Allison was a TS Atlantic tropical cyclone that existed from June 24 to July 1, 1989 (8 days). It reached peak winds of 51 mph (45 kt) and a minimum central pressure of 999 mb. The storm made one landfall on June 26 at 28.7°N, 95.7°W.
| Time (UTC) | Status | Lat | Lon | Winds (kt) | Pressure (mb) | Record |
|---|---|---|---|---|---|---|
| 1989-06-24 18:00 | TD | 27.00 | -96.00 | 30 | 1008 | |
| 1989-06-25 00:00 | TD | 27.00 | -96.00 | 30 | 1006 | |
| 1989-06-25 06:00 | TD | 27.20 | -96.00 | 30 | 1005 | |
| 1989-06-25 12:00 | TD | 27.40 | -95.90 | 30 | 1005 | |
| 1989-06-25 18:00 | TD | 27.60 | -95.80 | 30 | 1005 | |
| 1989-06-26 00:00 | TS | 27.80 | -95.80 | 35 | 1004 | |
| 1989-06-26 06:00 | TS | 28.10 | -95.80 | 35 | 1004 | |
| 1989-06-26 12:00 | TS | 28.60 | -95.70 | 40 | 1003 | |
| 1989-06-26 13:00 | TS | 28.70 | -95.70 | 40 | 1002 | Landfall |
| 1989-06-26 18:00 | TS | 29.10 | -95.70 | 45 | 1001 | |
| 1989-06-27 00:00 | TS | 29.70 | -95.70 | 45 | 999 | |
| 1989-06-27 06:00 | TS | 30.20 | -95.30 | 35 | 1000 | |
| 1989-06-27 12:00 | TD | 30.60 | -94.90 | 30 | 1002 | |
| 1989-06-27 18:00 | TD | 30.90 | -94.60 | 30 | 1004 | |
| 1989-06-28 00:00 | EX | 31.10 | -94.20 | 30 | 1004 | |
| 1989-06-28 06:00 | EX | 31.10 | -93.90 | 30 | 1005 | |
| 1989-06-28 12:00 | EX | 31.00 | -93.70 | 30 | 1006 | |
| 1989-06-28 18:00 | EX | 30.60 | -93.80 | 25 | 1007 | |
| 1989-06-29 00:00 | EX | 30.50 | -94.20 | 25 | 1008 | |
| 1989-06-29 06:00 | EX | 30.30 | -94.60 | 25 | 1008 | |
| 1989-06-29 12:00 | EX | 30.10 | -95.00 | 25 | 1008 | |
| 1989-06-29 18:00 | EX | 29.80 | -95.20 | 25 | 1008 | |
| 1989-06-30 00:00 | EX | 29.60 | -95.30 | 20 | 1009 | |
| 1989-06-30 06:00 | EX | 29.70 | -95.70 | 20 | 1010 | |
| 1989-06-30 12:00 | EX | 30.40 | -95.70 | 20 | 1011 | |
| 1989-06-30 18:00 | EX | 31.10 | -95.50 | 20 | 1010 | |
| 1989-07-01 00:00 | EX | 31.80 | -95.10 | 20 | 1010 | |
| 1989-07-01 06:00 | EX | 32.30 | -94.50 | 20 | 1010 | |
| 1989-07-01 12:00 | EX | 32.80 | -93.80 | 20 | 1010 |
Source: NOAA National Hurricane Center HURDAT2 best-track database (nhc.noaa.gov/data). Data is in the public domain. Best-track positions and intensities are post-storm reanalysis estimates and may differ from real-time advisories.