TABLE 1. Preliminary best track, Tropical Storm Aletta, 16―21 June 1988.
| TIME | POSITION | PRESSURE | WIND | ||||
| DATE | (UTC) | LATITUDE | LONGITUDE | (mb) | (kt) | STAGE | |
| 6/16 | 1800 | 14.3 | 101.4 | 1007 | 30 | Tropical Depression | |
| 6/17 | 0000 | 14.8 | 101.3 | 1004 | 35 | Tropical Storm | |
| 6/17 | 0600 | 15.2 | 101.3 | 1000 | 50 | " " | |
| 6/17 | 1200 | 15.5 | 101.4 | 997 | 50 | " " | |
| 6/17 | 1800 | 15.8 | 101.5 | 995 | 55 | " " | |
| 6/18 | 0000 | 16.1 | 101.6 | 993 | 60 | " " | |
| 6/18 | 0600 | 16.4 | 101.7 | 992 | 60 | " " | |
| 6/18 | 1200 | 16.7 | 101.9 | 992 | 60 | " " | |
| 6/18 | 1800 | 17.0 | 102.2 | 993 | 60 | " " | |
| 6/19 | 0000 | 17.2 | 102.6 | 995 | 55 | " " | |
| 6/19 | 0600 | 17.3 | 103.1 | 998 | 50 | " " | |
| 6/19 | 1200 | 17.5 | 103.6 | 1002 | 40 | " " | |
| 6/19 | 1800 | 17.5 | 104.2 | 1006 | 30 | Tropical Depression | |
| 6/20 | 0000 | 17.5 | 104.8 | 1008 | 25 | " " | |
| 6/20 | 0600 | 17.5 | 105.4 | 1009 | 20 | " " | |
| 6/20 | 1200 | 17.5 | 105.9 | 1010 | 20 | " " | |
| 6/20 | 1800 | 17.5 | 106.4 | 1011 | 20 | " " | |
| 6/21 | 0000 | 17.4 | 106.9 | 1011 | 15 | " " | |
| 6/21 | 0600 | 17.3 | 107.4 | 1012 | 15 | " " | |
| 6/21 | 1200 | 17.0 | 108.0 | 1012 | 15 | " " | |
| 6/18 | 1200 | 16.7 | 101.9 | 992 | 60 | Minimum Pressure | |
