Storm Activity: Jul 17, 1974 - Jul 21, 1974
Jul 21 · 00:00 GMT 30 mph -- Tropical Depression
| Jul 21 | 00:00 GMT | 25 | -122 | 30 mph | -- | Tropical Depression | -- |
| Jul 20 | 21:00 GMT | 25.12 | -121.51 | 30 mph | -- | Tropical Depression | -- |
| Jul 20 | 18:00 GMT | 25.2 | -121 | 35 mph | -- | Tropical Depression | -- |
| Jul 20 | 15:00 GMT | 25.2 | -120.46 | 35 mph | -- | Tropical Depression | -- |
| Jul 20 | 12:00 GMT | 25 | -120 | 35 mph | -- | Tropical Depression | -- |
| Jul 20 | 09:00 GMT | 24.5 | -119.71 | 35 mph | -- | Tropical Storm | -- |
| Jul 20 | 06:00 GMT | 23.9 | -119.5 | 40 mph | -- | Tropical Storm | -- |
| Jul 20 | 03:00 GMT | 23.37 | -119.29 | 45 mph | -- | Tropical Storm | -- |
| Jul 20 | 00:00 GMT | 23 | -119 | 45 mph | -- | Tropical Storm | -- |
| Jul 19 | 21:00 GMT | 22.93 | -118.56 | 45 mph | -- | Tropical Storm | -- |
| Jul 19 | 18:00 GMT | 23 | -118 | 45 mph | -- | Tropical Storm | -- |
| Jul 19 | 15:00 GMT | 23.01 | -117.43 | 65 mph | -- | Hurricane | -- |
| Jul 19 | 12:00 GMT | 23 | -116.7 | 80 mph | -- | Hurricane | 1 |
| Jul 19 | 09:00 GMT | 22.94 | -115.7 | 80 mph | -- | Hurricane | 1 |
| Jul 19 | 06:00 GMT | 22.8 | -114.6 | 80 mph | -- | Hurricane | 1 |
| Jul 19 | 03:00 GMT | 22.65 | -113.55 | 90 mph | -- | Hurricane | 1 |
| Jul 19 | 00:00 GMT | 22.3 | -112.6 | 100 mph | -- | Hurricane | 2 |
| Jul 18 | 21:00 GMT | 21.62 | -111.73 | 75 mph | -- | Tropical Storm | 1 |
| Jul 18 | 18:00 GMT | 20.7 | -111.2 | 60 mph | -- | Tropical Storm | -- |
| Jul 18 | 15:00 GMT | 19.59 | -111.15 | 45 mph | -- | Tropical Depression | -- |
| Jul 18 | 12:00 GMT | 18.6 | -111.4 | 35 mph | -- | Tropical Depression | -- |
| Jul 18 | 09:00 GMT | 18.1 | -111.66 | 35 mph | -- | Tropical Depression | -- |
| Jul 18 | 06:00 GMT | 17.8 | -112 | 35 mph | -- | Tropical Depression | -- |
| Jul 18 | 03:00 GMT | 17.39 | -112.35 | 35 mph | -- | Tropical Depression | -- |
| Jul 18 | 00:00 GMT | 17 | -112.7 | 35 mph | -- | Tropical Depression | -- |
| Jul 17 | 21:00 GMT | 16.64 | -113 | 35 mph | -- | Tropical Depression | -- |
| Jul 17 | 18:00 GMT | 16.3 | -113.3 | 35 mph | -- | Tropical Depression | -- |
| Jul 17 | 15:00 GMT | 15.95 | -113.64 | 35 mph | -- | Tropical Depression | -- |
| Jul 17 | 12:00 GMT | 15.6 | -114 | 35 mph | -- | Tropical Depression | -- |
| Jul 17 | 09:00 GMT | 15.24 | -114.39 | 35 mph | -- | Tropical Depression | -- |
| Jul 17 | 06:00 GMT | 14.9 | -114.8 | 35 mph | -- | Tropical Depression | -- |
| Jul 17 | 03:00 GMT | 14.59 | -115.24 | 35 mph | -- | Tropical Depression | -- |
| Jul 17 | 00:00 GMT | 14.3 | -115.7 | 35 mph | -- | Tropical Depression | -- |
Learn more about Hurricane Gretchen and the 1974 Eastern Pacific hurricane season in our hurricane archive.
View All Hurricanes and Tropical Cyclones