Due to the deteriorating conditions of the typhoon, the JMA and the JTWC downgraded the system to a tropical storm, before issuing their final warning as it became extratropical on July 15.

Although the system was in a "marginal upper-level area" with moderate vertical wind shear, the circulation center and surrounding convection began to take shape.

[1][2] The system further consolidated with "deep convective banding" and improving upper level conditions, with the Joint Typhoon Warning Center issuing a Tropical Cyclone Formation Alert, several hours later.

[6] The PAGASA issued their final bulletin for the storm as it left out of their area of responsibility, before hitting Ryukyu Islands as a Category 4 super typhoon.

There were no public storm wind signals raised due to the typhoon expected not to make landfall in the Philippines; however, the PAGASA stated that Man-yi will induce the southwest monsoon, which can trigger landslides and flash floods, particularly in the western section of the country.

[11] The United States Military upgraded the Tropical Cyclone Condition of Readiness (TCCOR) levels for Kantō, Yokosuka, Sasebo and Okinawa on the afternoon of July 12 as Man-yi neared the islands.

[15] Despite Man-yi exiting the PAR on July 13, the big rainbands of the typhoon associated with the prevailing southwest monsoon brought heavy rainfall in parts of the Northern, Central and the Southern Luzon.

[16] Some TV footages showed high winds in Shizuoka's central prefecture pounding rocky shorelines, and a landslide in Chiba to the further north flattened one home.