| 25 | 0300 FRI SEP 28 | Post-Tropical Cyclone Miriam | 22N | 116.7W | S | 1 (1) | 999 (29.5) | 35 (30) |
| 24 | 2100 THU SEP 27 | Tropical Depression Miriam | 22.1N | 116.9W | W | 5 (4) | 1002 (29.59) | 35 (30) |
| 23 | 1500 THU SEP 27 | Tropical Storm Miriam | 22.2N | 116.3W | NW | 6 (5) | 1000 (29.53) | 40 (35) |
| 22 | 0900 THU SEP 27 | Tropical Storm Miriam | 21.8N | 116W | NNW | 6 (5) | 999 (29.5) | 45 (39) |
| 21 | 0300 THU SEP 27 | Tropical Storm Miriam | 21.5N | 115.7W | NNW | 7 (6) | 999 (29.5) | 45 (39) |
| 20 | 2100 WED SEP 26 | Tropical Storm Miriam | 20.8N | 115.4W | N | 7 (6) | 994 (29.35) | 60 (52) |
| 19 | 1500 WED SEP 26 | Tropical Storm Miriam | 20N | 115.7W | NNW | 6 (5) | 992 (29.29) | 65 (56) |
| 18 | 0900 WED SEP 26 | Tropical Storm Miriam | 19.5N | 115.5W | NW | 6 (5) | 990 (29.23) | 70 (61) |
| 17 | 0300 WED SEP 26 | Hurricane Miriam | 19.1N | 115.2W | NW | 5 (4) | 983 (29.03) | 80 (69) |
| 16 | 2100 TUE SEP 25 | Hurricane Miriam | 18.9N | 114.9W | WNW | 5 (4) | 979 (28.91) | 85 (74) |
| 15 | 1500 TUE SEP 25 | Hurricane Miriam | 18.7N | 114.5W | WNW | 5 (4) | 969 (28.61) | 100 (87) |
| 14 | 0900 TUE SEP 25 | Hurricane Miriam | 18.7N | 114.3W | NW | 6 (5) | 968 (28.59) | 105 (91) |
| 13 | 0300 TUE SEP 25 | Hurricane Miriam | 18.5N | 113.9W | NW | 8 (7) | 968 (28.59) | 105 (91) |
| 12 | 2100 MON SEP 24 | Hurricane Miriam | 18.1N | 113.5W | NW | 9 (8) | 960 (28.35) | 120 (104) |
| 11 | 1500 MON SEP 24 | Hurricane Miriam | 17.7N | 112.9W | NW | 12 (10) | 958 (28.29) | 120 (104) |
| 10 | 0900 MON SEP 24 | Hurricane Miriam | 17.3N | 112.2W | NW | 13 (11) | 971 (28.67) | 105 (91) |
| 9 | 0300 MON SEP 24 | Hurricane Miriam | 16.8N | 111.3W | NW | 12 (10) | 979 (28.91) | 90 (78) |
| 8 | 2100 SUN SEP 23 | Tropical Storm Miriam | 16.1N | 110.5W | WNW | 10 (9) | 994 (29.35) | 70 (61) |
| 7 | 1500 SUN SEP 23 | Tropical Storm Miriam | 15.6N | 109.6W | NW | 8 (7) | 996 (29.41) | 65 (56) |
| 6 | 0900 SUN SEP 23 | Tropical Storm Miriam | 15.3N | 108.8W | NW | 8 (7) | 1000 (29.53) | 50 (43) |
| 5 | 0300 SUN SEP 23 | Tropical Storm Miriam | 14.9N | 108.5W | WNW | 8 (7) | 1002 (29.59) | 45 (39) |
| 4 | 2100 SAT SEP 22 | Tropical Storm Miriam | 14.3N | 107.8W | WNW | 9 (8) | 1003 (29.62) | 40 (35) |
| 3 | 1500 SAT SEP 22 | Tropical Storm Miriam | 13.9N | 107.7W | WNW | 5 (4) | 1003 (29.62) | 40 (35) |
| 2 | 0900 SAT SEP 22 | Tropical Depression Thirteen-E | 13.7N | 107.5W | W | 7 (6) | 1004 (29.65) | 35 (30) |
| 1 | 0300 SAT SEP 22 | Tropical Depression Thirteen-E | 13.7N | 107.5W | W | 12 (10) | 1005 (29.68) | 35 (30) |