Alert | N° | Date (UTC) | Max Winds (km/h) | Population in Tropical Storm or higher | Population in Cat 1. or higher | Countries |
| 1 | 07 Sep 2018 00:00 | 194 | 210 thousand | 160 thousand | Guam |
| 2 | 07 Sep 2018 06:00 | 204 | 210 thousand | 160 thousand | Guam |
| 3 | 07 Sep 2018 12:00 | 185 | 210 thousand | 160 thousand | Guam |
| 4 | 07 Sep 2018 18:00 | 213 | 210 thousand | 160 thousand | Guam |
| 5 | 08 Sep 2018 00:00 | 213 | 210 thousand | 160 thousand | Guam |
| 6 | 08 Sep 2018 06:00 | 176 | 210 thousand | 170 thousand | Northern Mariana Islands, Guam |
| 7 | 08 Sep 2018 12:00 | 185 | 210 thousand | 100 thousand | Northern Mariana Islands, Guam |
| 8 | 08 Sep 2018 18:00 | 250 | 210 thousand | 10 thousand | Northern Mariana Islands, Guam |
| 9 | 09 Sep 2018 00:00 | 213 | 210 thousand | 140 thousand | Northern Mariana Islands, Guam |
| 10 | 09 Sep 2018 06:00 | 185 | 3.5 million | 40 thousand | Northern Mariana Islands, Guam |
| 11 | 09 Sep 2018 12:00 | 241 | 24.9 million | 200 thousand | Northern Mariana Islands, Philippines |
| 12 | 09 Sep 2018 18:00 | 250 | 26.1 million | 820 thousand | Northern Mariana Islands, Guam, Philippines |
| 13 | 10 Sep 2018 00:00 | 250 | 25.7 million | 2.2 million | Northern Mariana Islands, Guam, Philippines |
| 14 | 10 Sep 2018 06:00 | 250 | 27 million | 750 thousand | Northern Mariana Islands, Guam, Philippines |
| 15 | 10 Sep 2018 12:00 | 259 | 65.2 million | 210 thousand | Guam, Northern Mariana Islands, Philippines |
| 16 | 10 Sep 2018 18:00 | 250 | 113 million | 1.2 million | Guam, Northern Mariana Islands, Philippines |
| 17 | 11 Sep 2018 00:00 | 250 | 151 million | 3.5 million | Guam, Northern Mariana Islands, Philippines, China |
| 18 | 11 Sep 2018 06:00 | 250 | 185.2 million | 31.6 million | Guam, Northern Mariana Islands, Philippines, China |
| 19 | 11 Sep 2018 12:00 | 250 | 190.1 million | 37 million | Guam, Northern Mariana Islands, Philippines, China |
| 20 | 11 Sep 2018 18:00 | 269 | 207.4 million | 43.4 million | Guam, Northern Mariana Islands, Philippines, China |
| 21 | 12 Sep 2018 00:00 | 259 | 217.7 million | 54.2 million | Guam, Northern Mariana Islands, Philippines, China |
| 22 | 12 Sep 2018 06:00 | 259 | 228.5 million | 42.6 million | Guam, Northern Mariana Islands, Philippines, China, Viet Nam |
| 23 | 12 Sep 2018 12:00 | 250 | 260 million | 40.8 million | Guam, Philippines, Northern Mariana Islands, China, Viet Nam |
| 24 | 12 Sep 2018 18:00 | 269 | 256 million | 27.3 million | Philippines, Guam, Northern Mariana Islands, China, Viet Nam |
| 25 | 13 Sep 2018 00:00 | 250 | 259.6 million | 31.4 million | Philippines, Guam, Northern Mariana Islands, China, Viet Nam |
| 26 | 13 Sep 2018 06:00 | 259 | 248.1 million | 47.8 million | Philippines, Guam, Northern Mariana Islands, China, Viet Nam, Laos, Myanmar |
| 27 | 13 Sep 2018 12:00 | 259 | 265.3 million | 34 million | Philippines, China, Guam, Northern Mariana Islands, Viet Nam |