Timeline of the 2008 Pacific typhoon season

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The 2008 Pacific typhoon season has no official bounds; it runs year-round in 2008, but most tropical cyclones tend to form in the northwestern Pacific Ocean between May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.


Contents: (top) • Jan • Feb • Mar • Apr • May • Jun • Jul • Aug • Sept • Oct • Nov • Dec

[edit] Introduction

[edit] Chart

The above chart documents the tropical cyclone activity in the Western North Pacific basin. Storms not named by the JMA are indicated in inverted commas. The maximum strength of each cyclone in the chart is denoted by different colours as stipulated in the legend below the chart. This tropical cyclone scale makes use of the JMA's official 10-minute average sustained wind speeds for storms below typhoon intensity (≤117 km/h, ≤73 mph). When a storm reaches typhoon intensity on the JMA scale, the Saffir-Simpson Hurricane Scale is used instead, which makes use of the JTWC's unofficial 1-minute average sustained wind speeds. Note that tropical depressions as tracked by the JMA are not reflected; the 'tropical depression' classification above is used for all storms designated by the JTWC or PAGASA, but not officially named by the JMA, and thus did not officially attain tropical storm intensity (63 km/h, 39 mph).

[edit] Timeline

The following timeline documents the major events in the season with regards to tropical cyclone formation, strengthening, weakening, landfall, extratropicality and dissipation. Please note that the Japan Meteorological Agency (JMA) is considered to be official for this tropical cyclone basin; Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) is only responsible for Philippine warnings while the Joint Typhoon Warning Center (JTWC) releases advisories for Micronesia (including the Mariana Islands) and U.S. military interests in Japan and South Korea.

All landfalls are bolded and referred to in JMA terms. The JTWC storms are referred to numerically, to avoid confusion, as the JTWC sometimes recognises a storm at a different intensity compared to the JMA. For the purposes of the timeline, all events stemming from JTWC advisories will be documented by time of issuance, rather than by the operational time of observed information (3 hours before). It should be noted that the timeline does not deal with the end of PAGASA-monitored storms; if the JTWC or the JMA did not monitor such a storm it should be assumed that the storm did not cause major damage or make landfall, and simply dissipated or left the area of jurisdiction of PAGASA.

[edit] Timeline

[edit] January

January 13
0900 UTC - The JTWC designates 90W.INVEST, west-southwest of Manila, Philippines as Tropical Depression 01W.[1]
January 14
0300 UTC - The JTWC upgrades Tropical Depression 01W to Tropical Storm 01W.[2]
2100 UTC - The JTWC downgrades Tropical Storm 01W to a tropical depression.[3]
January 15
0900 UTC - The JTWC issues its final advisory on Tropical Depression 01W.[4]
2100 UTC - The JTWC re-issues advisories on Tropical Depression 01W.[5]
January 16
1500 UTC - The JTWC issues its final advisory on Tropical Depression 01W.[6]

[edit] April

April 14
0000 UTC - PAGASA designates JTWC's 99W.INVEST, about 120 km east of Dumaguete City, Philippines, as Tropical Depression Ambo.[7]
0300 UTC - JTWC designates Tropical Depression Ambo (99W) as Tropical Depression 02W.[8]
1200 UTC - JTWC upgrades Tropical Depression 02W to Tropical Storm 02W.[9]
April 15
0600 UTC - The JMA designates Tropical Storm 02W as Tropical Storm Neoguri.[10]
April 16
0000 UTC - The JMA upgrades Tropical Storm Neoguri to Severe Tropical Storm Neoguri.[11]
0900 UTC - The JTWC upgrades Tropical Storm 02W (Neoguri) to Typhoon 02W (Neoguri).[12]
1200 UTC - The JMA upgrades Severe Tropical Storm Neoguri to Typhoon Neoguri.[13]
April 19
0000 UTC - The JMA downgrades Typhoon Neoguri to a severe tropical storm.[14]
0900 UTC - The JTWC downgrades Typhoon 02W (Neoguri) to a tropical storm.[15]
0600 UTC - The JMA downgrades Severe Tropical Storm Neoguri to a tropical storm.[16]
c. 1200 UTC - Tropical Storm Neoguri makes landfall on Guangdong province in southern China.[17]
1500 UTC - The JTWC issues its last advisory on Tropical Storm 02W (Neoguri), inland near Hong Kong, China.[18]
1800 UTC - The JMA downgrades Tropical Storm Neoguri to a tropical depression and issues its final advisory.[19]


[edit] May

May 7
0300 UTC - PAGASA designates JTWC's 94W.INVEST, 790 km east of Mindanao, Philippines, as Tropical Depression Butchoy.[20]
0900 UTC - The JTWC designates Tropical Depression Butchoy as Tropical Depression 03W.[21]
1800 UTC - JMA designates Tropical Depression 03W as Tropical Storm Rammasun[22]
May 8
1800 UTC - JMA upgrades Tropical Storm Rammasun to Severe Tropical Storm Rammasun.[23]
May 9
0300 UTC - The JTWC upgrades Tropical Storm 03W (Rammasun) to Typhoon 03W (Rammasun).
0600 UTC - JMA upgrades Severe Tropical Storm Rammasun to Typhoon Rammasun.[24]
May 10
0900 UTC - The JTWC upgrades Typhoon 03W (Rammasun) to Super Typhoon 03W (Rammasun).
May 11
0900 UTC - The JTWC downgrades Super Typhoon 03W (Rammasun) to a typhoon.[25]
May 12
1800 UTC - JMA downgrades Typhoon Rammasun to a severe tropical storm.[26]
2100 UTC - The JTWC issues its final advisory on Tropical Storm 03W (Rammasun) as it begins to transist into an extratropical system.[27]
May 13
0600 UTC - JMA issues its final advisory on Severe Tropical Storm Rammasun as it fully transists into a extratropical low.[28]
May 14
0900 UTC - PAGASA designates JTWC's 95W.INVEST, an area of low pressure west of Luzon, as Tropical Depression Cosme.[29]
0900 UTC - JTWC designates 96W.INVEST, northeast of Manila, Philippines, as Tropical Depression 04W.[30]
May 15
1200 UTC - JMA designates Tropical Depression 04W as Tropical Storm Matmo.[31]
1500 UTC - PAGASA designates Tropical Storm Matmo as Tropical Depression Dindo.[32]
2100 UTC - The JTWC designates Tropical Depression Cosme, west-southwest of Manila, Philippines as Tropical Depression 05W.[33]
2100 UTC - The JTWC upgrades Tropical Depression 04W (Matmo) to Tropical Storm 04W (Matmo).[34]
May 16
0600 UTC - JMA designates Tropical Depression 05W as Tropical Storm Halong.[35]
0900 UTC - The JTWC upgrades Tropical Depression 05W to Tropical Storm 05W.[36]
0900 UTC - The JTWC issues its final advisory on Tropical Storm 04W (Matmo) as it becomes extratropical.[37]
May 17
0000 UTC - JMA upgrades Tropical Storm Halong to Severe Tropical Storm Halong.[38]
0000 UTC - JMA issues its last advisory on Tropical Storm Matmo as it becomes extratropical.[39]
0900 UTC - The JTWC upgrades Tropical Storm 05W (Halong) to Typhoon 05W (Halong).[40]
0930 UTC - PAGASA reports that Severe Tropical Storm Halong has made landfall in Western Pangasinan.[41]
2100 UTC - The JTWC downgrades Typhoon 05W (Halong) to a tropical storm.[42]
May 18
0000 UTC - JMA downgrades Severe Tropical Storm Halong to a tropical storm.[43]
1800 UTC - JMA upgrades Tropical Storm Halong to Severe Tropical Storm Halong.[44]
May 19
1800 UTC - JMA downgrades Severe Tropical Storm Halong to a tropical storm.[45]
2130 UTC - PAGASA issues its final advisory on Tropical Strom Cosme (Halong).[46]
May 20
0300 UTC - The JTWC issues its final advisory on Tropical Storm 05W (Halong).[47]\
1200 UTC - JMA issues its last advisory on Tropical Storm Halong as it becomes extratropical.[48]

[edit] References

  1. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008011309-WTPN.PGTW
  2. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008011403-WTPN.PGTW
  3. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008011421-WTPN.PGTW
  4. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008011509-WTPN.PGTW
  5. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008011521-WTPN.PGTW
  6. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008011615-WTPN.PGTW
  7. ^ http://i31.tinypic.com/fut0m0.jpg
  8. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008041403-WTPN.PGTW
  9. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008041415-WTPN.PGTW
  10. ^ http://www.webcitation.org/5X5nrYZTc
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  12. ^ http://www.webcitation.org/5X8gYUYBy
  13. ^ http://www.webcitation.org/5X7hhM1eS
  14. ^ http://www.webcitation.org/5XDP8li97
  15. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008041903-WTPN.PGTW
  16. ^ http://www.webcitation.org/5XDPBPPKV
  17. ^ http://www.webcitation.org/5XAB9ChDS
  18. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008041915-WTPN.PGTW
  19. ^ http://www.webcitation.org/5XDPFsOx6
  20. ^ http://www.webcitation.org/5XdCVLzNL
  21. ^ http://www.webcitation.org/5XdNZ2sk5
  22. ^ http://www.webcitation.org/5Xe2RCOx2
  23. ^ http://www.webcitation.org/5XfX2S6cN
  24. ^ http://www.webcitation.org/5XgJxLEFm
  25. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008051109-WTPN.PGTW
  26. ^ http://www.webcitation.org/5XldvfFqS
  27. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008051221-WTPN.PGTW
  28. ^ http://www.webcitation.org/5XmO7zOpC
  29. ^ http://www.webcitation.org/5Xo4By4Mr
  30. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008051409-WTPN.PGTW
  31. ^ http://www.webcitation.org/5Xpt2LUiw
  32. ^ http://www.webcitation.org/5XqHIbyaw
  33. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008051515-WTPN.PGTW
  34. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008051521-WTPN.PGTW
  35. ^ http://www.webcitation.org/5Xr4cy6DM
  36. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008051609-WTPN.PGTW
  37. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008051609-WTPN.PGTW
  38. ^ http://www.webcitation.org/5XsAXS7VK
  39. ^ http://www.webcitation.org/5XsBgVpBD
  40. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008051709-WTPN.PGTW
  41. ^ http://www.webcitation.org/5Xsse18ID
  42. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008051721-WTPN.PGTW
  43. ^ http://www.webcitation.org/5XzQRiHDq
  44. ^ http://www.webcitation.org/5XutCwKnA
  45. ^ http://www.webcitation.org/5XzcMseib
  46. ^ http://www.webcitation.org/5Xwc4PFnd
  47. ^ ftp://ftp.met.fsu.edu/pub/weather/tropical/GuamStuff/2008052003-WTPN.PGTW
  48. ^ http://www.webcitation.org/5XzQl87nt

[edit] See also

Tropical cyclones Portal
Preceded by
2007		 Pacific typhoon seasons timelines
2008		 Succeeded by
2009