July 2016 North China cyclone

July 2016 North China cyclone

The extratropical cyclone at peak intensity over North China on July 20, 2016
Type Extratropical cyclone
Formed July 19, 2016
Dissipated July 21, 2016
Lowest pressure 992 hPa (29.29 inHg)
Maximum rainfall 692 mm (27.24 in)[1]
Damage $4.96 billion (2016 USD)
(Preliminary total)
Casualties at least184 total, 130 missing
Areas affected Central, North, Northeast and Southwest China

The July 2016 North China cyclone was a devastating extratropical cyclone which produced torrential precipitation and caused widespread flash floods over North China and portions of nearby regions, resulting in at least 184 deaths and ¥33.19 billion (US$4.96 billion) of damage in China.[2][3]

Meteorological history

Map plotting the track and intensity of the storm according to the Saffir–Simpson hurricane wind scale

The meiyu front persisted over the region between Huai River and Yangtze during mid-July since the dissipation of Typhoon Nepartak.[4] 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.[5] 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).[6][7] Slowly drifting north-northeastward, the system quickly occluded right before 08:00 CST (00:00 UTC) on July 20 and reached peak intensity over Hebei at around 14:00 CST (06:00 UTC), with the central pressure at 992 hPa (29.29 inHg); however, surface sustained winds remained below gale-force.[8][9] The low quickly lost its fronts after that and weakened owing to disconnected from the Southwest Monsoon.[10] It became almost stationary near Beijing until it dissipated after 20:00 CST (12:00 UTC) on July 21.[11]

Impact

A muddy village in Xingtai

Throughout the municipalities of Beijing, Chongqing and Tianjin as well as the provinces of Guizhou, Hebei, Heilongjiang, Henan, Inner Mongolia, Jilin, Liaoning, Shandong, Shanxi, Sichuan and Yunnan, the extratropical cyclone brought torrential rainfalls and caused severe flash floods, which affected 15,597,000 people, with 184 deaths, 130 missing and ¥33.19 billion (US$4.96 billion) of damage. 575,000 people were evacuated, and 155,000 people need an emergency relief. More than 129,500 houses are collapsed, and at least 361,000 houses are damaged. The damaged agricultural areas are 12,049 km2, including 807 km2 of the destroyed agricultural areas.[2][3]

See also

References

  1. ↑ "华北东北黄淮部分地区洪涝风雹灾害" (in Chinese). Ministry of Civil Affairs. July 21, 2016. Archived from the original on July 22, 2016. Retrieved July 22, 2016.
  2. 1 2 "华北东北黄淮强降雨致289人死亡失踪" (in Chinese). Ministry of Civil Affairs. July 25, 2016. Archived from the original on July 25, 2016. Retrieved July 25, 2016.
  3. 1 2 "西南部分地区洪涝灾害致80余万人受灾" (in Chinese). Ministry of Civil Affairs. July 25, 2016. Archived from the original on July 25, 2016. Retrieved July 25, 2016.
  4. ↑ "Database of Weather Charts for Hundred Years". Digital Typhoon. Retrieved July 22, 2016.
  5. ↑ 鄭明典 (July 18, 2016). "異常的太平洋副熱帶高壓帶". Facebook (in Chinese). Central Weather Bureau. Retrieved July 22, 2016.
  6. ↑ 漠北 (July 20, 2016). "2016年7月20日起北方暴雨的成因，以及同之前南方暴雨的关系是什么？" (in Chinese). Zhihu. Retrieved July 22, 2016.
  7. ↑ "Marine Weather Warning for GMDSS Metarea XI 2016-07-19T12:00:00Z". WIS Portal – GISC Tokyo. Japan Meteorological Agency. July 19, 2016. Retrieved July 22, 2016.
  8. ↑ "Marine Weather Warning for GMDSS Metarea XI 2016-07-20T00:00:00Z". WIS Portal – GISC Tokyo. Japan Meteorological Agency. July 20, 2016. Retrieved July 22, 2016.
  9. ↑ "Marine Weather Warning for GMDSS Metarea XI 2016-07-20T06:00:00Z". WIS Portal – GISC Tokyo. Japan Meteorological Agency. July 20, 2016. Retrieved July 22, 2016.
  10. ↑ 朱茜 (July 20, 2016). "谁是北方极端暴雨的"罪魁祸首"？" (in Chinese). China News Service. Retrieved July 22, 2016.
  11. ↑ "天気図 平成28年7月21日21時" (in Japanese). Japan Meteorological Agency. July 21, 2016. Archived from the original (PNG) on July 22, 2016. Retrieved July 22, 2016.
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