observatory, said that "Maria" has the characteristics of strong strength, rapid development and fast movement. At present, "Maria" is approaching China at a speed of about 30 kilometers per hour, and the future path is likely to bypass Taiwan Province Province and land directly in Fujian and Zhejiang. In this way, the typhoon core area will avoid the damage caused by the topography of Taiwan Province Province, and the intensity will be very strong when landing.

"It is particularly worth mentioning that' Maria' is likely to' slim down' before and after passing through Taiwan Province Island, throwing off the peripheral cloud system and becoming a small but extremely destructive miniature typhoon." Qian Qifeng said. Qian Qifeng said that "Maria" is strong because when it moves to the northwest, the lower layer has very good inflow conditions, and the upper layer has a good suction effect. Its convection development continues, resulting in obvious intensity development, and even the situation of rapid strengthening and maintaining a super typhoon level for a long time. In addition, it is a relatively compact typhoon. Generally speaking, the more compact the typhoon structure, the stronger its intensity will be.

Then it moves fast, because in the process of pushing westward, the western Pacific subtropical high is extending westward and strengthening. Maria is located on the south side of the subtropical high. Driven by the strong easterly southerly wind, the horizontal wind speed of the typhoon presents an obvious asymmetric structure. The east wind on the north side of the typhoon is obviously stronger than the west wind on the south side of the typhoon. The obvious asymmetry of the above wind speed is also one of the dynamic mechanisms of its strength maintenance and even enhancement at a high level.

"figuratively speaking, the relationship between the subtropical high and the typhoon is like a gyro. The subtropical high is a whip. The stronger the whip, the faster the gyro turns, which leads to the extremely fast movement of' Maria'. " Qian Qifeng said. Experts specially reminded that the range of strong winds (1 1 and above) and heavy precipitation (rainstorm and above) in Maria is relatively small, and the influence of peripheral cloud system is relatively weak, but it should not be taken lightly, because the wind and rain influence of typhoon will be strengthened rapidly in a short time, so we should be especially careful.