The ninth named storm of the 2019 Pacific typhoon season, Lekima originated from a tropical depression that formed east of the Philippines on 30 July.

In Malaysia, the typhoon brought up strong tides and partially destroyed the coastal areas of Penang.

On 2 August, the Japan Meteorological Agency (JMA) began to monitor a tropical depression which developed over the Philippine Sea.

The Joint Typhoon Warning Center (JTWC) also monitored the system and gave the identifier 10W early on 4 August.

Later that day, both JMA and JTWC upgraded Lekima to a typhoon, after the system developed a central dense overcast.

[8] On 8 August, the JTWC upgraded Lekima to a super typhoon, and stated that the system had acquired some of the annular characteristics.

At 1:45 a.m. China Standard Time (UTC+08:00) 10 August, Lekima made landfall in Wenling, Zhejiang with two-minute sustained winds of 185 km/h (115 mph).

Lekima emerged into the Yellow Sea early on 11 August,[19] and made second landfall in Xihai'an, Qingdao, Shandong at 8:50 p.m. CST, with two-minute sustained winds of 85 km/h (53 mph).

[21] Lekima meandered over the Shandong Peninsula and Bohai Sea throughout 12 August, and the JMA downgraded it to a tropical depression later that day.

[22] As Lekima moved northwestward and approached the northern part of the Philippines, PAGASA issued PSWS#1 to Batanes and the Babuyan Islands late on 6 August.

The JMA urged the residents on these islands to beware of high waves, heavy rain, and sudden gusts.

[26] As Lekima continued to approach the island, the CWB issued a land warning to the northern part of Taiwan early on the next day, locally.

[29] On late 8 August, school and work were cancelled for the next day in eight municipalities and counties in the northern part of Taiwan and in the Matsu Islands.

[33] Across China, more than one million people were evacuated in advance of the typhoon, including 260,000 in Shanghai and 800,000 in Zhejiang Province.

Che Jun, the Zhejiang Party Secretary, ensured measures to protect fisherman and ships were forced to return to port.

Authorities in Shanghai worked to secure outdoor facilities, billboards, and lighting structures to avoid typhoon damage.

[37] Though Lekima, locally known as "Hanna", did not directly affect the Philippines it contributed to the southwest monsoon which caused heavy rain to the nation.

[54] Wenling recorded peak wind gusts of 221 km/h (137 mph), while daily rainfall in Beilun District amounted to 291 mm (11.5 in).

[59] Due to the severe impact of the storm in China, the name Lekima was retired during the 52nd annual session of the ESCAP/WMO Typhoon Committee in February 2020.