Note: This report catalogs recent tropical cyclones across the North Atlantic and East Pacific and places each basin’s tropical cyclone activity in a climate-scale context. It is not updated in real time. Users seeking the real time status and forecasts of tropical cyclones should visit The National Hurricane Center.

Summary

A total of 94 tropical cyclones formed around the globe in 2021, which ties 1994 for the tenth most since 1981. Despite this above-normal number of named storms, the overall global tropical cyclone activity was down in 2021. Only 37 tropical cyclones made hurricane strength (>74 mph), which is the fewest on record since 1981. The previous record was 38 in 2009. In addition, 16 storms reached major hurricane strength (>111 mph), which tied 1986 for the third fewest. Six storms reached category 5 strength (>157 mph) on the Saffir-Simpson Hurricane Wind Scale (SSHWS), which is slightly above the normal. The global accumulated cyclone energy (ACE: an integrated metric of the strength, frequency, and duration of tropical storms) was about 22% below the 1991-2020 average.

Similar to 2020, the North Atlantic played an out-sized role in the global tropical cyclone activity in 2021. The 21 named storms were the third most on record. The seven hurricanes were near normal and the four major hurricanes were above normal. The ACE was also about 20% above the 1991-2020 average.

Eight tropical cyclones made landfall in the contiguous U.S. in 2021, down from eleven in 2020. Four of those storms were billion dollar disasters: Tropical Storm Elsa, Tropical Storm Fred, Hurricane Ida, and Hurricane Nicholas. At $75 billion in damage, Ida was the costliest disaster of 2021 and the fifth most expensive hurricane on record (since 1980). Ida's destruction was unique in that its damage was concentrated in two distinct regions. It made landfall as a powerful category-4 storm in Louisiana causing heavy damage to the Gulf Coast. As its remnants moved northward, it merged with a frontal system to produce severe weather and flash flooding from Pennsylvania to New York.

Both the eastern and western North Pacific basins were generally less active than normal. In the East Pacific, the 19 named storms and eight hurricanes were both near normal. However, only two storms became major hurricanes, which is less than half of normal. The ACE was also about 30% below normal. Similarly, the 23 named storms in the West Pacific was near normal, but the ten typhoons and five typhoons were both among the five lowest years since 1981. The ACE was also about 30% below normal in the West Pacific.

Despite the overall lack of activity in the West Pacific in 2021, the basin produced four of the six category-5 storms observed globally: Surigae, Chanthu, Mindulle, and Rai. Super Typhoon Rai was the most impactful of these as it made landfall in the Philippines shortly after rapidly intensifying to category 5 strength.

The other tropical cyclone basins were generally near normal in 2021. In the North Indian Ocean, the strongest cyclone was Tauktae, which passed just west of Mumbai as a category-4 cyclone. The tropical cyclone seasons in the Southern Hemisphere basins begin in July and end in June, so the seasons summarized here are the 2020/21 seasons that ended in June 2021. It is also more common for storms to cross basins in the Southern Hemisphere, so some storms are counted in multiple basins. Two category-5 tropical cyclones formed in the Southern Hemisphere during 2021: Faraji and Niran. A third category 5 storm, Yasa happened in December 2020, which is also part of the 2020-2021 Southern Hemisphere season. This ties four other years (2003, 2005, 2014, and 2015) for the most category 5 storms in a Southern Hemisphere season.

North Atlantic

2021 North Atlantic Tropical Cyclones
Name Maximum
Category
Max
Cat
Dates
>39 mph
Maximum Sustained Winds Minimum Central Pressure
Ana Storm Track
TSMay 22May 22-2345 mph1006 mb
Bill Storm Track
TSJune 14Jun 14-1560 mph998 mb
Claudette Storm Track
TSJune 19Jun 19-2245 mph1004 mb
Danny Storm Track
TSJune 28Jun 28-2940 mph1011 mb
Elsa Storm Track
1July 1Jul 1-985 mph991 mb
Fred Storm Track
TSAugust 11Aug 11-1765 mph993 mb
Grace Storm Track
3August 14Aug 14-21125 mph962 mb
Henri Storm Track
1August 16Aug 16-2275 mph986 mb
Julian Storm Track
TSAugust 24Aug 24-2960 mph995 mb
Ida Storm Track
4August 26Aug 26-30150 mph929 mb
Kate Storm Track
TSAugust 30Aug 30-3145 mph1004 mb
Larry Storm Track
3September 1Sep 1-11125 mph955 mb
Mindy Storm Track
TSSeptember 8Sep 8-945 mph1004 mb
Nicholas Storm Track
1September 12Sep 12-1475 mph989 mb
Odette Storm Track
TSSeptember 17Sep 17-1845 mph1001 mb
Peter Storm Track
TSSeptember 19Sep 19-2150 mph1005 mb
Rose Storm Track
TSSeptember 19Sep 19-2250 mph1004 mb
Sam Storm Track
4September 23-October 5Sep 23-Oct 5155 mph929 mb
Teresa Storm Track
TSSeptember 24Sep 24-2545 mph1008 mb
Victor Storm Track
TSSeptember 29-October 2Sep 29-Oct 265 mph997 mb
Wanda Storm Track
TSOctober 31-November 7Oct 31-Nov 750 mph987 mb
North Atlantic Tropical Cyclone Season Counts January-December 2021
Storm Type Count 1991-2020
Mean
1981-2021
Rank*
1851-2021
Record
Tropical Storm
Winds ≥ 39 mph (34 kts)
2114.53rd30
(2020)
Hurricane
Winds ≥ 74 mph (64 kts)
77.216th
(tied with 6 other seasons)
15
(2005)
Major Hurricane
Winds ≥ 111 mph (96 kts)
43.210th
(tied with 3 other seasons)
7
(2005, 2020)
Accumulated Cyclone Energy
ACE×10⁴ kt²
145.7122.812th258.6
(1933)
North Atlantic Tropical Cyclone Storm Tracks January-December 2021

East Pacific

2021 East Pacific Tropical Cyclones
Name Maximum
Category
Max
Cat
Dates
>39 mph
Maximum Sustained Winds Minimum Central Pressure
Andres Storm Track
TSMay 9May 9-1040 mph1005 mb
Blanca Storm Track
TSMay 31-June 2May 31-Jun 260 mph998 mb
Carlos Storm Track
TSJune 13Jun 13-1450 mph1000 mb
Dolores Storm Track
TSJune 18Jun 18-1970 mph990 mb
Enrique Storm Track
1June 25Jun 25-3090 mph975 mb
Felicia Storm Track
4July 14Jul 14-20145 mph947 mb
Guillermo Storm Track
TSJuly 17Jul 17-1960 mph999 mb
Hilda Storm Track
1July 30-August 5Jul 30-Aug 585 mph985 mb
Ignacio Storm Track
TSAugust 2Aug 2-340 mph1004 mb
Jimena Storm Track
TSAugust 5Aug 5-640 mph1005 mb
Kevin Storm Track
TSAugust 7Aug 7-1260 mph999 mb
Linda Storm Track
4August 10Aug 10-20130 mph950 mb
Marty Storm Track
TSAugust 23Aug 23-2445 mph1002 mb
Nora Storm Track
1August 26Aug 26-3085 mph977 mb
Olaf Storm Track
1September 8Sep 8-1190 mph977 mb
Pamela Storm Track
1October 10Oct 10-1380 mph985 mb
Rick Storm Track
2October 22Oct 22-25105 mph977 mb
Terry Storm Track
TSNovember 7Nov 7-840 mph1006 mb
Sandra Storm Track
TSNovember 7Nov 7-840 mph1006 mb
East Pacific Tropical Cyclone Season Counts January-December 2021
Storm Type Count 1991-2020
Mean
1981-2021
Rank*
1949-2021
Record
Tropical Storm
Winds ≥ 39 mph (34 kts)
1916.916th
(tied with 3 other seasons)
27
(1992)
Hurricane
Winds ≥ 74 mph (64 kts)
88.824th
(tied with 4 other seasons)
16
(1990, 1992, 2014, 2015)
Major Hurricane
Winds ≥ 111 mph (96 kts)
24.630th
(tied with 7 other seasons)
11
(2015)
Accumulated Cyclone Energy
ACE×10⁴ kt²
94.0132.830th318.1
(2018)
East Pacific Tropical Cyclone Storm Tracks January-December 2021

West Pacific

2021 West Pacific Tropical Cyclones
Name Maximum
Category
Max
Cat
Dates
>39 mph
Maximum Sustained Winds Minimum Central Pressure
Dujuan Storm Track
TSFebruary 18Feb 18-2150 mph991 mb
Surigae Storm Track
5April 14Apr 14-25190 mph888 mb
Not_Named Storm Track
TSMay 13May 1340 mph1004 mb
Choi-Wan Storm Track
TSMay 30-June 5May 30-Jun 560 mph986 mb
Koguma Storm Track
TSJune 12Jun 1240 mph996 mb
Champi Storm Track
1June 23Jun 23-2775 mph987 mb
In-Fa Storm Track
2July 18Jul 18-26110 mph951 mb
Cempaka Storm Track
1July 18Jul 18-2185 mph970 mb
Nepartak Storm Track
TSJuly 24Jul 24-2850 mph985 mb
Lupit Storm Track
TSAugust 3Aug 3-960 mph976 mb
Nida Storm Track
TSAugust 4Aug 4-865 mph985 mb
Mirinae Storm Track
TSAugust 6Aug 6-960 mph980 mb
Omais Storm Track
TSAugust 13Aug 13-2260 mph993 mb
Conson Storm Track
TSSeptember 6Sep 6-1170 mph989 mb
Chanthu Storm Track
5September 6Sep 6-17170 mph908 mb
Mindulle Storm Track
5September 23-October 2Sep 23-Oct 2165 mph908 mb
Not_Named Storm Track
TSSeptember 23Sep 2340 mph1001 mb
Lionrock Storm Track
TSOctober 8Oct 8-1040 mph993 mb
Namtheun Storm Track
1October 10Oct 10-1775 mph982 mb
Kompasu Storm Track
TSOctober 10Oct 10-1460 mph981 mb
Malou Storm Track
2October 25Oct 25-2995 mph967 mb
Nyatoh Storm Track
4November 29-December 4Nov 29-Dec 4145 mph933 mb
Rai Storm Track
5December 13Dec 13-20165 mph915 mb
West Pacific Tropical Cyclone Season Counts January-December 2021
Storm Type Count 1991-2020
Mean
1981-2021
Rank*
1945-2021
Record
Tropical Storm
Winds ≥ 39 mph (34 kts)
2326.432nd
(tied with 2 other seasons)
38
(1964)
Typhoon
Winds ≥ 74 mph (64 kts)
1016.238th
(tied with 1 other season)
26
(1964)
Major Typhoon
Winds ≥ 111 mph (96 kts)
59.437th
(tied with 2 other seasons)
16
(2015)
Accumulated Cyclone Energy
ACE×10⁴ kt²
207.7301.434th570.4
(1997)
West Pacific Tropical Cyclone Storm Tracks January-December 2021

North Indian

2021 North Indian Tropical Cyclones
Name Maximum
Category
Max
Cat
Dates
>39 mph
Maximum Sustained Winds Minimum Central Pressure
Tauktae Storm Track
4May 14May 14-19135 mph935 mb
Yaas Storm Track
1May 24May 24-2675 mph974 mb
Gulab:Shaheen-G Storm Track
TSSeptember 24-October 1Sep 24-Oct 160 mph983 mb
Jawad Storm Track
TSDecember 3Dec 3-440 mph997 mb
North Indian Tropical Cyclone Season Counts January-December 2021
Storm Type Count 1991-2020
Mean
1981-2021
Rank*
1972-2021
Record
Tropical Storm
Winds ≥ 39 mph (34 kts)
55.514th
(tied with 13 other seasons)
11
(1992)
Cyclone
Winds ≥ 74 mph (64 kts)
32.27th
(tied with 5 other seasons)
6
(2019)
Major Cyclone
Winds ≥ 111 mph (96 kts)
11.19th
(tied with 16 other seasons)
5
(2019)
Accumulated Cyclone Energy
ACE×10⁴ kt²
16.324.723rd93.0
(2019)
North Indian Tropical Cyclone Storm Tracks January-December 2021

South Indian

2021 South Indian Tropical Cyclones
Name Maximum
Category
Max
Cat
Dates
>39 mph
Maximum Sustained Winds Minimum Central Pressure
Alicia Storm Track
1November 14Nov 14-1775 mph983 mb
Bongoyo Storm Track
TSDecember 7Dec 7-1160 mph992 mb
Chalane Storm Track
TSDecember 25Dec 25-3070 mph990 mb
Danilo Storm Track
1January 1Jan 1-880 mph979 mb
Joshua Storm Track
TSJanuary 15Jan 15-1850 mph998 mb
Eloise Storm Track
TSJanuary 17Jan 17-2160 mph994 mb
Faraji Storm Track
5February 5Feb 5-14160 mph920 mb
Guambe Storm Track
TSFebruary 21Feb 21-2260 mph980 mb
Marian Storm Track
3February 26-March 6Feb 26-Mar 6115 mph952 mb
Habana Storm Track
4March 4Mar 4-16145 mph931 mb
Iman Storm Track
TSMarch 7Mar 7-850 mph991 mb
Jobo Storm Track
TSApril 21Apr 21-2465 mph995 mb
Value occurred in the South Indian
South Indian Tropical Cyclone Season Counts July 2020-June 2021
Storm Type Count 1991-2020
Mean
1981-2021
Rank*
1956-2021
Record
Tropical Storm
Winds ≥ 39 mph (34 kts)
1210.58th
(tied with 3 other seasons)
16
(1997)
Cyclone
Winds ≥ 74 mph (64 kts)
56.125th
(tied with 5 other seasons)
11
(2019)
Major Cyclone
Winds ≥ 111 mph (96 kts)
23.527th
(tied with 8 other seasons)
9
(2019)
Accumulated Cyclone Energy
ACE×10⁴ kt²
99.894.417th186.9
(1994)
South Indian Tropical Cyclone Storm Tracks July 2020-June 2021

Australia

2021 Australia Tropical Cyclones
Name Maximum
Category
Max
Cat
Dates
>39 mph
Maximum Sustained Winds Minimum Central Pressure
Not_Named Storm Track
TSDecember 8Dec 8-1150 mph992 mb
Imogen Storm Track
TSJanuary 3Jan 3-450 mph995 mb
Joshua Storm Track
TSJanuary 15Jan 15-1850 mph998 mb
Kimi Storm Track
TSJanuary 17Jan 17-1860 mph990 mb
Not_Named Storm Track
TSJanuary 21Jan 21-2740 mph995 mb
Not_Named Storm Track
TSJanuary 21Jan 21-2245 mph997 mb
Lucas Storm Track
1January 31-February 3Jan 31-Feb 375 mph980 mb
Not_Named Storm Track
TSFebruary 4Feb 4-640 mph991 mb
Marian Storm Track
3February 26-March 6Feb 26-Mar 6115 mph952 mb
Niran Storm Track
5March 1Mar 1-7160 mph917 mb
Seroja Storm Track
1April 4Apr 4-1180 mph972 mb
Odette Storm Track
TSApril 4Apr 4-1060 mph990 mb
Value occurred in the Southwest Pacific
Value occurred in the Southwest Pacific
Australia Tropical Cyclone Season Counts July 2020-June 2021
Storm Type Count 1991-2020
Mean
1981-2021
Rank*
1956-2021
Record
Tropical Storm
Winds ≥ 39 mph (34 kts)
1310.711th
(tied with 1 other season)
19
(1999)
Tropical Cyclone
Winds ≥ 74 mph (64 kts)
34.927th
(tied with 11 other seasons)
9
(1992, 1996)
Major Tropical Cyclone
Winds ≥ 111 mph (96 kts)
22.416th
(tied with 8 other seasons)
6
(2015)
Accumulated Cyclone Energy
ACE×10⁴ kt²
44.460.529th111.3
(1999)
Australia Tropical Cyclone Storm Tracks July 2020-June 2021

Southwest Pacific

2021 Southwest Pacific Tropical Cyclones
Name Maximum
Category
Max
Cat
Dates
>39 mph
Maximum Sustained Winds Minimum Central Pressure
Not_Named Storm Track
TSDecember 11Dec 11-1245 mph997 mb
Yasa Storm Track
5December 12Dec 12-19160 mph914 mb
Zazu Storm Track
TSDecember 13Dec 13-1660 mph985 mb
Ana Storm Track
1January 30-February 2Jan 30-Feb 275 mph976 mb
Bina Storm Track
TSJanuary 30-February 1Jan 30-Feb 150 mph991 mb
Lucas Storm Track
1January 31-February 3Jan 31-Feb 375 mph980 mb
Not_Named Storm Track
TSFebruary 10Feb 10-1150 mph991 mb
Niran Storm Track
5March 1Mar 1-7160 mph917 mb
Not_Named Storm Track
TSApril 10Apr 10-1145 mph999 mb
**Value occurred in the Southwest Pacific
Value occurred in the Southwest Pacific
Southwest Pacific Tropical Cyclone Season Counts July 2020-June 2021
Storm Type Count 1991-2020
Mean
1981-2021
Rank*
1956-2021
Record
Tropical Storm
Winds ≥ 39 mph (34 kts)
97.112th
(tied with 2 other seasons)
17
(1998)
Tropical Cyclone
Winds ≥ 74 mph (64 kts)
43.915th
(tied with 4 other seasons)
11
(1998)
Major Tropical Cyclone
Winds ≥ 111 mph (96 kts)
22.014th
(tied with 5 other seasons)
6
(2003)
Accumulated Cyclone Energy
ACE×10⁴ kt²
41.152.222nd139.9
(1998)
Southwest Pacific Tropical Cyclone Storm Tracks July 2020-June 2021

Global

2021 Global Tropical Cyclones
Name Maximum
Category
Max
Cat
Dates
>39 mph
Maximum Sustained Winds Minimum Central Pressure
Danilo Storm Track
1January 1Jan 1-880 mph979 mb
Imogen Storm Track
TSJanuary 3Jan 3-450 mph995 mb
Joshua Storm Track
TSJanuary 15Jan 15-1850 mph998 mb
Eloise Storm Track
TSJanuary 17Jan 17-2160 mph994 mb
Kimi Storm Track
TSJanuary 17Jan 17-1860 mph990 mb
Not_Named Storm Track
TSJanuary 21Jan 21-2740 mph995 mb
Not_Named Storm Track
TSJanuary 21Jan 21-2245 mph997 mb
Ana Storm Track
1January 30-February 2Jan 30-Feb 275 mph976 mb
Bina Storm Track
TSJanuary 30-February 1Jan 30-Feb 150 mph991 mb
Lucas Storm Track
1January 31-February 3Jan 31-Feb 375 mph980 mb
Not_Named Storm Track
TSFebruary 4Feb 4-640 mph991 mb
Faraji Storm Track
5February 5Feb 5-14160 mph920 mb
Not_Named Storm Track
TSFebruary 10Feb 10-1150 mph991 mb
Dujuan Storm Track
TSFebruary 18Feb 18-2150 mph991 mb
Guambe Storm Track
TSFebruary 21Feb 21-2260 mph980 mb
Marian Storm Track
3February 26-March 6Feb 26-Mar 6115 mph952 mb
Niran Storm Track
5March 1Mar 1-7160 mph917 mb
Habana Storm Track
4March 4Mar 4-16145 mph931 mb
Iman Storm Track
TSMarch 7Mar 7-850 mph991 mb
Seroja Storm Track
1April 4Apr 4-1180 mph972 mb
Odette Storm Track
TSApril 4Apr 4-1060 mph990 mb
Not_Named Storm Track
TSApril 10Apr 10-1145 mph999 mb
Surigae Storm Track
5April 14Apr 14-25190 mph888 mb
Jobo Storm Track
TSApril 21Apr 21-2465 mph995 mb
Andres Storm Track
TSMay 9May 9-1040 mph1005 mb
Not_Named Storm Track
TSMay 13May 1340 mph1004 mb
Tauktae Storm Track
4May 14May 14-19135 mph935 mb
Ana Storm Track
TSMay 22May 22-2345 mph1006 mb
Yaas Storm Track
1May 24May 24-2675 mph974 mb
Choi-Wan Storm Track
TSMay 30-June 5May 30-Jun 560 mph986 mb
Blanca Storm Track
TSMay 31-June 2May 31-Jun 260 mph998 mb
Koguma Storm Track
TSJune 12Jun 1240 mph996 mb
Carlos Storm Track
TSJune 13Jun 13-1450 mph1000 mb
Bill Storm Track
TSJune 14Jun 14-1560 mph998 mb
Dolores Storm Track
TSJune 18Jun 18-1970 mph990 mb
Claudette Storm Track
TSJune 19Jun 19-2245 mph1004 mb
Champi Storm Track
1June 23Jun 23-2775 mph987 mb
Enrique Storm Track
1June 25Jun 25-3090 mph975 mb
Danny Storm Track
TSJune 28Jun 28-2940 mph1011 mb
Elsa Storm Track
1July 1Jul 1-985 mph991 mb
Felicia Storm Track
4July 14Jul 14-20145 mph947 mb
Guillermo Storm Track
TSJuly 17Jul 17-1960 mph999 mb
In-Fa Storm Track
2July 18Jul 18-26110 mph951 mb
Cempaka Storm Track
1July 18Jul 18-2185 mph970 mb
Nepartak Storm Track
TSJuly 24Jul 24-2850 mph985 mb
Hilda Storm Track
1July 30-August 5Jul 30-Aug 585 mph985 mb
Ignacio Storm Track
TSAugust 2Aug 2-340 mph1004 mb
Lupit Storm Track
TSAugust 3Aug 3-960 mph976 mb
Nida Storm Track
TSAugust 4Aug 4-865 mph985 mb
Jimena Storm Track
TSAugust 5Aug 5-640 mph1005 mb
Mirinae Storm Track
TSAugust 6Aug 6-960 mph980 mb
Kevin Storm Track
TSAugust 7Aug 7-1260 mph999 mb
Linda Storm Track
4August 10Aug 10-20130 mph950 mb
Fred Storm Track
TSAugust 11Aug 11-1765 mph993 mb
Omais Storm Track
TSAugust 13Aug 13-2260 mph993 mb
Grace Storm Track
3August 14Aug 14-21125 mph962 mb
Henri Storm Track
1August 16Aug 16-2275 mph986 mb
Marty Storm Track
TSAugust 23Aug 23-2445 mph1002 mb
Julian Storm Track
TSAugust 24Aug 24-2960 mph995 mb
Nora Storm Track
1August 26Aug 26-3085 mph977 mb
Ida Storm Track
4August 26Aug 26-30150 mph929 mb
Kate Storm Track
TSAugust 30Aug 30-3145 mph1004 mb
Larry Storm Track
3September 1Sep 1-11125 mph955 mb
Conson Storm Track
TSSeptember 6Sep 6-1170 mph989 mb
Chanthu Storm Track
5September 6Sep 6-17170 mph908 mb
Mindy Storm Track
TSSeptember 8Sep 8-945 mph1004 mb
Olaf Storm Track
1September 8Sep 8-1190 mph977 mb
Nicholas Storm Track
1September 12Sep 12-1475 mph989 mb
Odette Storm Track
TSSeptember 17Sep 17-1845 mph1001 mb
Peter Storm Track
TSSeptember 19Sep 19-2150 mph1005 mb
Rose Storm Track
TSSeptember 19Sep 19-2250 mph1004 mb
Sam Storm Track
4September 23-October 5Sep 23-Oct 5155 mph929 mb
Mindulle Storm Track
5September 23-October 2Sep 23-Oct 2165 mph908 mb
Not_Named Storm Track
TSSeptember 23Sep 2340 mph1001 mb
Gulab:Shaheen-G Storm Track
TSSeptember 24-October 1Sep 24-Oct 160 mph983 mb
Teresa Storm Track
TSSeptember 24Sep 24-2545 mph1008 mb
Victor Storm Track
TSSeptember 29-October 2Sep 29-Oct 265 mph997 mb
Lionrock Storm Track
TSOctober 8Oct 8-1040 mph993 mb
Pamela Storm Track
1October 10Oct 10-1380 mph985 mb
Namtheun Storm Track
1October 10Oct 10-1775 mph982 mb
Kompasu Storm Track
TSOctober 10Oct 10-1460 mph981 mb
Rick Storm Track
2October 22Oct 22-25105 mph977 mb
Malou Storm Track
2October 25Oct 25-2995 mph967 mb
Wanda Storm Track
TSOctober 31-November 7Oct 31-Nov 750 mph987 mb
Terry Storm Track
TSNovember 7Nov 7-840 mph1006 mb
Sandra Storm Track
TSNovember 7Nov 7-840 mph1006 mb
Paddy Storm Track
TSNovember 22Nov 22-2445 mph988 mb
Nyatoh Storm Track
4November 29-December 4Nov 29-Dec 4145 mph933 mb
Teratai Storm Track
TSDecember 1Dec 140 mph1004 mb
Jawad Storm Track
TSDecember 3Dec 3-440 mph997 mb
Teratai Storm Track
TSDecember 8Dec 8-940 mph999 mb
Ruby Storm Track
1December 11Dec 11-1480 mph980 mb
Rai Storm Track
5December 13Dec 13-20165 mph915 mb
Global Tropical Cyclone Season Counts January-December 2021
Storm Type Count 1991-2020
Mean
1981-2021
Rank*
1972-2021
Record
Tropical Storm
Winds ≥ 39 mph (34 kts)
9488.210th
(tied with 1 other season)
106
(2020)
Tropical Cyclone
Winds ≥ 74 mph (64 kts)
3748.141st59
(1990, 1992, 2018)
Major Tropical Cyclone
Winds ≥ 111 mph (96 kts)
1625.739th
(tied with 1 other season)
39
(2015)
Accumulated Cyclone Energy
ACE×10⁴ kt²
614.4789.033rd1,163.1
(1992)
Global Tropical Cyclone Storm Tracks January-December 2021

Data Description

The data in this report are derived from NCEI's IBTrACS dataset (Knapp et al. 2010; Schreck et al. 2014). IBTrACS tropical cyclone track and intensity data from agencies and sources around the globe. In this report, data from NOAA's National Hurricane Center (NHC) are used for the North Atlantic and East Pacific. The other basin's use data from the U.S. Military's Joint Typhoon Warning Center (JTWC).

Historical values use the "best track" data that have been analyzed by forecasters after the season using all available data. Operational procedures and observing systems have changed with time and between regions, which makes these data heterogeneous. Intensity data are generally the most reliable since the early 1970s in the Atlantic (Landsea and Franklin 2013) and since the mid-1980s in other regions (Chu et al. 2002). The number of short-lived storms (≤2 days) has also increased since around 2000 due to improvements in observations and analysis techniques (Landsea et al. 2010).

Values for the current year are provisional values from the operational forecast advisories. IBTrACS obtains these from NCEP's TC Vitals, the NCAR Tropical Cyclone Guidance Project, and NHC provisional data. These values are subject to change during the post-season best track analysis. They also only include 6-hourly storm fixes, which means they may miss special advisories at landfall, peak intensity, etc.

The tropical cyclone seasons in the Southern Hemisphere begin in July and end in June, while the Northern Hemisphere seasons are counted from January to December. Storms are counted in all basins, months, and years in which they occur, which means some storms may appear more than once. However, the global totals only include each storm one time.

References

  • Chu, J.-H., C. R. Sampson, A. S. Levine, and E. Fukada, 2002: The joint typhoon warning center tropical cyclone best-tracks, 1945–2000. Naval Research Laboratory, Reference Number NRL/MR/7540-02-16, 22 pp., https://www.metoc.navy.mil/jtwc/products/best-tracks/tc-bt-report.html.
  • Knapp, K. R., M. C. Kruk, D. H. Levinson, H. J. Diamond, and C. J. Neumann, 2010: The International Best Track Archive for Climate Stewardship (IBTrACS). Bull. Amer. Meteor. Soc., 91, 363–376, https://doi.org/10.1175/2009BAMS2755.1.
  • Landsea, C. W., and J. L. Franklin, 2013: Atlantic Hurricane database uncertainty and presentation of a new database format. Mon. Wea. Rev., 141, 3576–3592, https://doi.org/10.1175/MWR-D-12-00254.1.
  • ——, G. A. Vecchi, L. Bengtsson, and T. R. Knutson, 2010: Impact of duration thresholds on Atlantic tropical cyclone counts. J. Climate, 23, 2508–2519, https://doi.org/10.1175/2009JCLI3034.1.
  • Schreck, C. J., K. R. Knapp, and J. P. Kossin, 2014: The Impact of Best Track Discrepancies on Global Tropical Cyclone Climatologies using IBTrACS. Mon. Wea. Rev., 142, 3881–3899, https://doi.org/10.1175/MWR-D-14-00021.1.

Citing This Report

NOAA National Centers for Environmental Information, Monthly Tropical Cyclones Report for Annual 2021, published online January 2022, retrieved on December 10, 2022 from https://www.ncei.noaa.gov/access/monitoring/monthly-report/tropical-cyclones/202113.