Tropical Depression Hannah (1972)
Tropical Depression Hannah peaked at 20 kt in the South Pacific between May 8, 1972 and May 12, 1972, with a lowest pressure of 970 mb, and made landfall.
Track and intensity
The whole track of Tropical Depression Hannah, colored by strength, with the other storms of the 1972 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.
The storm
- Basin
- South Pacific
- Dates
- May 8, 1972 to May 12, 1972
- Peak strength
- Tropical Depression, 20 kt (23 mph)
- Lowest pressure
- 970 mb (28.64 inHg)
- Landfall
- Yes
- Accumulated cyclone energy
- 0.0
- Identifier
- SH301972
Deaths and damage
No source this site reads publishes a machine-readable casualty or damage figure for a storm of this era. The National Hurricane Center’s season tables begin in 1995 and carry deaths and damage only from 2005 in the Atlantic and 2020 in both basins; the US Storm Events record begins in 1996.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| May 8, 00:00 | 5.8S 155.4E | 5 kt | Tropical storm | |
| May 8, 06:00 | 6.4S 154.6E | 5 kt | Tropical storm | |
| May 8, 12:00 | 6.9S 153.8E | 5 kt | Tropical storm | |
| May 8, 18:00 | 7.3S 152.9E | 5 kt | Tropical storm | |
| May 9, 00:00 | 7.4S 152.0E | 5 kt | Tropical storm | |
| May 9, 06:00 | 7.1S 151.1E | 10 kt | Tropical storm | |
| May 9, 12:00 | 6.8S 150.3E | 10 kt | Tropical storm | |
| May 9, 18:00 | 6.7S 152.7E | 10 kt | Tropical storm | |
| May 10, 00:00 | 6.9S 154.4E | 10 kt | Tropical storm | |
| May 10, 06:00 | 7.5S 154.3E | 10 kt | 970 mb | Tropical storm |
| May 10, 12:00 | 8.1S 154.2E | 15 kt | Tropical storm | |
| May 10, 18:00 | 8.5S 154.3E | 15 kt | Tropical storm | |
| May 11, 00:00 | 9.0S 154.3E | 15 kt | Tropical storm | |
| May 11, 06:00 | 9.4S 151.7E | 15 kt | Tropical storm | |
| May 11, 12:00 | 9.9S 150.2E | 15 kt | Tropical storm | |
| May 11, 18:00 | 10.3S 150.6E | 15 kt | Tropical storm | |
| May 12, 00:00 | 10.8S 150.9E | 20 kt | Tropical storm | |
| May 12, 06:00 | 11.6S 151.2E | 20 kt | Tropical storm |
Other South Pacific storms of 1972
- Unnamed tropical stormSouth Pacific · 1972
- Cyclone UrsulaSouth Pacific · 1972
- Tropical Storm KittySouth Pacific · 1972
- Tropical Storm VivienneSouth Pacific · 1972
- Cyclone AltheaSouth Pacific · 1972
- Tropical Storm BronwynSouth Pacific · 1972
- Cyclone CarlottaSouth Pacific · 1972
- Unnamed tropical stormSouth Pacific · 1972
- Cyclone WendySouth Pacific · 1972
- Cyclone DaisySouth Pacific · 1972
- Cyclone YolandeSouth Pacific · 1972
- Cyclone AgathaSouth Pacific · 1972
- Cyclone EmilySouth Pacific · 1972
- Tropical Storm FaithSouth Pacific · 1972
- Cyclone GailSouth Pacific · 1972
- Tropical Storm IdaSouth Pacific · 1972
What this means
A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.
Sources
Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.