User:Meow/List of typhoon-equivalent extratropical cyclones

Systems

See also: /2000s and /2010s

2020–21

It was a very active season, including a 924 hPa cyclone. The last system of this system is former Typhoon Surigae, with the lowest central pressure of former tropical cyclones among the whole lists of this page.

• 
  14 December
• 
  29 December
• 
  1 January
• 
  20 January
• 
  27 January
• 
  5 February
• 
  16 February
• 
  1 March
• 
  27 April

TY-equivalent period	Sustained windspeeds	Pressure	Land areas affected	Deaths	Refs
2020-12-04T18Z	120 km/h (75 mph)	966 hPa (28.53 inHg)	None	None
2020-12-13T18Z	120 km/h (75 mph)	962 hPa (28.41 inHg)	Russian Far East, Aleutian Islands	None
2020-12-29T18Z	130 km/h (80 mph)	972 hPa (28.70 inHg)	None	None
2020-12-31T06Z – 2020-12-31T18Z	120 km/h (75 mph)	924 hPa (27.29 inHg)	Japan, Russian Far East, Aleutian Islands	None
2021-01-20T06Z – 2021-01-20T18Z	120 km/h (75 mph)	968 hPa (28.59 inHg)	Japan, Aleutian Islands	None
2021-01-26T06Z – 2021-01-26T18Z	120 km/h (75 mph)	940 hPa (27.76 inHg)	Japan, Aleutian Islands, Russian Far East	None
2021-02-05T00Z	120 km/h (75 mph)	976 hPa (28.82 inHg)	Japan	None
2021-02-15T18Z	130 km/h (80 mph)	946 hPa (27.94 inHg)	Japan, Russian Far East	None
2021-02-28T18Z – 2021-03-01T00Z	120 km/h (75 mph)	946 hPa (27.94 inHg)	Japan, Russian Far East, Aleutian Islands	None
2021-04-26T18Z	130 km/h (80 mph)	944 hPa (27.88 inHg)	Russian Far East	None
Aggregates
10 systems	130 km/h (80 mph)	924 hPa (27.29 inHg)		0

2021–22

It was an average period with the strongest June system since 2012.

• 
  15 February
• 
  30 April
• 
  12 June

TY-equivalent period	Sustained windspeeds	Pressure	Land areas affected	Deaths	Refs
2021-10-29T12Z	120 km/h (75 mph)	974 hPa (28.76 inHg)	None	None
2021-12-13T06Z	120 km/h (75 mph)	962 hPa (28.41 inHg)	Russian Far East	None
2022-02-15T12Z – 2022-02-15T18Z	120 km/h (75 mph)	960 hPa (28.35 inHg)	Japan, Aleutian Islands	None
2022-04-30T00Z – 2022-04-30T12Z	130 km/h (80 mph)	962 hPa (28.41 inHg)	East China, Japan, Aleutian Islands	None
2022-06-12T18Z	120 km/h (75 mph)	972 hPa (28.70 inHg)	East China, Japan	None
Aggregates
5 systems	130 km/h (80 mph)	960 hPa (28.35 inHg)		0

2022–23

• 
  15 September
• 
  29 September
• 
  28 November
• 
  25 January

TY-equivalent period	Sustained windspeeds	Pressure	Land areas affected	Deaths	Refs
2022-09-15T06Z – 2022-09-16T12Z	130 km/h (80 mph)	940 hPa (27.76 inHg)	Aleutian Islands	None
2022-09-29T06Z – 2022-09-30T12Z	120 km/h (75 mph)	940 hPa (27.76 inHg)	Aleutian Islands	None
2022-11-28T12Z – 2022-11-29T12Z	130 km/h (80 mph)	960 hPa (28.35 inHg)	Ryukyu Islands	None
2023-01-25T00Z – 2023-01-25T06Z	120 km/h (75 mph)	938 hPa (27.70 inHg)	Japan, Kuril Islands, Kamchatka Peninsula	None
2023-01-28T18Z – 2023-01-29T00Z	120 km/h (75 mph)	950 hPa (28.05 inHg)	Japan, Russian Far East	None
Aggregates
5 systems	130 km/h (80 mph)	938 hPa (27.70 inHg)		0

2023–24

• 
  14 October

TY-equivalent period	Sustained windspeeds	Pressure	Land areas affected	Deaths	Refs
2023-10-14T12Z – 2023-10-15T06Z	130 km/h (80 mph)	950 hPa (28.05 inHg)	Aleutian Islands	None
Aggregates
1 system	130 km/h (80 mph)	950 hPa (28.05 inHg)		0

Statistics

From July 2001 to June 2024, the Japan Meteorological Agency reported 115 extratropical cyclones with typhoon-equivalent (10-minute) maximum sustained winds in the Northwest Pacific Ocean. There was an average of 5 systems reaching that intensity each period.

Winds

About three fourths of typhoon-equivalent extratropical cyclones were at 65 knots. Approximately one 70-knot system formed each period. Systems at or over 75 knots were extremely rare.

Pressure

Unlike tropical cyclones, the central pressure of typhoon-equivalent extratropical cyclones at the same or similar intensity could vary significantly, although more than a half of total systems were between 950 to 970 hPa. The highest one was 988 hPa recorded in December 2012, while the lowest one was 920 hPa recorded in November 2014.

Months

More than a half of total systems formed between December and February. Lots of September and October systems were originally tropical. No typhoon-equivalent systems were recorded in May, July and August.