A REVIEW OF THE 2001 TROPICAL CYCLONE SEASON FOR THE NORTHERN HEMISPHERE Following is a tabular summary of all the tropical depressions, tropical storms, hurricanes, and typhoons which occurred in the Northern Hemisphere between 1 January and 31 December 2001, as reported in the Monthly Global Tropical Cyclone Summaries prepared by the author. (1) Number - this is the cyclone warning number assigned by either TPC/NHC, CPHC in Honolulu, or JTWC. If neither of these agencies issued any warnings, no number will be given. (2) Name - the name (if any) assigned by either TPC/NHC, CPHC, or JTWC (and PAGASA for Western North Pacific systems in their area of warning responsibility). Greek letter names were assigned to certain systems by the author for purposes of discussion in the monthly summaries. (3) Dates - range of dates for which tracking information for the cyclone is available in the Global Tropical Cyclone Tracks files prepared by the author. (4) Pressure - Lowest central pressure (either estimated or recorded) during the lifetime of the cyclone. For Atlantic and North- eastern Pacific systems these will be the values reported in operational advisories from TPC/NHC or CPHC. For Northwest Pacific systems the central pressure estimates are taken from warnings issued by the Japanese Meteorological Agency. An asterisk (*) following the pressure indicates the reading was an actual measured pressure normally obtained by a dropsonde released during an aerial reconnaissance flight. Central pressure is given in millibars, which is numerically equivalent to hectopascals. (5) MSW - maximum 1-minute average sustained windspeed in knots. For the Northwestern Pacific and North Indian Ocean basins, these will be the highest value assigned operationally by JTWC. For the Atlantic and Northeastern Pacific basins, the MSW values are taken from the official tropical cyclone reports prepared by the TPC/NHC Hurricane Specialists and which are available on TPC/NHC's website: . (6) Basins - tropical cyclone basins where the cyclone tracked during its life: ATL - North Atlantic, Gulf of Mexico, Caribbean Sea NEP - North Pacific east of Longitude 180 NWP - North Pacific west of Longitude 180 (including South China Sea) NIO - Bay of Bengal and Arabian Sea For tropical systems in the NWP basin, two additional columns of information are given: (1) The tropical storm serial number assigned by the Japanese Meteorological Agency to tropical depressions which are deemed to have reached tropical storm intensity. This does not always agree with JTWC's assessment. (2) An estimate of the maximum 10-minute average sustained wind. The value given represents the highest 10-min avg MSW assigned by any agency. If from any warning center other than JMA, a numbered note following the table identifies which center's value is given. A number in parentheses (e.g. (1) ) following an entry refers to a note following the entries for the given basin. A separate table is given for each of the four Northern Hemisphere basins. Abbreviations for Tropical Cyclone Warning Centers: CPHC - Central Pacific Hurricane Center, Honolulu, Hawaii, U.S.A. CWBT - Central Weather Bureau of Taiwan HKO - Hong Kong Observatory HPC - Hydrometeorological Prediction Center, Camp Springs, Maryland IMD - India Meteorological Department (RSMC New Delhi, India) JMA - Japanese Meteorological Agency (RSMC Tokyo, Japan) JTWC - Joint Typhoon Warning Center, formerly on Guam, now at Pearl Harbor, Hawaii NMCC - National Meteorological Center of China PAGASA - Philippines' Atmospheric, Geophysical & Astronomical Services Administration RSMC - Regional Specialised Meteorological Centre TPC/NHC - Tropical Prediction Center/National Hurricane Center, Miami, Florida, U.S.A. *********************************************************************** ATLANTIC BASIN NUM NAME DATES CENT PRS MSW BASIN (mb) (kts) ------------------------------------------------------------------------ -- ----- 25-28 Apr 1009 35 ATL (1) -- ----- 05-08 May 1004 45 ATL (1) 01 Allison 05-19 Jun 1000* 50 ATL 02 ----- 11-12 Jul 1010 25 ATL 03 Barry 02-07 Aug 990* 60 ATL 04 Chantal 14-22 Aug 997* 60 ATL 05 Dean 22-29 Aug 994 60 ATL 06 Erin 01-17 Sep 968* 105 ATL -- ----- 04-10 Sep --- 30 ATL (2) 07 Felix 07-19 Sep 962 100 ATL 08 Gabrielle 11-21 Sep 975* 70 ATL (7) 09 ----- 19-20 Sep 1005 30 ATL (3) 10 Humberto 21-28 Sep 970 90 ATL 11 Iris 04-09 Oct 948* 125 ATL 12 Jerry 06-08 Oct 1004* 45 ATL 13 Karen 10-15 Oct 982 70 ATL (4) 14 Lorenzo 25-31 Oct 1007 35 ATL 15 Michelle 29 Oct-06 Nov 933* 120 ATL 16 Noel 01-07 Nov 986 65 ATL (5) 17 Olga 23 Nov-06 Dec 973* 80 ATL (6) NOTES: (1) Systems were hybrid-type systems which David Roth felt were possibly subtropical storms. Track and intensity information were provided to the author by David. The minimum central pressure and maximum sustained winds given in the table were obtained from actual ship observations and not through satellite analysis. (2) This system was a tropical wave which was accompanied by a broad LOW. NHC chose not to classify it as a depression--the track and intensity were sent to the author by Roger Edson who felt that it did qualify as a tropical depression. (3) The remnants of this depression moved into the Eastern North Pacific and were instrumental in the development of Hurricane Juliette. (4) Initially identified operationally as Subtropical Storm #1. (5) The official post-storm "best track" identifies the earlier portion of Noel's track as a subtropical storm; however, the system was not classified operationally as a subtropical storm. (6) Initially identified operationally as Subtropical Storm #2. (7) Minimum central pressure occurred as Gabrielle was on the verge of becoming extratropical. The minimum pressure at the time of peak intensity was estimated at 983 mb. This was also the central pressure at the time of landfall near Venice, FL. ************************************************************************ NORTHEAST PACIFIC BASIN NUM NAME DATES CENT PRS MSW BASIN (mb) (kts) ------------------------------------------------------------------------ --- ----- 04-08 Feb 1005 45 NEP (1) 01E Adolph 25 May-02 Jun 940 125 NEP 02E Barbara 20-23 Jun 997 50 NEP 03E Cosme 13-15 Jul 1000 40 NEP 04E Dalila 21-28 Jul 984 65 NEP 05E Erick 20-24 Jul 1002 35 NEP 06E ----- 22-24 Aug 1008 30 NEP 07E Flossie 26 Aug-02 Sep 972 90 NEP 08E Gil 04-09 Sep 975 85 NEP 09E Henriette 04-08 Sep 994 55 NEP 10E Ivo 10-14 Sep 998 45 NEP 01C ----- 11 Sep 1002 30 NEP 11E Juliette 21 Sep-03 Oct 923* 125 NEP (2) 12E Kiko 22-25 Sep 987 65 NEP 02C ----- 23-25 Sep 1008 30 NEP 13E Lorena 02-04 Oct 997 50 NEP 14E ----- 03-04 Oct 1008 30 NEP 15E Manuel 10-18 Oct 1000 50 NEP (3) 16E Narda 20-25 Oct 980 75 NEP 17E Octave 31 Oct-03 Nov 980 75 NEP NOTES: (1) System was a classic subtropical Kona LOW north of the Hawaiian Islands. Track was provided by David Roth of HPC. (2) Juliette developed from the remnants of Atlantic TD-09. (3) Manuel's development was enhanced by the remnants of Atlantic Hurricane Iris. ************************************************************************ NORTHWEST PACIFIC BASIN JTWC NAME(S) JMA DATES CENT MSW MSW BASIN NUM TROP STM PRS 1-MIN 10-MIN NUM (mb) (kts) (kts) ------------------------------------------------------------------------ 01W Auring ---- 17-20 Feb --- 25 30 NWP 02W Barok ---- 18-19 Apr --- 25 25 NWP 03W Cimaron/Crising 0101 07-21 May 985 60 50 NWP --- ----- ---- 16-23 May 1005 30 -- NWP (1) --- Darna ---- 13-20 Jun --- 30 30 NWP (2) 04W Chebi/Emong 0102 19-24 Jun 955 100 80 NWP (3) 05W Durian 0103 29 Jun-03 Jul 970 75 70 NWP (3) 06W Utor/Feria 0104 01-07 Jul 960 80 75 NWP 07W Trami/Gorio 0105 08-12 Jul 992 35 45 NWP 08W ----- ---- 10-11 Jul --- 25 -- NWP (4) --- ----- ---- 16-19 Jul 1004 -- 30 NWP (5) 09W Kong-rey 0106 21 Jul-01 Aug 955 85 70 NWP 10W Yutu/Huaning 0107 22-26 Jul 970 85 80 NWP (6) 11W Toraji/Isang 0108 25-31 Jul 960 100 75 NWP 12W Man-yi 0109 01-11 Aug 945 115 100 NWP (3) --- ----- ---- 02-08 Aug 1000 -- 30 NWP (7) 13W Usagi 0110 08-11 Aug 992 40 45 NWP (3) 14W Pabuk 0111 14-24 Aug 955 95 80 NWP (3) --- Jolina ---- 16-24 Aug --- 25 30 NWP (2) 15W ----- ---- 23-29 Aug 1000 30 30 NWP (8) 16W Wutip 0112 26 Aug-04 Sep 930 130 90 NWP 17W Sepat 0113 27 Aug-01 Sep 992 45 40 NWP 18W Fitow 0114 28-31 Aug 990 40 40 NWP (3) 19W Danas 0115 02-14 Sep 950 115 90 NWP (3) --- "Rho" ---- 05-12 Sep 1000 35 30 NWP (9) 20W Nari/Kiko 0116 05-21 Sep 955 100 85 NWP --- "Sigma" ---- 07-12 Sep 1002 35 30 NWP (9) 21W Vipa 0117 17-23 Sep 970 75 70 NWP (3) 22W Francisco 0118 18-27 Sep 945 100 90 NWP (3) 23W Lekima/Labuyo 0119 21-30 Sep 960 95 75 NWP 24W Krosa 0120 03-11 Oct 950 105 90 NWP (3) 25W Haiyan/Maring 0121 11-19 Oct 960 90 80 NWP (3) 26W Podul 0122 18-29 Oct 925 140 120 NWP (3) --- ----- ---- 21-22 Oct 1002 -- 25 NWP (5) 27W Lingling/Nanang 0123 06-12 Nov 940 115 100 NWP (3) 28W Ondoy ---- 17-25 Nov 996 40 40 NWP (A) 29W Pabling ---- 18-24 Nov 1004 35 30 NWP (B) 30W Kajiki/Quedan 0124 04-09 Dec 996 35 40 NWP (C) 31W Faxai 0125 10-26 Dec 915 155 130 NWP (3) 32W Vamei 0126 26-28 Dec --- 75 40 NWP (D) NOTES: (1) No warnings were issued on this system by any warning agency. Track and intensity information were provided to the author by Roger Edgon. (2) PAGASA was the only agency to issue warnings on these depressions. Roger Edson also sent tracks for these systems to the author. (3) The highest 10-min avg MSW was assigned by NMCC. (4) Carried as a tropical depression by JTWC only. (5) Carried as a tropical depression by JMA only. (6) The highest 10-min avg MSW was assigned by HKO. (7) Not treated as a tropical depression by JTWC but was by JMA and NMCC. (8) Roger Edson also sent the author tracking and intensity information for this system. Roger feels that the system was a tropical storm with winds peaking at 50 kts. (9) These systems were not carried as tropical depressions by JTWC but were by JMA and some of the other warning agencies. Roger Edson also sent the author tracks and intensities for these systems. The 1-min avg MSW values are Roger's estimates. (A) JTWC and PAGASA both classified this system as a tropical storm, but no other warning center did so. (B) JTWC was the only warning center to classify this system as a tropical storm. (C) PAGASA estimated 10-min avg winds as high as 45 kts for this storm. (D) Vamei's typhoon intensity was well-attested to by some ship observations which apparently were available to JTWC but not to other centers; hence, JMA's intensity estimates were unusally far below JTWC's and the corresponding central pressure estimates well above 1000 mb. For this reason I did not include any central pressure values in the cyclone tracks file. The remnants of Vamei redeveloped briefly in the North Indian Ocean basin where they were identified as TC-05B by JTWC. ************************************************************************ NORTH INDIAN OCEAN BASIN NUM NAME DATES CENT PRS MSW BASIN (mb) (kts) ------------------------------------------------------------------------ --- "Omicron" 10-15 Mar 1004 35 NIO (1) --- "Pi" 28 Apr-03 May 1003 40 NIO (2) 01A ----- 21-28 May --- 115 NIO 02A ----- 25-28 Sep --- 35 NIO 03A ----- 09-10 Oct --- 35 NIO --- ----- 15-16 Oct --- 35 NIO (3) 04B ----- 09-12 Nov --- 35 NIO 05B Vamei 28-31 Dec --- 35 NIO (4) NOTES: (1) No warnings were issued on this system. Track and intensity data were provided to the author by Roger Edson. (2) No warnings were issued on this system. Track and intensity data were provided to the author by Roger Edson. This system actually began in the Gulf of Thailand (NWP basin) and crossed the Malay Peninsula into the Bay of Bengal. (3) No warnings were issued on this system by JTWC, but IMD classified it as a "cyclonic storm", i.e., a tropical storm. (4) System was a weak and brief redevelopment of the short-lived, near- equatorial Typhoon Vamei (32W) which developed near Singapore. ************************************************************************ Prepared by Gary Padgett garyp@alaweb.com Home: 334-222-5327 Work: 850-882-2594 ======================================================================== Published: 01.21.02 / Typhoon2000.com