| 23 | 0300 SUN MAY 28 | Tropical Depression Aletta | 16.2N | 107.5W | N | 3 (3) | 1005 (29.68) | 29 (25) |
| 22 | 2100 SAT MAY 27 | Tropical Depression Aletta | 15.5N | 107.5W | STNRY | (0) | 1004 (29.65) | 34 (30) |
| 21 | 1500 SAT MAY 27 | Tropical Depression Aletta | 15.5N | 107.5W | STNRY | (0) | 1004 (29.65) | 34 (30) |
| 20 | 0900 SAT MAY 27 | Tropical Storm Aletta | 15.3N | 107.3W | NE | 3 (3) | 1000 (29.53) | 52 (45) |
| 19 | 0300 SAT MAY 27 | Tropical Storm Aletta | 15N | 107.7W | STNRY | (0) | 990 (29.23) | 69 (60) |
| 18 | 2100 FRI MAY 26 | Hurricane Aletta | 14.9N | 108W | NW | 2 (2) | 985 (29.09) | 75 (65) |
| 17 | 1500 FRI MAY 26 | Hurricane Aletta | 14.7N | 107.5W | W | (0) | 980 (28.94) | 81 (70) |
| 16 | 0900 FRI MAY 26 | Hurricane Aletta | 14.7N | 107.5W | STNRY | (0) | 979 (28.91) | 86 (75) |
| 15 | 0300 FRI MAY 26 | Hurricane Aletta | 14.8N | 107.9W | W | 1 (1) | 975 (28.79) | 92 (80) |
| 14 | 2100 THU MAY 25 | Hurricane Aletta | 15N | 107.5W | STNRY | (0) | 975 (28.79) | 92 (80) |
| 13 | 1500 THU MAY 25 | Hurricane Aletta | 15N | 108.2W | W | 5 (4) | 970 (28.64) | 104 (90) |
| 12 | 0900 THU MAY 25 | Hurricane Aletta | 15.1N | 107.7W | W | 8 (7) | 970 (28.64) | 104 (90) |
| 11 | 0300 THU MAY 25 | Hurricane Aletta | 15N | 107.2W | W | 8 (7) | 977 (28.85) | 92 (80) |
| 10 | 2100 WED MAY 24 | Hurricane Aletta | 15N | 106.1W | W | 6 (5) | 984 (29.06) | 81 (70) |
| 9 | 1500 WED MAY 24 | Hurricane Aletta | 14.5N | 105.7W | W | 6 (5) | 987 (29.15) | 75 (65) |
| 8 | 0900 WED MAY 24 | Tropical Storm Aletta | 14.6N | 104.7W | W | 7 (6) | 994 (29.35) | 63 (55) |
| 7 | 0300 WED MAY 24 | Tropical Storm Aletta | 14.6N | 103.8W | W | 7 (6) | 998 (29.47) | 58 (50) |
| 6 | 2100 TUE MAY 23 | Tropical Storm Aletta | 14.5N | 103.4W | W | 6 (5) | 1000 (29.53) | 52 (45) |
| 5 | 1500 TUE MAY 23 | Tropical Storm Aletta | 14.9N | 102.8W | W NW | 8 (7) | 1002 (29.59) | 46 (40) |
| 4 | 0900 TUE MAY 23 | Tropical Storm Aletta | 14.8N | 102.1W | WNW | 10 (9) | 1002 (29.59) | 40 (35) |
| 3 | 0300 TUE MAY 23 | Tropical Depression One-E | 14.7N | 101.8W | W NW | 13 (11) | 1003 (29.62) | 34 (30) |
| 2 | 2100 MON MAY 22 | Tropical Depression One-E | 14.2N | 100.7W | W NW | 13 (11) | 1004 (29.65) | 34 (30) |
| 1 | 1500 MON MAY 22 | Tropical Depression One-E | 13.5N | 99.7W | W NW | 13 (11) | 1005 (29.68) | 34 (30) |