GLOBAL TROPICAL CYCLONE TRACKS - MARCH 2011 !!!! IMPORTANT -- PLEASE SEE INFORMATION AT END OF FILE !!!! ************************************************************************* ATLANTIC (ATL) - North Atlantic Ocean, Caribbean Sea, Gulf of Mexico Sources of Information ---------------------- The track coordinates, central pressure and 1-minute average maximum sustained wind values were obtained from the operational forecast/advisories issued by the Tropical Prediction Center/National Hurricane Center located in Miami, Florida. A 1-minute averaging period is the standard used by all U. S. civilian and military warning services for tropical cyclone warnings. Systems Tracked --------------- Possible Subtropical LOW (Invest 90L) 04 - 12 Mar ************************************************************************* Storm Name: None Cyclone Number: None Basin: ATL NRL Invest Number: 90L Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 11 MAR 04 0000 34.9 N 4.5 W 1016 OPC=1014 11 MAR 04 0600 35.7 N 7.7 W 1014 OPC=1014 11 MAR 04 1200 36.8 N 9.9 W 1015 OPC=1014 11 MAR 04 1800 36.6 N 11.3 W 1012 OPC=1014 11 MAR 05 0000 37.3 N 12.7 W 1012 OPC=1012 11 MAR 05 0600 37.1 N 12.7 W 1009 OPC=1010 11 MAR 05 1200 35.8 N 14.8 W 1010 OPC=1007 11 MAR 05 1800 38.6 N 15.5 W 1009 OPC=1007 11 MAR 06 0000 37.5 N 16.7 W 1009 OPC=1008 11 MAR 06 0600 36.4 N 19.2 W 1007 OPC=1002 11 MAR 06 1200 35.2 N 17.9 W 1007 OPC=1005 11 MAR 06 1800 35.3 N 17.1 W 1005 OPC=1005 11 MAR 07 0000 36.9 N 16.8 W 1006 OPC=1002 11 MAR 07 0600 37.1 N 17.3 W 1005 OPC=1000 11 MAR 07 1200 36.4 N 17.6 W 1005 OPC=1004 11 MAR 07 1800 34.9 N 16.7 W 1005 OPC=1004/FRONTAL 11 MAR 08 0000 34.8 N 15.6 W 1007 OPC=1000/FRONTAL 11 MAR 08 0600 34.8 N 14.9 W 1003 OPC=1002/FRONTAL 11 MAR 08 1200 34.9 N 12.8 W 1009 OPC=1006 11 MAR 08 1800 34.5 N 13.7 W 1008 OPC=1006 11 MAR 09 0000 34.6 N 12.9 W 1009 OPC=1006/FRONTAL 11 MAR 09 0600 33.6 N 13.7 W 1008 OPC=1007 11 MAR 09 1200 33.9 N 14.9 W 1010 OPC=1009 11 MAR 09 1800 33.8 N 15.4 W 1004 30 OPC=1008 (NRL) 11 MAR 10 0000 33.5 N 15.6 W 1004 30 OPC=1008 (NRL) 11 MAR 10 0600 33.8 N 16.2 W 1004 30 OPC=1008 (NRL) 11 MAR 10 1200 33.8 N 17.1 W 1003 30 OPC=1008 (NRL) 11 MAR 10 1800 33.7 N 18.2 W 1002 30 OPC=1008 (NRL) 11 MAR 11 0000 33.4 N 18.4 W 1001 30 OPC=1006 (NRL) 11 MAR 11 0600 33.2 N 17.7 W 1000 30 OPC=1002 (NRL) 11 MAR 11 1200 32.8 N 16.7 W 999 35 OPC=1001/FRONTAL (NRL) 11 MAR 11 1800 34.6 N 12.7 W 1003 OPC=1002 11 MAR 12 0000 34.5 N 11.9 W 1005 OPC=1003 11 MAR 12 0600 33.2 N 11.4 W 1004 OPC=1000 11 MAR 12 1200 34.2 N 8.7 W 1007 OPC=1004 Note: This track was compiled and sent to the author by Steve Young--a special thanks to Steve for doing this. The CP values in the column were taken from NCEP re-analysis data except where NRL is cited. The operational OPC pressures are given in the Remarks column. Following is Steve's writeup about this system: "On March 4, 2011, a weak, non-frontal low was analyzed near Gibraltar and drifted westward. By March 5, gale winds were forecast by the Ocean Prediction Center (OPC) off the Portuguese and Spanish coasts. The westward drift continued until the 6th when the system became quasi- stationary near 35N/18W. An OPC analysis for MARch 7, 1200 UTC was the first to show frontal involvement. Frontal zones were seen on charts until March 9. "The Naval Research Lab designated the area Investigative Area 90L on March 9 with estimated winds of 30 kts. 90L drifted eastward until March 11 1200 UTC when OPC analysis showed interaction with a polar front stretching eastward into north Africa. Satellite pictures showed sprial banding encircling a central circulation with CB to the north and west. For most of the 9th and 10th, the satellite presentation resembled that of a subtropical system. Cyclone phase diagrams showed a shallow, marginally warm-cored system at the same time the satellite presentation was most organized. This development occured while the system was over sea-surface temperatures of approximately 15C. "The system passed near Madeira airport (32N/16W) which reported rain and rain showers on March 11 with a minimum station SLP of 999 mb and winds of 20 kts, gusting to 34 kts and CB clouds. A wind shift from southwest to north occurred at about the same time as the minimum sea level pressure. "Following the frontal involvement on March 11, the system weakened rapidly and dissipated off the African coast not far from its initial position." While this system displayed some of the features of a subtropcal cyclone, it was not classified as such by NHC and is highly unlikely to be added as an after-the-fact storm due to its frontal nature. ************************************************************************* ************************************************************************* SOUTH ATLANTIC (SAT) - Atlantic Ocean South of the Equator Systems Tracked --------------- Subtropical Storm ARANI (NRL Invest 90Q) 09 - 21 Mar Further information and a track graphic for Subtropical Storm Arani may be found at the following link: ************************************************************************* Storm Name: ARANI Cyclone Number: None Basin: SAT (NRL Invest Number: 90Q - Name assigned by Brazilian Navy and NWS) Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 11 MAR 09 0600 23.1 S 40.6 W 1012 NCEP re-analysis 11 MAR 09 1200 22.3 S 39.4 W 1010 11 MAR 09 1800 19.7 S 39.0 W 1007 20 NRL data 11 MAR 10 0000 20.0 S 39.1 W 1009 20 11 MAR 10 0600 19.8 S 39.1 W 1008 25 11 MAR 10 1200 19.4 S 39.0 W 1009 25 11 MAR 10 1800 19.0 S 39.0 W 1007 25 11 MAR 11 0000 19.2 S 39.2 W 1008 25 11 MAR 11 0600 19.3 S 39.6 W 1007 25 11 MAR 11 1200 19.4 S 39.9 W 1009 30 11 MAR 12 0000 19.1 S 40.2 W 1008 30 11 MAR 12 0600 19.3 S 40.2 W 1007 30 11 MAR 12 1200 19.6 S 40.2 W 1008 30 11 MAR 12 1800 19.9 S 40.1 W 1005 30 11 MAR 13 0000 20.0 S 40.2 W 1006 30 11 MAR 13 0600 20.0 S 40.6 W 1005 30 11 MAR 13 1200 20.0 S 41.0 W 1004 30 11 MAR 13 1800 20.0 S 40.8 W 1001 30 11 MAR 14 0000 20.4 S 40.8 W 1001 30 11 MAR 14 0600 21.6 S 40.8 W 1002 30 11 MAR 14 1200 22.4 S 40.7 W 1003 30 11 MAR 14 1800 22.7 S 40.2 W 1000 30 11 MAR 15 0000 23.6 S 38.8 W 1000 30 11 MAR 15 0600 24.3 S 37.7 W 1002 30 11 MAR 15 1200 24.8 S 37.2 W 1002 30 11 MAR 15 1800 25.0 S 36.5 W 1000 30 11 MAR 16 0000 25.2 S 34.7 W 998 35 11 MAR 16 0600 25.6 S 33.5 W 993 40 11 MAR 16 1200 25.8 S 32.0 W 989 45 11 MAR 16 1800 25.4 S 30.1 W NCEP re-analysis 11 MAR 17 0000 25.5 S 27.4 W 11 MAR 17 0600 25.3 S 27.0 W 11 MAR 17 1200 25.8 S 25.3 W 11 MAR 17 1800 26.3 S 23.4 W 11 MAR 18 0000 25.7 S 22.4 W 11 MAR 18 0600 26.0 S 20.6 W 11 MAR 18 1200 26.4 S 18.8 W 11 MAR 18 1800 26.0 S 17.2 W 11 MAR 19 0000 25.8 S 15.4 W 11 MAR 19 0600 25.4 S 15.1 W 11 MAR 19 1200 25.0 S 14.8 W 11 MAR 19 1800 24.5 S 14.4 W 11 MAR 20 0000 23.3 S 14.0 W 11 MAR 20 0600 22.6 S 14.9 W Very diffuse 11 MAR 20 1200 22.4 S 14.5 W 11 MAR 20 1800 21.2 S 15.5 W 11 MAR 21 0000 21.3 S 16.4 W Note: This track was compiled and sent to the author by Steve Young, and is based upon NCEP re-analysis and NRL data. This system was classified as a subtropical storm by the Brazilian Navy and National Weather Service and assigned the name Arani at 1500 UTC on 15 March. Some satellite agencies rendered tropical 'T' classifications for Arani, so it bordered on being a tropical storm. Near its peak intensity, it seemed to have multiple circulation centers based on visible satellite loops with a center barely exposed on the southwestern edge of the convection, and another center to the west. This was possibly the rationale for calling it subtropical. ************************************************************************* ************************************************************************* SOUTHWEST INDIAN OCEAN (SWI) - South Indian Ocean West of Longitude 90E Sources of Information ---------------------- The track coordinates as well as the central pressure and 10-minute average maximum sustained wind estimates were obtained from warnings issued by Meteo France's Tropical Cyclone Warning Centre on Reunion Island (MFR), which is the World Meteorological Organization's Regional Specialised Meteorological Centre for the basin. The 1-minute average maximum sustained wind estimates were taken from warnings issued by the Joint Typhoon Warning Center (JTWC) of the U. S. Air Force and Navy, located at Pearl Harbor, Hawaii. The center position coordinates from JTWC were compared with those from MFR and annotations made in the Remarks column when the differences in general amounted to 40-50 nm or more. Following is the link to the Wikipedia page for the 2010-2011 Southwest Indian Ocean Cyclone Season: Systems Tracked --------------- Tropical Storm CHERONO (MFR-07 / 18S) 14 - 25 Mar Tropical Disturbance (MFR-08) 29 - 31 Mar ************************************************************************* Storm Name: CHERONO Cyclone Number: 18S Basin: SWI MFR Tropical Disturbance Number: 07 Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 11 MAR 14 0600 11.0 S 87.0 E 1002 25 11 MAR 14 1200 11.7 S 85.8 E 1002 25 11 MAR 14 1800 12.0 S 85.7 E 1002 25 Locally 30 kts N semi. 11 MAR 15 0000 12.3 S 85.0 E 1002 25 " 11 MAR 15 0600 13.0 S 84.3 E 1002 25 " 11 MAR 15 1200 13.0 S 83.6 E 1002 25 11 MAR 15 2330 13.2 S 82.0 E 30 JTWC satellite bulletin 11 MAR 16 0230 12.6 S 81.7 E 25 SAB satellite bulletin 11 MAR 16 0530 12.8 S 81.2 E 25 JTWC satellite bulletin 11 MAR 16 1200 14.1 S 80.7 E 1000 25 MFR warning 11 MAR 16 1800 14.6 S 79.6 E 25 JTWC satellite bulletin 11 MAR 17 0000 14.8 S 78.2 E 999 25 MFR warnings 11 MAR 17 0600 14.5 S 76.4 E 998 35 30 First JTWC warning 11 MAR 17 1200 15.2 S 75.2 E 995 35 11 MAR 17 1800 15.9 S 74.3 E 995 40 35 11 MAR 18 0000 15.9 S 74.0 E 992 40 11 MAR 18 0600 16.5 S 72.3 E 992 45 40 11 MAR 18 1200 16.8 S 70.6 E 995 40 11 MAR 18 1800 17.2 S 69.7 E 995 40 35 11 MAR 19 0000 17.5 S 68.4 E 995 35 11 MAR 19 0600 19.0 S 67.4 E 995 45 35 Locally 40 kts S semi. 11 MAR 19 1200 19.5 S 66.0 E 997 30 Locally 35 kts S semi. 11 MAR 19 1800 19.9 S 64.2 E 997 35 30 Loc. 35-40 kts S semi. 11 MAR 20 0000 20.5 S 63.0 E 998 30 " 11 MAR 20 0600 20.9 S 61.7 E 998 30 " 11 MAR 20 1200 21.7 S 60.5 E 997 30 " 11 MAR 20 1800 22.3 S 59.8 E 997 30 " 11 MAR 21 0000 22.8 S 58.7 E 997 30 " 11 MAR 21 0600 23.1 S 58.1 E 997 30 " 11 MAR 21 1200 23.5 S 57.4 E 997 30 " 11 MAR 21 1800 24.3 S 57.9 E 997 30 " 11 MAR 22 0000 25.9 S 58.1 E 999 25 Loc. 30-35 kts SE quad 11 MAR 22 0600 25.6 S 56.7 E 1004 25 NRL Data 11 MAR 22 1200 26.8 S 57.3 E 1004 25 11 MAR 22 1800 27.6 S 58.2 E 1004 25 11 MAR 23 0000 27.9 S 59.0 E 1004 25 11 MAR 23 0600 29.7 S 62.4 E 1006 NCEP Re-analysis data 11 MAR 23 1200 30.0 S 64.7 E 1005 11 MAR 23 1800 29.6 S 65.4 E 1006 11 MAR 24 0000 30.0 S 66.3 E 1005 11 MAR 24 0600 29.4 S 68.9 E 1006 11 MAR 24 1200 29.9 S 71.6 E 1007 11 MAR 24 1800 30.0 S 72.6 E 1008 11 MAR 25 0000 30.2 S 75.0 E 1009 Sec Cntr: 32.6S/77.5E 11 MAR 25 0600 29.4 S 77.0 E 1011 Sec Cntr: 33.0S/81.5E Note: The 19/0600 UTC JTWC warning contained the following comments: "ANIMATED MULTISPECTRAL SATELLITE IMAGERY INDICATES CONTINUED WEAKENING OF DEEP CONVECTION OVER THE PAST 06 HOURS WITH THE BULK OF THE DEEP CONVECTION CONFINED TO THE SOUTHERN SEMI-CIRCLE. CONSEQUENTLY, DVORAK ESTIMATES FROM PGTW, KNES AND FMEE HAVE DECREASED TO 35 KNOTS. THE CURRENT INTENSITY, HOWEVER, IS ASSESSED HIGHER AT 45 KNOTS BASED ON A 19/0431Z ASCAT PARTIAL IMAGE, WHICH INDICATES NUMEROUS 40-KNOT VECTORS OVER THE SOUTHWEST QUADRANT, AND A 19/0156Z TRMM 37V IMAGE DEPICTING A WELL-ORGANIZED LOW-LEVEL CIRCULATION CENTER (LLCC) WITH A MICROWAVE EYE FEATURE. RECENT AUTOMATED INTENSITY ESTIMATES HAVE RANGED FROM 45 TO 55 KNOTS." ************************************************************************* Storm Name: None Cyclone Number: None Basin: SWI MFR Tropical Disturbance Number: 08 Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 11 MAR 29 0000 11.0 S 88.3 E 1005 25 11 MAR 29 0600 10.2 S 88.5 E 1005 25 11 MAR 29 1200 9.8 S 88.5 E 1005 25 11 MAR 30 0000 9.3 S 88.1 E 1004 25 Locally 30 kts W semi. 11 MAR 30 1200 8.2 S 87.8 E 1004 25 " 11 MAR 31 0600 7.4 S 89.1 E 1005 25 Locally 30 kts SW semi. Note: These are all the MFR bulletins--none were issued at 29/1800, 30/0600, 30/1800, and 31/0000 UTC. The system was never classified higher than a tropical disturbance, but MFR assigned some Dvorak ratings of T2.0/2.0, which would translate to a tropical depression by most agencies' nomenclature. ************************************************************************* ************************************************************************* NORTHWEST AUSTRALIA/SOUTHEAST INDIAN OCEAN (AUW) - Longitude 90E to 135E Sources of Information ---------------------- The track coordinates as well as the central pressure and 10-minute average maximum sustained wind estimates were obtained from warnings issued by the Tropical Cyclone Warning Centres at Perth, Western Australia, and Darwin, Northern Territory. The 1-minute average maximum sustained wind estimates were taken from warnings issued by the Joint Typhoon Warning Center (JTWC) of the U. S. Air Force and Navy, located at Pearl Harbor, Hawaii. The center position coordinates from JTWC were compared with those from the Australian centres and annotations made in the Remarks column when the differences in general amounted to 40-50 nm or more. Following is the link to the Wikipedia page for the 2010-2011 Australian Region Cyclone Season: Systems Tracked --------------- Tropical LOW (25U / 20S) 30 Mar - 04 Apr ************************************************************************* Storm Name: None Cyclone Number: 20S Basin: AUW Australian LOW: 25U Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 11 MAR 30 0000 10.7 S 132.5 E 1004 20 11 MAR 30 0600 10.6 S 132.3 E 1001 20 11 MAR 30 1200 10.6 S 131.8 E 1002 20 11 MAR 30 1800 10.6 S 131.5 E 1002 20 11 MAR 31 0000 11.0 S 130.9 E 1002 25 11 MAR 31 0600 11.2 S 130.5 E 1000 25 11 MAR 31 1200 12.2 S 131.0 E 1000 25 11 MAR 31 1800 12.4 S 130.4 E 999 25 11 APR 01 0000 11.9 S 129.7 E 1001 25 11 APR 01 0600 12.2 S 129.1 E 998 25 11 APR 01 1200 12.5 S 129.1 E 1000 25 11 APR 01 1800 13.3 S 128.8 E 999 25 11 APR 02 0000 13.5 S 127.6 E 998 35 30 11 APR 02 0600 13.8 S 127.0 E 995 30 11 APR 02 1200 14.0 S 126.6 E 994 35 30 11 APR 02 1800 14.2 S 125.9 E 994 30 11 APR 03 0000 14.6 S 125.3 E 998 35 25 11 APR 03 0600 15.1 S 124.9 E 996 25 11 APR 03 1200 15.6 S 124.5 E 998 35 25 11 APR 03 1800 16.0 S 124.1 E 1000 25 11 APR 04 0000 16.2 S 123.7 E 1000 25 25 11 APR 04 0600 15.7 S 123.0 E 1002 20 11 APR 04 1200 16.3 S 122.4 E 20 ************************************************************************* ************************************************************************* NORTHEAST AUSTRALIA/CORAL SEA (AUE) - Longitude 135E to 160E Sources of Information ---------------------- The track coordinates as well as the central pressure and 10-minute average maximum sustained wind estimates were obtained from warnings issued by the Tropical Cyclone Warning Centres at Darwin, Northern Territory; Brisbane, Queensland; and Port Moresby, Papua New Guinea. The 1-minute average maximum sustained wind estimates were taken from warnings issued by the Joint Typhoon Warning Center (JTWC) of the U. S. Air Force and Navy, located at Pearl Harbor, Hawaii. The center position coordinates from JTWC were compared with those from the Australian centres and annotations made in the Remarks column when the differences in general amounted to 40-50 nm or more. Following is the link to the Wikipedia page for the 2010-2011 Australian Region Cyclone Season: Systems Tracked --------------- Tropical LOW/Depression (21U / 12F) 07 - 09 Mar ************************************************************************* Storm Name: None Cyclone Number: None Basin: AUE/SPA Australian LOW 21U - Fiji Tropical Disturbance Number: 12F Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 11 MAR 07 0600 16.1 S 157.2 E 1005 25 11 MAR 07 1200 15.7 S 158.2 E 1005 25 11 MAR 07 1800 15.7 S 159.8 E 1004 25 11 MAR 07 2100 16.0 S 161.3 E 1004 25 11 MAR 08 0000 16.1 S 163.1 E Sat bulletin 11 MAR 08 0600 16.9 S 164.9 E 1000 40 NW to NE quad 11 MAR 08 1800 19.0 S 171.0 E 1001 35 11 MAR 08 2100 19.3 S 171.6 E 1001 11 MAR 09 0600 21.1 S 174.0 E 1001 35 NW to SE semi Note: It should be noted that Fiji will issue gale warnings on tropical depressions not classifiable as tropical cyclones. The Fiji requirement for a tropical cyclone is that gale-force winds must be located near the centre of circulation and forecast to persist. ************************************************************************* ************************************************************************* SOUTH PACIFIC (SPA) - South Pacific Ocean East of Longitude 160E Sources of Information ---------------------- The track coordinates as well as the central pressure and 10-minute average maximum sustained wind estimates were obtained from warnings issued by the Tropical Cyclone Warning Centres at Nadi, Fiji, and Wellington, New Zealand. The 1-minute average maximum sustained wind estimates were taken from warnings issued by the Joint Typhoon Warning Center (JTWC) of the U. S. Air Force and Navy, located at Pearl Harbor, Hawaii. The center position coordinates from JTWC were compared with those from the Southern Hemisphere centres and annotations made in the Remarks column when the differences in general amounted to 40-50 nm or more. Following is the link to the Wikipedia page for the 2010-2011 South Pacific Cyclone Season: Systems Tracked --------------- Severe Tropical Cyclone BUNE (13F / 19P) 22 Mar - 05 Apr ************************************************************************* Storm Name: BUNE Cyclone Number: 19P Basin: SPA Fiji Tropical Disturbance Number: 13F Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 11 MAR 22 0600 17.2 S 174.9 W 1005 11 MAR 22 1800 17.2 S 176.9 W 1004 11 MAR 23 0000 17.9 S 177.2 W 1003 11 MAR 23 0600 19.7 S 177.8 W 999 25 11 MAR 23 1200 20.0 S 177.8 W 999 30 11 MAR 23 1800 20.5 S 179.0 W 999 35 30 11 MAR 24 0000 21.1 S 179.5 W 995 30 11 MAR 24 0300 21.0 S 179.9 E 990 35 Named TC Bune 11 MAR 24 0600 21.1 S 179.9 W 990 45 40 11 MAR 24 1200 21.3 S 179.9 W 983 50 11 MAR 24 1800 21.5 S 179.9 W 982 65 50 11 MAR 25 0000 21.8 S 179.4 W 976 60 11 MAR 25 0600 22.4 S 179.2 W 970 75 65 11 MAR 25 1200 22.5 S 179.6 W 969 70 11 MAR 25 1800 22.6 S 179.6 W 967 65 70 11 MAR 26 0000 22.9 S 179.8 W 977 60 11 MAR 26 0600 23.0 S 180.0 E 970 65 65 11 MAR 26 1200 23.2 S 179.4 E 973 65 11 MAR 26 1800 23.8 S 179.2 E 973 70 65 11 MAR 27 0000 24.4 S 179.0 E 971 65 11 MAR 27 0600 24.9 S 178.9 E 970 65 65 NZ warnings 11 MAR 27 1200 25.8 S 178.9 E 970 65 11 MAR 27 1800 26.4 S 179.8 E 975 60 60 11 MAR 28 0000 27.4 S 179.1 W 975 60 11 MAR 28 0600 28.4 S 177.9 W 970 50 65 11 MAR 28 1200 29.5 S 176.2 W 967 70 11 MAR 28 1800 31.8 S 174.2 W 975 50 60 JTWC: 31.0S/176.3W 11 MAR 29 0000 32.6 S 176.3 W 989 45 NRL data 11 MAR 29 0600 34.2 S 176.0 W 989 45 11 MAR 29 1200 35.1 S 176.5 W 989 45 11 MAR 29 1800 35.0 S 176.5 W 995 NCEP re-analysis 11 MAR 30 0000 35.0 S 176.9 W 998 11 MAR 30 0600 35.1 S 177.0 W 999 11 MAR 30 1200 35.3 S 177.1 W 1003 11 MAR 30 1800 37.5 S 176.1 W 1004 11 MAR 31 0000 37.9 S 176.2 W 1004 11 MAR 31 0600 39.6 S 175.4 W 1003 11 MAR 31 1200 40.4 S 174.6 W 1002 11 MAR 31 1800 42.6 S 172.2 W 1000 11 APR 01 0000 44.8 S 170.0 W 999 11 APR 01 0600 45.2 S 168.4 W 997 11 APR 01 1200 47.6 S 167.2 W 997 11 APR 01 1800 49.7 S 165.5 W 997 11 APR 02 0000 50.6 S 162.4 W 996 11 APR 02 0600 52.8 S 159.9 W 995 11 APR 02 1200 55.2 S 157.1 W 997 11 APR 02 1800 57.3 S 153.9 W 998 11 APR 03 0000 58.0 S 150.0 W 999 11 APR 03 0600 60.0 S 144.4 W 1000 11 APR 03 1200 60.1 S 140.4 W 999 11 APR 03 1800 60.1 S 134.7 W 999 11 APR 04 0000 60.1 S 130.0 W 998 11 APR 04 0600 59.8 S 125.9 W 998 11 APR 04 1200 58.8 S 122.3 W 996 11 APR 04 1800 57.8 S 119.1 W 997 11 APR 05 0000 57.5 S 112.2 W 997 ************************************************************************* ************************************************************************* ********** SPECIAL NOTE ********** I now have some assistants who are helping to prepare the monthly tropical cyclone files, and I'd like to thank them for their willing- ness to assist me. Kevin Boyle, of Stoke-on-Trent, UK, will be preparing the tracks for Northwest Pacific basin tropical cyclones during the most active part of the NWP season from June through December. Michael Bath, of McLeans Ridges, New South Wales, Australia, is now preparing the track files for Australian Region and South Pacific tropical cyclones. Also, Steve Young sends me tracks with data for the pre-warning and post-warning stages of tropical cyclones in all basins, prepared primarily from NCEP re-analysis data or else taken from NRL files. A very special thanks is due to Kevin, Michael and Steve for their assistance. ************************************************************************* SOURCES OF TROPICAL CYCLONE INFORMATION The purpose of this section is to list some websites where many and varied types of tropical cyclone information are archived. Many readers will know about these already, but for the benefit of those who don't, I wanted to include them. (1) Aircraft Reconnaissance Information --------------------------------------- Various types of messages from reconnaissance aircraft may be retrieved from the following FTP site: Information regarding how to interpret the coded reconnaissance messages may be found at the following URL: Links are also included to websites with further information about the U. S. Air Force 53rd Weather Reconnaissance Squadron and the NOAA Air- craft Operations Center. (2) Archived Advisories ----------------------- All the advisory products (public advisories, forecast/advisories, strike probabilities, discussions, various graphics) issued by TPC/NHC are archived on TPC's website. For the current year (using 2004 as an example), the archived products can be found at: Links to tropical products archives for earlier years are available at the following URL: JTWC warnings for past storms are archived on the NRL Monterrey website: On the NRL site, the link to past years can be found in the upper left corner of the screen. I am not aware at the moment of any other TCWC which archives all its tropical cyclone warning/advisory products for public access, but if I learn of any, I will add them to this list. (3) Satellite Imagery --------------------- Satellite images of tropical cyclones in various sensor bands are available on the NRL Monterrey and University of Wisconsin websites, courtesy of Jeff Hawkins and Chris Velden and their associates. The links are: On the NRL site, the link to past years can be found in the upper left corner of the screen. For the CIMSS site, a link to data archives is located in the lower left portion of the screen. Additional tropical satellite imagery, along with looping ability for composite microwave imagery for the Western Hemisphere north of the equator, can be found at: (1) For the Eastern North Pacific: (2) For the Atlantic, Gulf of Mexico and Caribbean Sea: (4) Cyclone Tracking Information -------------------------------- There is a U. S. Navy site that tracks tropical cyclones at 6-hourly intervals which often includes pre and post-advisory positions. The link to the site is: Steve Young has compiled many of these tracks onto a single webpage which is very user-friendly: ************************************************************************* !!!!!! IMPORTANT NOTE - PLEASE READ !!!!!! To repeat the caveat which is included in the Author's Note at the end of the cyclone summaries--the tropical cyclone tracks I prepare are based upon the operational warnings/advisories/ advices/bulletins which are issued by the various tropical cyclone warning agencies around the world. Users of these tracks should be aware that they are preliminary and subject to revision during post-seasonal analyses of the cyclones by the forecasters and analysts at the several warning centers. For the Atlantic and Northeast Pacific basins, official tropical cyclone reports and "best tracks" can be found at the website of the Tropical Prediction Center/National Hurricane Center: The Joint Typhoon Warning Center's website contains links to their Annual Tropical Cyclone Reports which include that agency's "best tracks" for tropical cyclones in the Northwest Pacific basin, the North Indian Ocean, and the Southern Hemisphere: SPECIAL NOTE: Back issues of the global tropical cyclone summaries and monthly cyclone track files can be obtained at the following websites: PREPARED BY: Gary Padgett garyp@alaweb.com Kevin Boyle michaelpace@btinternet.com Michael Bath mbath@ozemail.com.au SIGNIFICANT CONTRIBUTIONS BY: Michael V. Padua michaelpadua@hotmail.com webmaster@typhoon2000.ph Steve Young shy9@earthlink.net ************************************************************************* ************************************************************************* ************************************************************************* Posted: 08.09.11 for Typhoon2000.com, Typhoon2000.ph, Maybagyo.com