Storm Activity: Oct 4, 1977 - Oct 7, 1977
Oct 7 · 12:00 GMT 30 mph -- Tropical Depression
| Oct 7 | 12:00 GMT | 27.9 | -116.4 | 30 mph | -- | Tropical Depression | -- |
| Oct 7 | 09:00 GMT | 27.47 | -116.61 | 35 mph | -- | Tropical Storm | -- |
| Oct 7 | 06:00 GMT | 27 | -116.8 | 40 mph | -- | Tropical Storm | -- |
| Oct 7 | 03:00 GMT | 26.47 | -116.95 | 45 mph | -- | Tropical Storm | -- |
| Oct 7 | 00:00 GMT | 25.9 | -117 | 50 mph | -- | Tropical Storm | -- |
| Oct 6 | 21:00 GMT | 25.35 | -116.99 | 50 mph | -- | Tropical Storm | -- |
| Oct 6 | 18:00 GMT | 24.8 | -116.8 | 50 mph | -- | Tropical Storm | -- |
| Oct 6 | 15:00 GMT | 24.27 | -116.36 | 65 mph | -- | Hurricane | -- |
| Oct 6 | 12:00 GMT | 23.7 | -115.8 | 75 mph | -- | Hurricane | 1 |
| Oct 6 | 09:00 GMT | 23.08 | -115.26 | 75 mph | -- | Hurricane | 1 |
| Oct 6 | 06:00 GMT | 22.4 | -114.8 | 75 mph | -- | Hurricane | 1 |
| Oct 6 | 03:00 GMT | 21.58 | -114.5 | 75 mph | -- | Hurricane | 1 |
| Oct 6 | 00:00 GMT | 20.9 | -114.3 | 75 mph | -- | Hurricane | 1 |
| Oct 5 | 21:00 GMT | 20.62 | -114.17 | 80 mph | -- | Hurricane | 1 |
| Oct 5 | 18:00 GMT | 20.5 | -114 | 85 mph | -- | Hurricane | 1 |
| Oct 5 | 15:00 GMT | 20.31 | -113.66 | 85 mph | -- | Hurricane | 1 |
| Oct 5 | 12:00 GMT | 20 | -113.2 | 85 mph | -- | Hurricane | 1 |
| Oct 5 | 09:00 GMT | 19.43 | -112.66 | 80 mph | -- | Hurricane | 1 |
| Oct 5 | 06:00 GMT | 18.8 | -112.1 | 75 mph | -- | Hurricane | 1 |
| Oct 5 | 03:00 GMT | 18.33 | -111.6 | 70 mph | -- | Tropical Storm | -- |
| Oct 5 | 00:00 GMT | 17.9 | -111.1 | 65 mph | -- | Tropical Storm | -- |
| Oct 4 | 21:00 GMT | 17.43 | -110.54 | 60 mph | -- | Tropical Storm | -- |
| Oct 4 | 18:00 GMT | 17 | -110 | 50 mph | -- | Tropical Storm | -- |
| Oct 4 | 15:00 GMT | 16.68 | -109.54 | 45 mph | -- | Tropical Storm | -- |
| Oct 4 | 12:00 GMT | 16.4 | -109.1 | 40 mph | -- | Tropical Storm | -- |
| Oct 4 | 09:00 GMT | 16.09 | -108.66 | 40 mph | -- | Tropical Storm | -- |
| Oct 4 | 06:00 GMT | 15.8 | -108.2 | 40 mph | -- | Tropical Storm | -- |
| Oct 4 | 03:00 GMT | 15.54 | -107.71 | 35 mph | -- | Tropical Depression | -- |
| Oct 4 | 00:00 GMT | 15.3 | -107.2 | 35 mph | -- | Tropical Depression | -- |
Learn more about Hurricane Heather and the 1977 Eastern Pacific hurricane season in our hurricane archive.
View All Hurricanes and Tropical Cyclones