The 1964 season

Tropical Depression Bertha:Berthe (1964)

Tropical Depression Bertha:Berthe peaked at unknown kt in the South Pacific between January 27, 1964 and February 2, 1964, with a lowest pressure of 992 mb.

Track and intensity

The whole track of Tropical Depression Bertha:Berthe, colored by strength, with the other storms of the 1964 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.

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The storm

Basin
South Pacific
Dates
January 27, 1964 to February 2, 1964
Peak strength
Tropical Depression
Lowest pressure
992 mb (29.29 inHg)
Landfall
No; closest approach 198 km (123 mi)
Accumulated cyclone energy
0.0
Identifier
SH121964

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)PositionWindPressureStatus
Jan 27, 00:0014.1S 151.4ETropical storm
Jan 27, 06:0014.2S 151.9ETropical storm
Jan 27, 12:0014.3S 152.4ETropical storm
Jan 27, 18:0014.4S 152.8ETropical storm
Jan 28, 00:0014.4S 153.3ETropical storm
Jan 28, 06:0014.6S 154.4E994 mbTropical storm
Jan 28, 12:0014.9S 155.4ETropical storm
Jan 28, 18:0015.3S 156.2ETropical storm
Jan 29, 00:0015.7S 156.9ETropical storm
Jan 29, 06:0016.0S 157.9ETropical storm
Jan 29, 12:0016.4S 158.7ETropical storm
Jan 29, 18:0016.8S 159.5ETropical storm
Jan 30, 00:0017.3S 160.1ETropical storm
Jan 30, 06:0017.7S 160.5ETropical storm
Jan 30, 12:0018.1S 160.8ETropical storm
Jan 30, 18:0018.7S 161.0ETropical storm
Jan 31, 00:0019.2S 161.3ETropical storm
Jan 31, 06:0019.6S 161.7ETropical storm
Jan 31, 12:0020.0S 162.0ETropical storm
Jan 31, 18:0020.3S 162.2ETropical storm
Feb 1, 00:0020.8S 162.2ETropical storm
Feb 1, 06:0021.9S 162.2ETropical storm
Feb 1, 12:0023.0S 162.2ETropical storm
Feb 1, 18:0024.0S 162.2ETropical storm
Feb 2, 00:0024.7S 162.4ETropical storm

Other South Pacific storms of 1964

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.