Hagupit particularly impacted the Philippines in early December while gradually weakening, killing 18 people and causing $114 million (2014 USD) of damage in the country.

[4][5] Under a favorable environment, the typhoon underwent rapid deepening and reached peak intensity northwest of Palau on December 4, with a clear eye.

[17] With low vertical wind shear and excellent radial outflow, Hagupit consolidated further on December 2 and was upgraded to a severe tropical storm by the JMA and a typhoon by the JTWC at noon.

[19] Remaining in a favorable environment, Hagupit underwent rapid deepening in the afternoon on December 3 and as a result, the JTWC upgraded it to a super typhoon due to the system depicting a significant eye.

[23] The JMA analyzed that Hagupit had reached peak intensity at 06:00 UTC, with the 10-minute maximum sustained winds at 215 km/h (134 mph) and the central pressure at 905 hPa (26.72 inHg).

[6] However, the system then started an eyewall replacement cycle and due to moderate easterly vertical wind shear, became less symmetric, with the bulk of the deep convection displaced over the western semi-circle.

[24] As Hagupit slowed down and continued a weakening trend, the eye became cloud-filled early on December 5, and as a result, was no longer equivalent to Category 5 of the SSHWS.

[25][26] Because of a robust poleward outflow channel into the mid-latitude westerlies to the north, the eye became clearer and was surrounded by a symmetric annulus of intense convection; the JMA also indicated the brief intensification at noon.

[27] Moreover, a slight break in the steering and the zonal flow along the southern periphery of the mid-latitude trough lacked the dynamics to influence Hagupit, making the typhoon move westward very slowly.

[7][29] At 21:15 PST (13:15 UTC), Typhoon Hagupit made landfall over Dolores, Eastern Samar, with the 10-minute maximum sustained winds of 165 km/h (103 mph).

[32][33] After its fourth landfall over San Juan, Batangas at 17:45 PST (09:45 UTC), the JMA downgraded Hagupit to a tropical storm at noon.

[9][34] On December 9, deep convection over the LLCC weakened significantly when Hagupit arrived at the South China Sea and turned westward, although good poleward outflow channel tapping into the mid-latitude westerlies helped the system sustain its minimal tropical storm intensity.

[35] Hagupit briefly intensified in the afternoon on December 9, under moderate vertical wind shear offset by vigorous poleward outflow into the strong westerly flow to the north.