The 2020 season

Tropical Storm Atsani (2020)

Tropical Storm Atsani peaked at 50 kt in the Western Pacific between October 29, 2020 and November 7, 2020, with a lowest pressure of 993 mb.

Track and intensity

The whole track of Tropical Storm Atsani, colored by strength, with the other storms of the 2020 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
Western Pacific
Dates
October 29, 2020 to November 7, 2020
Peak strength
Tropical Storm, 50 kt (58 mph)
Lowest pressure
993 mb (29.32 inHg)
Landfall
No; closest approach 35 km (22 mi)
Accumulated cyclone energy
3.7
Identifier
WP232020

Deaths and damage

No source this site reads carries a casualty or damage figure for this storm.

Track

Time (UTC)PositionWindPressureStatus
Oct 29, 00:005.3N 149.3ETropical storm
Oct 29, 06:006.7N 149.1ETropical storm
Oct 29, 12:008.2N 148.5EMixed
Oct 29, 18:009.3N 147.4EMixed
Oct 30, 00:0010.4N 145.5EMixed
Oct 30, 06:0010.9N 143.5ETropical storm
Oct 30, 12:0011.6N 142.0E1004 mbTropical storm
Oct 30, 18:0012.3N 141.0E1002 mbTropical storm
Oct 31, 00:0013.3N 139.9E1004 mbTropical storm
Oct 31, 06:0014.0N 138.6E1002 mbTropical storm
Oct 31, 12:0014.7N 137.1E25 kt1006 mbTropical depression
Oct 31, 18:0015.3N 135.9E30 kt1004 mbTropical depression
Nov 1, 00:0015.7N 134.3E25 kt1006 mbTropical depression
Nov 1, 06:0016.1N 132.8E25 kt1006 mbTropical depression
Nov 1, 12:0016.9N 131.6E30 kt1004 mbTropical depression
Nov 1, 18:0017.9N 130.1E30 kt1005 mbTropical depression
Nov 2, 00:0018.9N 128.7E30 kt1005 mbTropical depression
Nov 2, 06:0019.6N 127.4E30 kt1005 mbTropical depression
Nov 2, 12:0019.8N 127.0E35 kt1002 mbTropical storm
Nov 2, 18:0020.0N 127.3E35 kt1004 mbTropical storm
Nov 3, 00:0020.1N 127.9E35 kt1004 mbTropical storm
Nov 3, 06:0020.0N 128.4E35 kt1003 mbTropical storm
Nov 3, 12:0019.9N 128.9E35 kt1005 mbTropical storm
Nov 3, 18:0020.0N 129.3E35 kt1003 mbTropical storm
Nov 4, 00:0020.2N 129.5E40 kt998 mbTropical storm
Nov 4, 06:0020.3N 129.1E45 kt993 mbTropical storm
Nov 4, 12:0020.2N 128.7E50 kt993 mbTropical storm
Nov 4, 18:0020.4N 127.6E50 kt994 mbTropical storm
Nov 5, 00:0020.3N 126.5E50 kt997 mbTropical storm
Nov 5, 06:0020.3N 125.7E50 kt998 mbTropical storm
Nov 5, 12:0020.5N 124.2E50 kt1000 mbTropical storm
Nov 5, 18:0020.6N 122.7E45 kt1003 mbTropical storm
Nov 6, 00:0020.9N 121.8E50 kt1002 mbTropical storm
Nov 6, 06:0021.4N 120.9E45 kt1003 mbTropical storm
Nov 6, 12:0021.9N 120.3E50 kt1001 mbTropical storm
Nov 6, 18:0022.3N 119.8E50 kt1001 mbTropical storm
Nov 7, 00:0022.7N 119.4E40 kt1005 mbTropical storm
Nov 7, 06:0022.7N 119.1E30 kt1011 mbTropical depression
Nov 7, 12:0022.7N 118.6EMixed

Other Western Pacific storms of 2020

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.