November 2023 Tropical Cyclones Report

Summary

Four named storms occurred across the globe in November, which was tied 2010 for the second fewest in November since 1981. One of those reached tropical cyclone strength (≥74 mph), and none reached major tropical cyclone strength (≥111 mph). The global accumulated cyclone energy (ACE: an integrated metric of the strength, frequency, and duration of tropical storms) was less than 20% of the 1991-2020 average for November.

No storms were active in the Atlantic, which happens about once every three Novembers. The 2023 Atlantic hurricane season officially ends on November 30. It had an above-normal number of named storms (20) but near-normal numbers of hurricanes (7) and major hurricanes (3). The ACE was about 20% above its 1991-2020 average.

Two storms were active in the East Pacific, including Pilar, which formed in October. This was the ninth time since 1949 that two storms were active in the East Pacific in November, but no year has had more than two. Neither storm became a hurricane, and the ACE was about twice its 1991-2020 average value. The 2023 East Pacific hurricane season had a near-normal number of named storms (17) and above-normal numbers of hurricanes (10) and major hurricanes (8). The ACE was about 25% above its 1991-2020 average.

No storms were active in the West Pacific in November for just the third time since 1981. The North Indian Ocean had one named storm, Midhili, and no cyclones or major cyclones. These were all below their 1991-2020 averages. The only storm in the Southern Hemisphere in November was Cyclone Mal in the Southwest Pacific. This activity was near normal for the Southern Hemisphere.

North Atlantic

No North Atlantic Tropical Cyclones occurred during November 2023.

North Atlantic Tropical Cyclone November Counts

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1851-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	0	1.0 (10 in 10 Novembers)	29th (tied with 14 other Novembers)	4 (1961)
Hurricane Winds ≥ 74 mph (64 kts)	0	0.6 (6 in 10 Novembers)	20th (tied with 23 other Novembers)	3 (2001, 2022)
Major Hurricane Winds ≥ 111 mph (96 kts)	0	0.2 (2 in 10 Novembers)	7th (tied with 36 other Novembers)	2 (2020)
Accumulated Cyclone Energy ACE×10⁴ kt²	0.0	6.1	29th (tied with 14 other Novembers)	71.0 (1932)

North Atlantic Tropical Cyclone Season Counts January-November 2023

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1851-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	20	14.3	4th	30 (2020)
Hurricane Winds ≥ 74 mph (64 kts)	7	7.2	17th (tied with 7 other seasons)	14 (2005, 2020)
Major Hurricane Winds ≥ 111 mph (96 kts)	3	3.2	14th (tied with 7 other seasons)	7 (2005, 2020)
Accumulated Cyclone Energy ACE×10⁴ kt²	144.1	121.7	13th	258.6 (1933)

East Pacific

November 2023 East Pacific Tropical Cyclones

Name	Maximum CategoryMax Cat	Dates >39 mph	Maximum Sustained Winds	Minimum Central Pressure
Pilar	TS	October 30-November 5Oct 30-Nov 5	60 mph	996 mb
Ramon	TS	November 25Nov 25-26	45 mph	1002 mb

East Pacific Tropical Cyclone November Counts

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1949-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	2	0.7 (7 in 10 Novembers)	1st (tied with 5 other Novembers)	2 (9 Novembers)
Hurricane Winds ≥ 74 mph (64 kts)	0	0.3 (3 in 10 Novembers)	10th (tied with 33 other Novembers)	1 (12 Novembers)
Major Hurricane Winds ≥ 111 mph (96 kts)	0	0.1 (1 in 10 Novembers)	3rd (tied with 40 other Novembers)	1 (2011, 2015)
Accumulated Cyclone Energy ACE×10⁴ kt²	4.8	2.5	8th	14.0 (2015)

East Pacific Tropical Cyclone Season Counts January-November 2023

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1949-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	17	16.9	23rd (tied with 4 other seasons)	27 (1992)
Hurricane Winds ≥ 74 mph (64 kts)	10	8.8	14th (tied with 5 other seasons)	16 (1990, 1992, 2014, 2015)
Major Hurricane Winds ≥ 111 mph (96 kts)	8	4.6	6th (tied with 2 other seasons)	11 (2015)
Accumulated Cyclone Energy ACE×10⁴ kt²	166.3	132.6	14th	318.1 (2018)

West Pacific

No West Pacific Tropical Cyclones occurred during November 2023.

West Pacific Tropical Cyclone November Counts

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1945-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	0	2.9	41st (tied with 2 other Novembers)	6 (1947, 1968, 1991, 2019)
Typhoon Winds ≥ 74 mph (64 kts)	0	1.8	36th (tied with 7 other Novembers)	6 (2019)
Major Typhoon Winds ≥ 111 mph (96 kts)	0	0.9 (9 in 10 Novembers)	27th (tied with 16 other Novembers)	4 (1947, 1952, 1954, 1992)
Accumulated Cyclone Energy ACE×10⁴ kt²	0.0	29.8	41st (tied with 2 other Novembers)	130.9 (1954)

West Pacific Tropical Cyclone Season Counts January-November 2023

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1945-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	16	24.9	41st	37 (1964)
Typhoon Winds ≥ 74 mph (64 kts)	12	15.5	32nd (tied with 5 other seasons)	25 (1964)
Major Typhoon Winds ≥ 111 mph (96 kts)	8	9.0	21st (tied with 3 other seasons)	15 (1957, 1965, 2015)
Accumulated Cyclone Energy ACE×10⁴ kt²	268.1	286.0	20th	522.4 (1997)

North Indian

November 2023 North Indian Tropical Cyclones

Name	Maximum CategoryMax Cat	Dates >39 mph	Maximum Sustained Winds	Minimum Central Pressure
Midhili	TS	November 16Nov 16-17	45 mph	1001 mb

North Indian Tropical Cyclone November Counts

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1972-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	1	1.6	19th (tied with 19 other Novembers)	4 (1992, 2013)
Cyclone Winds ≥ 74 mph (64 kts)	0	0.7 (7 in 10 Novembers)	21st (tied with 22 other Novembers)	2 (8 Novembers)
Major Cyclone Winds ≥ 111 mph (96 kts)	0	0.3 (3 in 10 Novembers)	10th (tied with 33 other Novembers)	2 (2015, 2019)
Accumulated Cyclone Energy ACE×10⁴ kt²	0.5	6.4	36th	25.5 (1992)

North Indian Tropical Cyclone Season Counts January-November 2023

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1972-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	7	4.8	3rd (tied with 2 other seasons)	10 (1992)
Cyclone Winds ≥ 74 mph (64 kts)	4	1.9	2nd (tied with 3 other seasons)	6 (2019)
Major Cyclone Winds ≥ 111 mph (96 kts)	3	1.0	2nd (tied with 1 other season)	5 (2019)
Accumulated Cyclone Energy ACE×10⁴ kt²	53.8	21.8	2nd	89.7 (2019)

South Indian

No South Indian Tropical Cyclones occurred during November 2023.

South Indian Tropical Cyclone November Counts

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1956-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	0	1.0 (10 in 10 Novembers)	27th (tied with 17 other Novembers)	2 (11 Novembers)
Cyclone Winds ≥ 74 mph (64 kts)	0	0.4 (4 in 10 Novembers)	15th (tied with 29 other Novembers)	2 (1989, 1997, 2005)
Major Cyclone Winds ≥ 111 mph (96 kts)	0	0.3 (3 in 10 Novembers)	10th (tied with 34 other Novembers)	1 (10 Novembers)
Accumulated Cyclone Energy ACE×10⁴ kt²	0.0	7.0	27th (tied with 17 other Novembers)	38.5 (1997)

South Indian Tropical Cyclone Season Counts July-November 2023

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1956-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	0	1.7	35th (tied with 9 other seasons)	5 (1997)
Cyclone Winds ≥ 74 mph (64 kts)	0	0.5 (5 in 10 seasons)	18th (tied with 26 other seasons)	3 (1997)
Major Cyclone Winds ≥ 111 mph (96 kts)	0	0.3 (3 in 10 seasons)	11th (tied with 33 other seasons)	1 (11 seasons)
Accumulated Cyclone Energy ACE×10⁴ kt²	0.0	8.6	35th (tied with 9 other seasons)	47.4 (1997)

Australia

No Australia Tropical Cyclones occurred during November 2023.

Australia Tropical Cyclone November Counts

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1956-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	0	0.5 (5 in 10 Novembers)	20th (tied with 24 other Novembers)	2 (5 Novembers)
Tropical Cyclone Winds ≥ 74 mph (64 kts)	0	0.2 (2 in 10 Novembers)	8th (tied with 36 other Novembers)	1 (7 Novembers)
Major Tropical Cyclone Winds ≥ 111 mph (96 kts)	0	0.0 (0 in 10 Novembers)	2nd (tied with 42 other Novembers)	1 (2006)
Accumulated Cyclone Energy ACE×10⁴ kt²	0.0	1.4	20th (tied with 24 other Novembers)	11.8 (2006)

Australia Tropical Cyclone Season Counts July-November 2023

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1956-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	0	0.8 (8 in 10 seasons)	22nd (tied with 22 other seasons)	3 (1984, 1997, 2002, 2008)
Tropical Cyclone Winds ≥ 74 mph (64 kts)	0	0.2 (2 in 10 seasons)	8th (tied with 36 other seasons)	2 (1984)
Major Tropical Cyclone Winds ≥ 111 mph (96 kts)	0	0.0 (0 in 10 seasons)	2nd (tied with 42 other seasons)	1 (2006)
Accumulated Cyclone Energy ACE×10⁴ kt²	0.0	1.7	22nd (tied with 22 other seasons)	11.8 (2006)

Southwest Pacific

November 2023 Southwest Pacific Tropical Cyclones

Name	Maximum CategoryMax Cat	Dates >39 mph	Maximum Sustained Winds	Minimum Central Pressure
Mal	1	November 13Nov 13-16	85 mph	977 mb

Southwest Pacific Tropical Cyclone November Counts

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1956-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	1	0.4 (4 in 10 Novembers)	3rd (tied with 9 other Novembers)	3 (1998)
Tropical Cyclone Winds ≥ 74 mph (64 kts)	1	0.2 (2 in 10 Novembers)	2nd (tied with 4 other Novembers)	3 (1998)
Major Tropical Cyclone Winds ≥ 111 mph (96 kts)	0	0.1 (1 in 10 Novembers)	3rd (tied with 41 other Novembers)	1 (1991, 1998)
Accumulated Cyclone Energy ACE×10⁴ kt²	4.6	1.5	4th	17.2 (1998)

Southwest Pacific Tropical Cyclone Season Counts July-November 2023

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1956-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	2	0.6 (6 in 10 seasons)	3rd (tied with 2 other seasons)	5 (1998)
Tropical Cyclone Winds ≥ 74 mph (64 kts)	2	0.2 (2 in 10 seasons)	2nd (tied with 1 other season)	3 (1998)
Major Tropical Cyclone Winds ≥ 111 mph (96 kts)	1	0.1 (1 in 10 seasons)	1st (tied with 3 other seasons)	1 (1991, 1998, 2007, 2024)
Accumulated Cyclone Energy ACE×10⁴ kt²	17.0	2.1	2nd	22.0 (1998)

Global

November 2023 Global Tropical Cyclones

Name	Maximum CategoryMax Cat	Dates >39 mph	Maximum Sustained Winds	Minimum Central Pressure
Pilar	TS	October 30-November 5Oct 30-Nov 5	60 mph	996 mb
Mal	1	November 13Nov 13-16	85 mph	977 mb
Midhili	TS	November 16Nov 16-17	45 mph	1001 mb
Ramon	TS	November 25Nov 25-26	45 mph	1002 mb

Global Tropical Cyclone November Counts

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1972-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	4	7.5	41st (tied with 1 other November)	12 (2019, 2020)
Tropical Cyclone Winds ≥ 74 mph (64 kts)	1	4.0	35th (tied with 7 other Novembers)	9 (2019)
Major Tropical Cyclone Winds ≥ 111 mph (96 kts)	0	1.8	36th (tied with 7 other Novembers)	5 (1992, 2020)
Accumulated Cyclone Energy ACE×10⁴ kt²	9.9	54.4	41st	150.6 (1992)

Global Tropical Cyclone Season Counts January-November 2023

Storm Type	Count	1991-2020 Mean	1981-2023 Rank*	1972-2023 Record
Tropical Storm Winds ≥ 39 mph (34 kts)	75	82.4	31st (tied with 1 other season)	99 (2020)
Tropical Cyclone Winds ≥ 74 mph (64 kts)	44	45.0	19th (tied with 2 other seasons)	57 (1990)
Major Tropical Cyclone Winds ≥ 111 mph (96 kts)	29	24.1	6th	38 (2015)
Accumulated Cyclone Energy ACE×10⁴ kt²	833.6	740.8	10th	1,113.0 (1992)

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 basins 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.