The meiyu front persisted over the region between Huai River and Yangtze during mid-July 2016 since the dissipation of Typhoon Nepartak.
Meanwhile, the subtropical ridge over the northwest Pacific Ocean was located unusually southward and westward, which blocked the Southwest Monsoon and made it completely flow into mainland China.
On July 19, as the westerlies collided with the strong Southwest Monsoon, cyclogenesis began within the front and formed an extratropical cyclone over Henan, China at around 20:00 CST (12:00 UTC).
The cyclone quickly reached peak intensity at around 02:00 CST (18:00 UTC) on July 20, with the central pressure at 994 hPa (29.35 inHg).
Drifting north-northeastward with surface sustained winds below gale-force, the system started to weaken slowly in the province of Hebei after 14:00 CST (06:00 UTC) and occluded right before 02:00 CST (18:00 UTC) on July 21, owing to the disconnection from the Southwest Monsoon.
It became almost stationary near Beijing until it dissipated after 20:00 CST (12:00 UTC) on July 21.
The meiyu front persisted over the region between Huai River and Yangtze during mid-July 2016 since the dissipation of Typhoon Nepartak. Meanwhile, the subtropical ridge over the northwest Pacific Ocean was located unusually southward and westward, which blocked the Southwest Monsoon and made it completely flow into mainland China. On July 19, as the westerlies collided with the strong Southwest Monsoon, cyclogenesis began within the front and formed an extratropical cyclone over Henan, China at around 20:00 CST (12:00 UTC). The cyclone quickly reached peak intensity at around 02:00 CST (18:00 UTC) on July 20, with the central pressure at 994 hPa (29.35 inHg). Drifting north-northeastward with surface sustained winds below gale-force, the system started to weaken slowly in the province of Hebei after 14:00 CST (06:00 UTC) and occluded right before 02:00 CST (18:00 UTC) on July 21, owing to the disconnection from the Southwest Monsoon. It became almost stationary near Beijing until it dissipated after 20:00 CST (12:00 UTC) on July 21.
July 2016 North China cyclone