The 1964 season

Tropical Storm Lorna (1964)

Tropical Storm Lorna peaked at 35 kt in the Western Pacific between August 11, 1964 and August 14, 1964, with a lowest pressure of 1002 mb.

Track and intensity

The whole track of Tropical Storm Lorna, 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.

Open the live map with storms, cones and warnings

The storm

Basin
Western Pacific
Dates
August 11, 1964 to August 14, 1964
Peak strength
Tropical Storm, 35 kt (40 mph)
Lowest pressure
1002 mb (29.59 inHg)
Landfall
No; closest approach 1329 km (826 mi)
Accumulated cyclone energy
0.4
Identifier
WP141964

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
Aug 11, 12:0015.7N 139.4E1002 mbMixed
Aug 11, 18:0016.3N 140.5E1002 mbTropical storm
Aug 12, 00:0017.2N 142.0E25 kt1002 mbTropical storm
Aug 12, 06:0017.8N 142.4E35 kt1002 mbTropical storm
Aug 12, 12:0018.6N 142.8E35 kt1002 mbTropical storm
Aug 12, 18:0019.3N 143.1E35 kt1002 mbTropical storm
Aug 13, 00:0020.1N 143.3E20 kt1004 mbTropical storm
Aug 13, 06:0021.5N 143.4E1004 mbTropical storm
Aug 13, 12:0021.6N 144.5E1004 mbTropical storm
Aug 13, 18:0022.0N 145.4E1006 mbTropical storm
Aug 14, 00:0022.8N 145.5E1006 mbTropical storm
Aug 14, 06:0023.8N 144.9E1008 mbTropical storm

Other Western 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.