GLOBAL TROPICAL CYCLONE TRACKS - APRIL 2008 !!!! IMPORTANT -- PLEASE SEE NOTE AT END OF FILE !!!! ************************************************************************* NORTHWEST PACIFIC (NWP) - North Pacific Ocean West of Longitude 180 Sources of Information ---------------------- The track coordinates and 1-minute average maximum sustained wind values in general were taken from operational warnings issued by the Joint Typhoon Warning Center (JTWC) of the U. S. Air Force and Navy, located at Pearl Harbor, Hawaii. The central pressure and 10-minute average maximum sustained wind estimates for most systems were obtained from warnings issued by the Japanese Meteorological Agency (JMA), which is the World Meteorological Organization's Regional Specialised Meteor- ological Centre for the basin. In a few instances, information from warnings issued by other Asian warning centers may have been utilized. The center position coordinates from JMA and other centers were com- pared with those from JTWC and annotations made in the Remarks column when the differences in general amounted to 40-50 nm or more. Michael V. Padua of Naga City in the Philippines, owner of the Typhoon 2000 website, sends me cyclone tracks based upon warnings issued by the Japanese Meteorological Agency and the Philippines' Atmospheric, Geophysical & Astronomical Services Administration (PAGASA). A special thanks to Michael for his efforts. Systems Tracked --------------- Typhoon NEOGURI (02W / 0801 / AMBO) 13 - 19 Apr ************************************************************************* Storm Name: NEOGURI Cyclone Number: 02W Basin: NWP PAGASA Internal Name: AMBO JMA Tropical Storm Number: 0801 Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 08 APR 13 1200 9.0 N 124.0 E 1004 25 JMA bulletin 08 APR 13 1800 8.0 N 123.0 E 1004 25 " 08 APR 14 0000 9.6 N 121.5 E 1004 30 30 JMA: 8.9N/121.3E 08 APR 14 0600 9.3 N 120.3 E 1004 30 30 JMA: 8.9N/120.3E 08 APR 14 1200 9.2 N 119.0 E 1004 35 30 08 APR 14 1800 9.7 N 118.2 E 1002 35 30 JMA: 9.8N/117.6E 08 APR 15 0000 10.6 N 117.1 E 1002 35 30 JMA: 10.0N/117.1E 08 APR 15 0600 10.7 N 116.1 E 998 35 35 08 APR 15 1200 11.2 N 114.7 E 998 40 35 08 APR 15 1800 12.8 N 114.3 E 992 45 45 08 APR 16 0000 13.3 N 113.1 E 985 60 50 08 APR 16 0600 13.4 N 112.4 E 980 65 55 08 APR 16 1200 13.7 N 112.4 E 970 75 65 08 APR 16 1800 14.7 N 112.3 E 970 75 65 08 APR 17 0000 15.2 N 112.1 E 965 80 70 08 APR 17 0600 15.9 N 112.0 E 960 90 80 08 APR 17 1200 16.6 N 111.9 E 960 85 80 08 APR 17 1800 17.2 N 111.9 E 960 95 80 08 APR 18 0000 18.0 N 111.5 E 960 95 80 08 APR 18 0600 18.6 N 111.3 E 965 85 75 08 APR 18 1200 19.4 N 111.3 E 970 80 70 08 APR 18 1800 20.0 N 111.6 E 975 75 65 08 APR 19 0000 20.9 N 111.6 E 980 55 55 08 APR 19 0600 21.7 N 112.1 E 990 45 45 08 APR 19 1200 22.6 N 113.0 E 996 35 35 Inland in China 08 APR 19 1800 25.0 N 115.0 E 1000 25 JMA bulletin ************************************************************************* ************************************************************************* NORTH INDIAN OCEAN (NIO) - Bay of Bengal and Arabian Sea Sources of Information ---------------------- The track coordinates and 1-minute average maximum sustained wind values in general were taken from operational warnings issued by the Joint Typhoon Warning Center (JTWC) of the U. S. Air Force and Navy, located at Pearl Harbor, Hawaii. Occasionally some information may have been gleaned from the daily tropical weather outlooks and other bulletins issued by the Indian Meteorological Department (IMD), which is the World Meteorological Organization's Regional Specialised Meteor- ological Centre for the basin. The reported maximum sustained winds are based on a 1-minute averaging period, which is used by all U. S. civilian and military weather services for tropical cyclone warnings. For synoptic observations in the North Indian Ocean region, both 10-minute and 3-minute average winds are employed, but IMD makes no attempt to modify the Dvorak scale for estimating tropical cyclone intensity; hence, a 1-minute average MSW is implied. Systems Tracked --------------- Very Severe Cyclonic Storm NARGIS (01B) 27 Apr - 03 May ************************************************************************* Storm Name: NARGIS Cyclone Number: 01B Basin: NIO Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 08 APR 27 0300 12.0 N 87.0 E 25 08 APR 27 1200 12.1 N 85.6 E 35 IMD: 12.0N/86.5E 08 APR 27 1800 12.5 N 85.4 E 40 08 APR 28 0000 12.8 N 85.5 E 55 08 APR 28 0600 13.3 N 85.5 E 65 08 APR 28 1200 12.9 N 85.3 E 65 08 APR 28 1800 13.2 N 85.3 E 75 08 APR 29 0000 13.6 N 85.2 E 85 IMD-2100Z: 13.0N/85.5E 08 APR 29 0600 13.5 N 85.6 E 80 08 APR 29 1200 13.5 N 86.2 E 70 IMD: 14.0N/85.5E 08 APR 29 1800 13.6 N 86.5 E 70 08 APR 30 0000 14.4 N 86.9 E 75 08 APR 30 0600 14.6 N 87.1 E 70 08 APR 30 1200 15.0 N 87.5 E 70 IMD: 14.5N/87.0E 08 APR 30 1800 15.3 N 88.2 E 65 08 MAY 01 0000 15.5 N 89.0 E 70 IMD-2100Z: 15.0N/87.5E 08 MAY 01 0600 15.8 N 89.8 E 75 08 MAY 01 1200 15.9 N 90.7 E 90 08 MAY 01 1800 15.8 N 91.7 E 110 08 MAY 02 0000 15.7 N 92.6 E 100 08 MAY 02 0600 15.9 N 93.7 E 115 08 MAY 02 1200 16.0 N 94.7 E 105 Inland in Myanmar 08 MAY 02 1800 16.3 N 95.6 E 85 08 MAY 03 0000 16.9 N 96.2 E 70 08 MAY 03 0600 17.3 N 97.0 E 50 08 MAY 03 1200 18.3 N 97.5 E 40 ************************************************************************* ************************************************************************* 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. Systems Tracked --------------- Tropical Cyclone ROSIE (28S) 20 - 25 Apr Tropical Cyclone DURGA (29S) 22 - 25 Apr ************************************************************************* Storm Name: ROSIE Cyclone Number: 28S Basin: AUW (Name assigned by Perth TCWC) Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 08 APR 20 2100 8.5 S 98.7 E 30 SAB satellite bulletin 08 APR 21 0000 8.7 S 99.5 E 30 JTWC satellite bulletin 08 APR 21 0600 9.1 S 100.5 E 30 " 08 APR 21 1200 9.1 S 102.4 E 998 30 30 JTWC: 9.7S/102.0E 08 APR 21 1800 9.5 S 103.7 E 994 40 30 JTWC: 10.0S/103.7E 08 APR 22 0000 10.5 S 104.8 E 988 40 08 APR 22 0600 11.3 S 105.2 E 980 45 50 08 APR 22 1200 10.8 S 105.7 E 984 45 08 APR 22 1800 10.7 S 106.3 E 988 35 40 08 APR 23 0000 11.1 S 106.8 E 988 40 08 APR 23 0600 11.4 S 106.3 E 990 35 35 08 APR 23 1200 11.6 S 106.2 E 994 30 08 APR 23 1400 12.8 S 106.6 E 994 30 Relocated 08 APR 23 1800 12.6 S 106.2 E 994 35 30 Gales in SE quadrant 08 APR 24 0000 14.2 S 106.0 E 994 30 " 08 APR 24 0600 15.0 S 105.9 E 994 30 30 Gales in NE & SE quads 08 APR 24 1200 15.7 S 105.9 E 994 30 Gales in SE quadrant 08 APR 24 1800 17.0 S 105.5 E 996 30 Gales in southern quads 08 APR 25 0000 17.9 S 105.1 E 998 30 No gales/Final warning Note: JTWC position at 23/1800 UTC was 12.8S/106.9E. ************************************************************************* Storm Name: DURGA Cyclone Number: 29S Basin: AUW (System named by Jakarta, Indonesia, TCWC) Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 08 APR 22 0600 8.0 S 90.3 E 30 Based on SAB bulletins 08 APR 22 1200 8.0 S 92.3 E 30 " 08 APR 22 1800 8.6 S 93.8 E 35 JTWC warning 08 APR 23 0000 8.8 S 94.8 E 35 Based on SAB bulletins 08 APR 23 0600 9.0 S 96.3 E 40 JTWC warning 08 APR 23 1200 9.7 S 96.7 E 40 Based on SAB bulletins 08 APR 23 1800 9.9 S 96.9 E 988 40 40 Jakarta warning 08 APR 24 0000 10.1 S 98.1 E 990 40 Perth warnings 08 APR 24 0600 10.6 S 99.0 E 992 35 35 08 APR 24 1200 11.3 S 99.4 E 992 35 08 APR 24 1800 11.9 S 99.6 E 992 35 08 APR 25 0000 12.4 S 100.0 E 996 30 Final Perth warning 08 APR 25 0230 12.8 S 100.1 E 30 SAB bulletin/See note 08 APR 25 0830 13.6 S 99.9 E 30 SAB satellite bulletin Note: A QuikScat pass at 24/2350 UTC showed maximum winds of 30 kts in rain-free areas. ************************************************************************* ************************************************************************* 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. Systems Tracked --------------- Tropical Depression (15F) 04 - 07 Apr Tropical Depression (16F / 27P) 17 - 19 Apr ************************************************************************* Storm Name: None Cyclone Number: None Basin: SPA Fiji Tropical Disturbance Number: 15F Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 08 APR 04 1600 15.5 S 159.0 E 1006 20 08 APR 04 2300 15.7 S 159.2 E 1005 25 08 APR 05 0600 16.5 S 160.2 E 1005 25 08 APR 05 1800 18.5 S 166.0 E 1002 30 Perip. gales NE to S 08 APR 06 0000 19.8 S 165.4 E 1005 30 " 08 APR 06 0600 20.6 S 167.2 E 1002 30 Perip. gales S semi. 08 APR 06 2100 23.0 S 170.5 E 1002 30 08 APR 07 0600 25.2 S 174.3 E 1004 25 Note: The Brisbane Tropical Cyclone Outlook for the Coral Sea issued on 6 April referred to this system as a subtropical depression. I received no satellite fix bulletins on this system. ************************************************************************* Storm Name: None Cyclone Number: 27P Basin: SPA Fiji Tropical Disturbance Number: 16F Date Time Lat Lon Cent MSW MSW Remarks (GMT) Press 1-min 10-min (mb) (kts) (kts) ------------------------------------------------------------------------- 08 APR 17 1800 14.2 S 160.0 E 1000 30 Perip. gales SW to NW 08 APR 18 0000 14.9 S 162.3 E 1000 35 30 JTWC: 15.2S/160.8E 08 APR 18 0600 15.2 S 163.4 E 998 30 Perip. gales NE to SW 08 APR 18 1200 16.5 S 163.4 E 998 35 30 JTWC: 17.0S/164.0E 08 APR 18 1800 17.4 S 163.8 E 998 30 Perip. gales NE to SW 08 APR 19 0000 18.8 S 166.0 E 1000 35 30 Perip. gales NE to SE 08 APR 19 0600 19.5 S 167.0 E 1000 30 " 08 APR 19 1200 21.4 S 169.2 E 1004 30 " 08 APR 19 1800 22.0 S 170.0 E 1004 30 " 08 APR 19 2300 24.5 S 173.0 E 1000 30 No gales mentioned Note: Dvorak ratings from CPHC and Brisbane reached T3.0/3.0 early on the 18th. JTWC's ratings peaked at T2.5/2.5 at 17/2330 UTC and were coming down slightly by 18/0530 UTC. The highest noted from SAB was T2.0/2.0. The satellite intensity estimates from CPHC and Brisbane seem to support this system being a minimal "10-min avg" tropical cyclone. ************************************************************************* ************************************************************************* !!!!!! 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 SIGNIFICANT CONTRIBUTIONS BY: Michael V. Padua michaelpadua@hotmail.com webmaster@typhoon2000.ph ************************************************************************* ************************************************************************* ************************************************************************* Posted: 05.06.08 / Typhoon2000.ph, Typhoon2000.com