Storm Activity: Aug 10, 1974 - Aug 13, 1974
Aug 13 · 12:00 GMT 30 mph -- Tropical Depression
| Aug 13 | 12:00 GMT | 16 | -124 | 30 mph | -- | Tropical Depression | -- |
| Aug 13 | 09:00 GMT | 16.06 | -123.54 | 30 mph | -- | Tropical Depression | -- |
| Aug 13 | 06:00 GMT | 16.1 | -123.1 | 30 mph | -- | Tropical Depression | -- |
| Aug 13 | 03:00 GMT | 16.12 | -122.69 | 30 mph | -- | Tropical Depression | -- |
| Aug 13 | 00:00 GMT | 16.1 | -122.3 | 30 mph | -- | Tropical Depression | -- |
| Aug 12 | 21:00 GMT | 16.02 | -121.89 | 30 mph | -- | Tropical Depression | -- |
| Aug 12 | 18:00 GMT | 15.9 | -121.5 | 35 mph | -- | Tropical Depression | -- |
| Aug 12 | 15:00 GMT | 15.81 | -121.15 | 35 mph | -- | Tropical Storm | -- |
| Aug 12 | 12:00 GMT | 15.7 | -120.8 | 40 mph | -- | Tropical Storm | -- |
| Aug 12 | 09:00 GMT | 15.56 | -120.4 | 40 mph | -- | Tropical Storm | -- |
| Aug 12 | 06:00 GMT | 15.4 | -120 | 40 mph | -- | Tropical Storm | -- |
| Aug 12 | 03:00 GMT | 15.23 | -119.66 | 45 mph | -- | Tropical Storm | -- |
| Aug 12 | 00:00 GMT | 15.1 | -119.3 | 45 mph | -- | Tropical Storm | -- |
| Aug 11 | 21:00 GMT | 15.03 | -118.87 | 45 mph | -- | Tropical Storm | -- |
| Aug 11 | 18:00 GMT | 15 | -118.4 | 45 mph | -- | Tropical Storm | -- |
| Aug 11 | 15:00 GMT | 14.96 | -117.91 | 45 mph | -- | Tropical Storm | -- |
| Aug 11 | 12:00 GMT | 14.9 | -117.4 | 40 mph | -- | Tropical Storm | -- |
| Aug 11 | 09:00 GMT | 14.81 | -116.91 | 40 mph | -- | Tropical Storm | -- |
| Aug 11 | 06:00 GMT | 14.7 | -116.4 | 40 mph | -- | Tropical Storm | -- |
| Aug 11 | 03:00 GMT | 14.6 | -115.86 | 40 mph | -- | Tropical Storm | -- |
| Aug 11 | 00:00 GMT | 14.5 | -115.3 | 40 mph | -- | Tropical Storm | -- |
| Aug 10 | 21:00 GMT | 14.41 | -114.76 | 40 mph | -- | Tropical Storm | -- |
| Aug 10 | 18:00 GMT | 14.3 | -114.2 | 40 mph | -- | Tropical Storm | -- |
| Aug 10 | 15:00 GMT | 14.16 | -113.65 | 35 mph | -- | Tropical Depression | -- |
| Aug 10 | 12:00 GMT | 14 | -113 | 30 mph | -- | Tropical Depression | -- |
| Aug 10 | 09:00 GMT | 13.82 | -112.23 | 30 mph | -- | Tropical Depression | -- |
| Aug 10 | 06:00 GMT | 13.6 | -111.3 | 30 mph | -- | Tropical Depression | -- |
| Aug 10 | 03:00 GMT | 13.32 | -110.24 | 30 mph | -- | Tropical Depression | -- |
| Aug 10 | 00:00 GMT | 13 | -109.1 | 30 mph | -- | Tropical Depression | -- |
Learn more about Tropical Storm Helga and the 1974 Eastern Pacific hurricane season in our hurricane archive.
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