The 1971 season

Hurricane Irene:Olivia (1971)

Hurricane Irene:Olivia reached Category 3 in the North Atlantic between September 11, 1971 and October 1, 1971, with a lowest pressure of 948 mb, and made landfall. It did $1.0 million of damage.

Track and intensity

The whole track of Hurricane Irene:Olivia, colored by strength, with the other storms of the 1971 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
North Atlantic
Dates
September 11, 1971 to October 1, 1971
Peak strength
Category 3, 100 kt (115 mph)
Lowest pressure
948 mb (27.99 inHg)
Landfall
Yes
Accumulated cyclone energy
23.5
Fastest the center moved
19 kt (22 mph)
Identifier
AL181971

Deaths and damage

The sources count different things and are not added together.

Wikidata

no death figure$1.0 million

A community-maintained total, usually direct and indirect deaths together and damage worldwide. Joined to this storm by its IBTrACS serial, not by name.

Track

Time (UTC)PositionWindPressureStatus
Sep 11, 18:0011.0N 48.5W25 kt1009 mbTropical depression
Sep 12, 00:0011.3N 50.3W25 ktTropical depression
Sep 12, 06:0011.8N 52.2W25 ktTropical depression
Sep 12, 12:0012.1N 53.8W25 kt1009 mbTropical depression
Sep 12, 18:0012.5N 55.0W25 ktTropical depression
Sep 13, 00:0012.5N 56.5W25 ktTropical depression
Sep 13, 06:0012.5N 57.8W25 ktTropical depression
Sep 13, 12:0012.5N 59.0W25 ktTropical depression
Sep 13, 18:0012.3N 59.8W25 ktTropical depression
Sep 14, 00:0012.2N 60.3W25 ktTropical depression
Sep 14, 06:0012.1N 60.8W25 ktTropical depression
Sep 14, 12:0012.0N 61.4W25 kt1007 mbTropical depression
Sep 14, 18:0011.9N 62.1W25 ktTropical depression
Sep 15, 00:0011.7N 63.0W30 ktTropical depression
Sep 15, 06:0011.5N 64.0W30 ktTropical depression
Sep 15, 12:0011.4N 65.0W30 ktTropical depression
Sep 15, 18:0011.5N 66.2W30 ktTropical depression
Sep 16, 00:0011.9N 67.5W30 ktTropical depression
Sep 16, 06:0012.2N 69.0W30 ktTropical depression
Sep 16, 12:0012.5N 70.5W30 ktTropical depression
Sep 16, 18:0012.6N 71.7W30 ktTropical depression
Sep 17, 00:0012.5N 73.0W35 ktTropical storm
Sep 17, 06:0012.4N 74.5W35 ktTropical storm
Sep 17, 12:0012.3N 76.0W40 kt1005 mbTropical storm
Sep 17, 18:0012.1N 77.5W45 ktTropical storm
Sep 18, 00:0012.0N 79.0W50 ktTropical storm
Sep 18, 06:0011.7N 80.5W55 kt1002 mbTropical storm
Sep 18, 12:0011.5N 81.5W60 kt998 mbTropical storm
Sep 18, 18:0011.4N 82.3W70 kt993 mbHurricane
Sep 19, 00:0011.3N 82.9W65 kt989 mbHurricane
Sep 19, 06:0011.4N 83.5W65 ktHurricane
Sep 19, 12:0011.5N 84.3W60 ktTropical storm
Sep 19, 18:0011.7N 85.0W50 ktTropical storm
Sep 20, 00:0011.9N 85.8W30 ktTropical depression
Sep 20, 06:0012.2N 86.5W30 ktTropical depression
Sep 20, 12:0012.3N 87.2W35 ktTropical storm
Sep 20, 18:0012.5N 87.9W35 ktTropical storm
Sep 21, 00:0012.5N 88.6W45 ktTropical storm
Sep 21, 06:0012.7N 89.4W50 ktTropical storm
Sep 21, 12:0012.8N 90.2W50 ktTropical storm
Sep 21, 18:0013.0N 90.9W50 kt990 mbTropical storm
Sep 22, 00:0013.2N 91.6W70 ktHurricane
Sep 22, 06:0013.4N 92.3W70 ktHurricane
Sep 22, 12:0013.5N 93.1W70 ktHurricane
Sep 22, 18:0013.6N 94.1W70 kt983 mbHurricane
Sep 23, 00:0013.6N 95.2W70 ktHurricane
Sep 23, 06:0013.6N 96.2W70 ktHurricane
Sep 23, 12:0013.6N 97.1W80 kt980 mbHurricane
Sep 23, 18:0013.6N 97.9W80 ktHurricane
Sep 24, 00:0013.7N 98.9W80 ktHurricane
Sep 24, 06:0013.9N 100.2W80 ktHurricane
Sep 24, 12:0014.2N 101.5W80 ktHurricane
Sep 24, 18:0014.6N 102.8W80 ktHurricane
Sep 25, 00:0015.1N 104.1W80 kt974 mbHurricane
Sep 25, 06:0015.8N 105.4W80 ktHurricane
Sep 25, 12:0016.5N 106.5W80 ktHurricane
Sep 25, 18:0017.3N 107.2W100 ktHurricane
Sep 26, 00:0018.1N 108.0W90 ktHurricane
Sep 26, 06:0018.8N 108.7W90 ktHurricane
Sep 26, 12:0019.3N 109.5W90 ktHurricane
Sep 26, 18:0019.6N 109.9W100 kt948 mbHurricane
Sep 27, 00:0019.7N 110.2W90 ktHurricane
Sep 27, 06:0019.8N 110.7W90 ktHurricane
Sep 27, 12:0019.9N 111.3W85 ktHurricane
Sep 27, 18:0019.9N 112.0W85 ktHurricane
Sep 28, 00:0019.9N 112.6W80 kt963 mbHurricane
Sep 28, 06:0020.1N 113.0W80 ktHurricane
Sep 28, 12:0020.5N 113.4W75 ktHurricane
Sep 28, 18:0021.2N 113.9W50 ktTropical storm
Sep 29, 00:0022.0N 114.4W45 ktTropical storm
Sep 29, 06:0023.0N 114.6W40 ktTropical storm
Sep 29, 12:0023.9N 114.5W40 ktTropical storm
Sep 29, 18:0024.8N 114.2W25 ktTropical depression
Sep 30, 00:0025.6N 114.0W25 ktTropical depression
Sep 30, 06:0026.5N 113.7W25 ktTropical depression
Sep 30, 12:0027.4N 113.5W25 ktTropical depression
Sep 30, 18:0027.9N 113.2W25 ktTropical depression
Oct 1, 00:0028.0N 113.0W25 ktTropical depression

Other North Atlantic storms of 1971

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.

The National Hurricane Center has published no tropical cyclone report for this storm.