Tropical Storm Lionrock (2021)

Tropical Storm Lionrock peaked at 45 kt in the Western Pacific between October 2, 2021 and October 10, 2021, with a lowest pressure of 989 mb, and made landfall.

Track and intensity

The whole track of Tropical Storm Lionrock, colored by strength, with the other storms of the 2021 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 2, 2021 to October 10, 2021
Peak strength: Tropical Storm, 45 kt (52 mph)
Lowest pressure: 989 mb (29.21 inHg)
Landfall: Yes
Accumulated cyclone energy: 0.9
Tropical-storm-force wind reached: 60 nmi (111 km, 69 mi) from the center at its widest
Eyewall radius at its peak: 40 nmi (74 km, 46 mi)
Overall size: 255 nmi (472 km, 293 mi) to the outermost closed isobar
Fastest the center moved: 24 kt (28 mph)
Identifier: WP222021

Deaths and damage

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

Track

Time (UTC)	Position	Wind	Pressure	Status
Oct 2, 18:00	6.9N 130.8E	20 kt	1005 mb	Disturbance
Oct 3, 00:00	7.4N 129.6E	20 kt	1005 mb	Disturbance
Oct 3, 06:00	8.2N 128.1E	20 kt	1005 mb	Disturbance
Oct 3, 12:00	8.9N 127.5E	20 kt	1005 mb	Disturbance
Oct 3, 18:00	9.5N 126.3E	20 kt	1006 mb	Disturbance
Oct 4, 00:00	10.0N 125.0E	15 kt	1010 mb	Disturbance
Oct 4, 06:00	9.8N 122.6E	15 kt	1010 mb	Disturbance
Oct 4, 12:00	9.8N 121.4E	10 kt	1010 mb	Disturbance
Oct 4, 18:00	10.7N 120.6E	15 kt	1012 mb	Disturbance
Oct 5, 00:00	11.8N 119.2E	15 kt	1012 mb	Disturbance
Oct 5, 06:00	12.3N 118.5E	20 kt	1004 mb	Disturbance
Oct 5, 12:00	12.8N 117.1E	20 kt	1004 mb	Disturbance
Oct 5, 18:00	13.7N 115.5E	20 kt	1006 mb	Disturbance
Oct 6, 00:00	14.4N 114.1E	20 kt	999 mb	Disturbance
Oct 6, 06:00	15.0N 113.3E	20 kt	1004 mb	Disturbance
Oct 6, 12:00	15.7N 112.4E	20 kt	999 mb	Disturbance
Oct 6, 18:00	16.0N 112.1E	20 kt	999 mb	MD
Oct 7, 00:00	16.3N 111.9E	25 kt	1000 mb	Tropical depression
Oct 7, 06:00	16.6N 111.5E	30 kt	998 mb	Tropical depression
Oct 7, 12:00	16.9N 111.1E	25 kt	997 mb	Tropical depression
Oct 7, 18:00	17.4N 111.1E	30 kt	996 mb	Tropical depression
Oct 8, 00:00	18.0N 111.1E	30 kt	996 mb	Tropical depression
Oct 8, 06:00	18.5N 110.7E	35 kt	993 mb	Tropical storm
Oct 8, 12:00	18.9N 110.5E	45 kt	989 mb	Tropical storm
Oct 8, 18:00	19.3N 110.0E	35 kt	994 mb	Tropical storm
Oct 9, 00:00	19.7N 109.5E	30 kt	997 mb	Tropical depression
Oct 9, 06:00	20.0N 109.4E	35 kt	993 mb	Tropical storm
Oct 9, 12:00	20.1N 109.0E	35 kt	993 mb	Tropical storm
Oct 9, 18:00	20.2N 108.6E	35 kt	996 mb	Tropical storm
Oct 10, 00:00	20.5N 107.8E	35 kt	996 mb	Tropical storm
Oct 10, 06:00	20.7N 106.9E	30 kt	1002 mb	Tropical depression
Oct 10, 12:00	20.8N 106.3E	20 kt	1002 mb	Disturbance
Oct 10, 18:00	20.2N 105.5E		1004 mb	Tropical storm

Other Western Pacific storms of 2021

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.

Wikipedia article: Tropical Storm Lionrock