| 15 | 2100 TUE MAY 30 | Tropical Depression Aletta | 16.4N | 103.9W | W | 6 (5) | 1007 (29.74) | 29 (25) |
| 14 | 1500 TUE MAY 30 | Tropical Depression Aletta | 16N | 103.5W | W | 6 (5) | 1005 (29.68) | 34 (30) |
| 13 | 0900 TUE MAY 30 | Tropical Depression Aletta | 16N | 102.8W | W | 5 (4) | 1005 (29.68) | 34 (30) |
| 12 | 0300 TUE MAY 30 | Tropical Depression Aletta | 16N | 102.3W | W | 5 (4) | 1004 (29.65) | 34 (30) |
| 11 | 2100 MON MAY 29 | Tropical Storm Aletta | 15.9N | 102.1W | W | 6 (5) | 1004 (29.65) | 40 (35) |
| 10A | 1800 MON MAY 29 | Tropical Storm Aletta | 16N | 101.8W | W | (0) | 1002 (29.59) | 40 (35) |
| 10 | 1500 MON MAY 29 | Tropical Storm Aletta | 16N | 101.4W | W | 2 (2) | 1002 (29.59) | 40 (35) |
| 9 | 0900 MON MAY 29 | Tropical Storm Aletta | 16.2N | 101W | N | 2 (2) | 1002 (29.59) | 46 (40) |
| 8 | 0300 MON MAY 29 | Tropical Storm Aletta | 16N | 101W | N | 2 (2) | 1002 (29.59) | 46 (40) |
| 7 | 2100 SUN MAY 28 | Tropical Storm Aletta | 15.8N | 101W | N | 2 (2) | 1002 (29.59) | 46 (40) |
| 6 | 1500 SUN MAY 28 | Tropical Storm Aletta | 15.5N | 101.3W | STNRY | (0) | 1002 (29.59) | 46 (40) |
| 5 | 0900 SUN MAY 28 | Tropical Storm Aletta | 15.4N | 101W | STNRY | (0) | 1002 (29.59) | 46 (40) |
| 4 | 0300 SUN MAY 28 | Tropical Storm Aletta | 15.7N | 101W | STNRY | (0) | 1003 (29.62) | 40 (35) |
| 3 | 2100 SAT MAY 27 | Tropical Storm Aletta | 15.6N | 100.5W | NE | 3 (3) | 1003 (29.62) | 40 (35) |
| 2 | 1500 SAT MAY 27 | Tropical Depression One-E | 15.1N | 101.3W | N | 5 (4) | 1004 (29.65) | 34 (30) |
| 1 | 1000 SAT MAY 27 | Tropical Depression One-E | 14.5N | 101.5W | STNRY | (0) | 1005 (29.68) | 29 (25) |