Alert | N° | Date (UTC) | Max Rainfall (mm) | Pop >100mm or higher | 50-100 | 100-250 | 250-500 | 500-750 | 750-1000 | >1000 | Countries |
| 1 | 19 May 2023 12:00 | 137 | - | | - | - | - | - | - | China, Japan, Micronesia |
| 2 | 20 May 2023 00:00 | 138 | - | | - | - | - | - | - | Micronesia |
| 3 | 20 May 2023 12:00 | 368 | - | | - | - | - | - | - | China, Micronesia, Malaysia |
| 4 | 21 May 2023 00:00 | 327 | - | | - | - | - | - | - | Philippines, Micronesia |
| 5 | 21 May 2023 12:00 | 254 | - | | - | - | - | - | - | China, Micronesia, Malaysia |
| 6 | 22 May 2023 00:00 | 278 | - | | - | - | - | - | - | Japan |
| 7 | 22 May 2023 12:00 | 203 | - | | - | - | - | - | - | Taiwan, China |
| 8 | 23 May 2023 00:00 | 346 | - | | - | - | - | - | - | Taiwan |
| 9 | 23 May 2023 12:00 | 314 | - | | - | - | - | - | - | China |
| 10 | 24 May 2023 00:00 | 308 | 130 thousand | | | | - | - | - | Guam, Philippines |
| 11 | 24 May 2023 12:00 | 327 | 170 thousand | | | - | - | - | - | Northern Mariana Islands, Guam |
| 12 | 25 May 2023 00:00 | 167 | - | | - | - | - | - | - | Philippines |
| 13 | 25 May 2023 12:00 | 159 | 4 thousand | | | - | - | - | - | Taiwan |
| 14 | 26 May 2023 00:00 | 252 | - | | - | - | - | - | - | China, Philippines |
| 15 | 26 May 2023 12:00 | 142 | - | | - | - | - | - | - | China |
| 16 | 27 May 2023 00:00 | 209 | - | | - | - | - | - | - | North Korea |
| 17 | 27 May 2023 12:00 | 134 | - | | - | - | - | - | - | South Korea, China, Palau |
| 18 | 28 May 2023 00:00 | 114 | - | | - | - | - | - | - | China, Philippines |
| 19 | 28 May 2023 12:00 | 93 | - | | - | - | - | - | - | Japan, South Korea, China, Philippines |
| 20 | 29 May 2023 00:00 | 175 | 70 thousand | | | - | - | - | - | Japan, China, Philippines |
| 21 | 29 May 2023 12:00 | 554 | 8.1 million | | | | - | - | - | Japan, South Korea, Taiwan, Philippines, Micronesia, Indonesia |