####018002532#### ABPZ30 KNHC 011258 TWSEP Monthly Tropical Weather Summary NWS National Hurricane Center Miami FL 800 AM PST Fri Dec 1 2023 For the eastern North Pacific, east of 140 degrees west longitude: One tropical storm (Ramon) formed in the eastern Pacific basin in the month of November. Based on a 30-year climatology (1991-2020), one named storm typically forms in November every two years. Overall, the 2023 eastern Pacific hurricane season was near normal in terms of the number of named storms but above normal in terms of the number of hurricanes and major hurricanes. In 2023, 17 named storms formed, of which 10 became hurricanes and 8 became major hurricanes (category 3 or greater on the Saffir-Simpson Hurricane Wind Scale). This compares to the long-term (1991-2020) averages of 15 named storms, 8 hurricanes, and 4 major hurricanes. In terms of Accumulated Cyclone Energy (ACE), which measures the combined strength and duration of tropical storms and hurricanes, activity in 2023 was about 20 percent above the long-term (1991-2020) average. Reports on individual cyclones, when completed, are available at the National Hurricane Center website at: www.nhc.noaa.gov/data/tcr/index.php?season=2023&basin=epac Summary Table Name Dates Max Wind (mph) --------------------------------------------------- H Adrian 27 Jun-2 Jul 105* H Beatriz 29 Jun-1 Jul 85 MH Calvin 11-19 Jul 125 TD Four-E 20-21 Jul 35* MH Dora 31 Jul-16 Aug 145 TS Eugene 5-7 Aug 70* MH Fernanda 12-17 Aug 130* TS Greg 14-17 Aug 50* MH Hilary 16-21 Aug 145 TS Irwin 27-29 Aug 45 MH Jova 4-10 Sep 160 TD Twelve-E 15-18 Sep 35* TS Kenneth 19-22 Sep 50 TD Fourteen-E 23-25 Sep 35 MH Lidia 3-11 Oct 140 TS Max 8-10 Oct 60 MH Norma 17-23 Oct 130 MH Otis 22-25 Oct 165 TS Pilar 28 Oct- 6 Nov 60 TS Ramon 23-26 Nov 45 --------------------------------------------------- * Denotes a storm for which NHC's post-storm analysis is complete. $$ Hurricane Specialist Unit ####018003114#### ABNT30 KNHC 011258 TWSAT Monthly Tropical Weather Summary NWS National Hurricane Center Miami FL 800 AM EST Fri Dec 1 2023 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: No tropical cyclones formed in the Atlantic basin in the month of November. Based on a 30-year climatology (1991-2020), a tropical storm forms in November once every year or two, and a hurricane forms once every two years. A disturbance (Potential Tropical Cyclone Twenty-Two) caused heavy rains and flooding across portions of Jamaica, eastern Cuba, and Hispaniola during the middle part of the month, but the system did not become a tropical cyclone. Overall, the 2023 Atlantic hurricane season had above-normal activity in terms of the number of named storms but a normal amount of activity in terms of the number of hurricanes and major hurricanes. In 2023, 20 storms of at least tropical storm strength formed, of which 7 became hurricanes and 3 became major hurricanes (category 3 or higher on the Saffir-Simpson Hurricane Wind Scale). This compares to the long-term (1991-2020) averages of 14 named storms, 7 hurricanes, and 3 major hurricanes. In terms of Accumulated Cyclone Energy (ACE), which measures the strength and duration of tropical storms and hurricanes, activity in the basin in 2023 was about 20 percent above average compared to the long-term (1991-2020) mean. Reports on individual cyclones, when completed, are available at the National Hurricane Center website at www.hurricanes.gov/data/tcr/index.php?season=2023&basin=atl Summary Table Name Dates Max Wind (mph) ----------------------------------------------------------- Unnamed STS 16-17 Jan 70* TS Arlene 1-3 Jun 40* TS Bret 19-24 Jun 70* TS Cindy 22-26 Jun 60* H Don 14-24 Jul 75* TS Emily 20-21 Aug 50* MH Franklin 20 Aug- 1 Sep 150 TS Gert 19- 4 Sep 60* TS Harold 21-23 Aug 50 MH Idalia 26-31 Aug 130 TS Jose 29 Aug- 1 Sep 60 TS Katia 1- 4 Sep 60 MH Lee 5-16 Sep 165 H Margot 7-17 Sep 90 H Nigel 15-22 Sep 100 TS Ophelia 22-24 Sep 70 TS Philippe 23 Sep- 6 Oct 50 TS Rina 28 Sep- 1 Oct 50* TS Sean 11-15 Oct 45 H Tammy 18-29 Oct 105 TD Twenty-One 23-24 Oct 30 ----------------------------------------------------------- * Denotes a storm for which the post-storm analysis is complete. $$ Hurricane Specialist Unit