Typhoon Koppu (2009)
Typhoon Koppu reached Category 1 in the Western Pacific between September 11, 2009 and September 15, 2009, with a lowest pressure of 967 mb, and made landfall.
Track and intensity
The whole track of Typhoon Koppu, colored by strength, with the other storms of the 2009 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.
The storm
- Basin
- Western Pacific
- Dates
- September 11, 2009 to September 15, 2009
- Peak strength
- Category 1, 75 kt (86 mph)
- Lowest pressure
- 967 mb (28.56 inHg)
- Landfall
- Yes
- Accumulated cyclone energy
- 2.3
- Tropical-storm-force wind reached
- 130 nmi (241 km, 150 mi) from the center at its widest
- Hurricane-force wind reached
- 20 nmi (37 km, 23 mi) from the center at its widest
- Eyewall radius at its peak
- 20 nmi (37 km, 23 mi)
- Overall size
- 230 nmi (426 km, 265 mi) to the outermost closed isobar
- Fastest the center moved
- 18 kt (21 mph)
- Identifier
- WP162009
Deaths and damage
No source this site reads carries a casualty or damage figure for this storm.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Sep 11, 06:00 | 13.9N 129.6E | 15 kt | 1010 mb | Disturbance |
| Sep 11, 12:00 | 14.7N 128.4E | 20 kt | 1005 mb | Disturbance |
| Sep 11, 18:00 | 15.6N 127.2E | 20 kt | 1004 mb | Disturbance |
| Sep 12, 00:00 | 16.3N 125.6E | 20 kt | 1004 mb | Disturbance |
| Sep 12, 06:00 | 17.0N 124.2E | 20 kt | 1007 mb | Disturbance |
| Sep 12, 12:00 | 18.1N 123.7E | 20 kt | 1006 mb | Disturbance |
| Sep 12, 18:00 | 19.5N 122.5E | 20 kt | 1005 mb | Disturbance |
| Sep 13, 00:00 | 19.2N 120.2E | 30 kt | 1000 mb | Tropical depression |
| Sep 13, 06:00 | 19.1N 118.9E | 35 kt | 996 mb | Tropical storm |
| Sep 13, 12:00 | 19.4N 117.9E | 35 kt | 996 mb | Tropical storm |
| Sep 13, 18:00 | 19.7N 116.8E | 45 kt | 988 mb | Tropical storm |
| Sep 14, 00:00 | 19.9N 115.8E | 50 kt | 985 mb | Tropical storm |
| Sep 14, 06:00 | 20.5N 115.1E | 55 kt | 982 mb | Tropical storm |
| Sep 14, 12:00 | 21.0N 114.3E | 65 kt | 974 mb | Typhoon |
| Sep 14, 18:00 | 21.5N 113.2E | 75 kt | 967 mb | Typhoon |
| Sep 15, 00:00 | 22.1N 112.0E | 60 kt | 978 mb | Tropical storm |
| Sep 15, 06:00 | 22.7N 110.6E | 30 kt | 1000 mb | Tropical depression |
| Sep 15, 12:00 | 23.1N 109.6E | 20 kt | 1007 mb | Disturbance |
| Sep 15, 18:00 | 23.2N 108.7E | 1000 mb | Tropical storm |
Other Western Pacific storms of 2009
- Typhoon KujiraWestern Pacific · 2009
- Typhoon Chan-HomWestern Pacific · 2009
- Typhoon LinfaWestern Pacific · 2009
- Tropical Storm NangkaWestern Pacific · 2009
- Tropical Storm SoudelorWestern Pacific · 2009
- Unnamed tropical depressionWestern Pacific · 2009
- Typhoon MolaveWestern Pacific · 2009
- Tropical Storm GoniWestern Pacific · 2009
- Typhoon MorakotWestern Pacific · 2009
- Tropical Storm EtauWestern Pacific · 2009
- Typhoon VamcoWestern Pacific · 2009
- Typhoon KrovanhWestern Pacific · 2009
- Tropical Storm DujuanWestern Pacific · 2009
- Tropical Depression MujigaeWestern Pacific · 2009
- Super Typhoon Choi-WanWestern Pacific · 2009
- Typhoon KetsanaWestern Pacific · 2009
- Unnamed tropical depressionWestern Pacific · 2009
- Super Typhoon ParmaWestern Pacific · 2009
- Super Typhoon MelorWestern Pacific · 2009
- Tropical Storm NepartakWestern Pacific · 2009
- Super Typhoon LupitWestern Pacific · 2009
- Unnamed tropical depressionWestern Pacific · 2009
- Typhoon MirinaeWestern Pacific · 2009
- Unnamed tropical depressionWestern Pacific · 2009
- Unnamed tropical stormWestern Pacific · 2009
- Unnamed tropical depressionWestern Pacific · 2009
- Super Typhoon NidaWestern Pacific · 2009
- Unnamed tropical depressionWestern Pacific · 2009
- Unnamed tropical stormWestern Pacific · 2009
What this means
A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.
Sources
Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.