It was also part of the four tropical cyclones to simultaneously exist in the Western Pacific during the month of November, the first occurrence since records began in 1951; the other three were Yinxing, Toraji, and Usagi.

Early the next day, the JMA reported that the storm reached its peak intensity with ten-minute sustained winds of 195 km/h (120 mph) and a central pressure of 920 hPa (27.17 inHg).

After making landfall in Catanduanes, the system slightly degraded in appearance, with the western half becoming less organized as it passed north of the Calaguas Islands.

The typhoon accelerated northwestward over the South China Sea, with its low-level circulation center partially exposed and fragmented convective bands occurring along the southern and eastern edges of the system.

However, the storm rapidly deteriorated as it encountered a low-level northeasterly cold surge across the northern South China Sea and experienced increased vertical wind shear.

[1] By 09:00 UTC, the United States Joint Typhoon Warning Center (JTWC) issued a tropical cyclone formation alert for the disturbance, noting a favorable environment for development due to low to moderate vertical wind shear, good divergence aloft, and warm sea surface temperatures of 29–30 °C (84–86 °F).

[8] Man-yi wrapped around the northern and eastern quadrants of the circulation center, growing more intense as the vertical structure continued to align.

[14] The storm displayed cooling cloud tops in its central cold region, with rain bands becoming more defined and tightening around the formation of a developing eye.

[15] On November 15, the JMA upgraded the storm to a minimal typhoon, and the JTWC followed suit,[16] with satellite imagery revealing a symmetric eyewall surrounding an oblong eye and spiral banding extending over the eastern semicircle.

[19] Meanwhile, the JMA upgraded Man-yi to a violent typhoon, estimating its peak intensity with a minimum central pressure of 920 hPa (27.17 inHg) and 10-minute maximum sustained winds of 195 km/h (120 mph).

[22] After making landfall in Catanduanes, the system slightly degraded in appearance,[23] with the western semicircle becoming less organized and the cloud tops warming as it passed north of the Calaguas Islands.

[26] The following day, Man-yi made its second landfall in Dipaculao, Aurora, on Luzon Island at around 3:20 PM PHT (07:20 UTC) and quickly moved inland,[27][28] while storm chaser Josh Morgerman, located in Borlongan, Aurora, just inside the eye of the storm, measured a pressure of 951.8 mbar (28.11 inHg) and recorded a pressure gradient of 7.6 mbar (0.2244 inHg) per nautical mile.

[29] Man-yi accelerated northwestward over the South China Sea, with its low-level circulation center partially exposed and fragmented convective bands occurring along the southern and eastern edges of the system.

[34][35] Man-yi rapidly deteriorated as the storm encountered a low-level northeasterly cold surge across the northern South China Sea and experienced increased vertical wind shear.

[39] The JTWC issued its final warning on the same day as the system weakened to a tropical depression, while the JMA continued to monitor it until it was last noted at 06:00 UTC on November 20.

[14] Over the succeeding days, this was expanded to include an area stretching from Ilocos Norte in northern Luzon to the Dinagat Islands in northeastern Mindanao.

[49] The Land Transportation Franchising and Regulatory Board ordered the suspension of overland commercial passenger and cargo traffic passing through the port of Matnog, which connects Luzon with Visayas and Mindanao.

[68] Panic-buying occurred in Tacloban,[69] Ligao and Nabua,[70] while in Virac, Catanduanes, queues formed around a hardware store giving out free plywood and other materials to barricade against strong winds.

[80] A tropical storm watch was in effect for the Mariana Islands on November 12,[81] with the Condition of Readiness at level 3 (COR 3), as Man-yi was located approximately 330 mi (530 km) east of Guam.

[94] The Office of Civil Defense reported that several areas in the Bicol Region were experiencing storm surges as Man-yi approached, with some buildings being flooded.

[115] A 130 ft (40 m)-section of a dike burst along the Talavera River in Aliaga, Nueva Ecija, inundating 490 acres (200 ha) of farmland.

[124] At least 8,000 homes were damaged or destroyed, and more than 100 cities and towns suffered power outages due to toppled electric poles.

[125] The government of Albay has pledged ₱1 million (US$20,304.57) in financial assistance and will provide mental health and psychosocial support to Catanduanes.

[127] The Philippine Air Force has deployed several units and placed others on standby to provide humanitarian assistance and disaster response in the wake of Man-yi.

[134] The Philippine Navy vessel BRP Apolinario Mabini assisted in delivering essential relief supplies to the communities affected in Catanduanes.

[135] Two Lockheed C-130 Hercules aircraft of the Philippine Air Force were also deployed to Catanduanes to carry out relief missions for the typhoon victims.

[136] The Department of Human Settlements and Urban Development allotted ₱15 million (US$304,568.53) for an emergency shelter response fund to support families whose homes were destroyed by the storm.

[140] He also urged government offices not to hold lavish Christmas parties in solidarity with victims on Man-yi and previous storms and donate funds allocated for such events to disaster relief instead.