Typhoon Roke (2011)
Typhoon Roke reached Category 4 in the Western Pacific between September 9, 2011 and September 24, 2011, with a lowest pressure of 937 mb, and made landfall.
Track and intensity
The whole track of Typhoon Roke, colored by strength, with the other storms of the 2011 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 9, 2011 to September 24, 2011
- Peak strength
- Category 4, 115 kt (132 mph)
- Lowest pressure
- 937 mb (27.67 inHg)
- Landfall
- Yes
- Accumulated cyclone energy
- 13.6
- Tropical-storm-force wind reached
- 220 nmi (407 km, 253 mi) from the center at its widest
- Hurricane-force wind reached
- 65 nmi (120 km, 75 mi) from the center at its widest
- Eyewall radius at its peak
- 25 nmi (46 km, 29 mi)
- Overall size
- 280 nmi (519 km, 322 mi) to the outermost closed isobar
- Fastest the center moved
- 45 kt (52 mph)
- Identifier
- WP182011
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 9, 12:00 | 20.4N 144.5E | 1008 mb | Tropical storm | |
| Sep 9, 18:00 | 20.3N 143.6E | 1006 mb | Tropical storm | |
| Sep 10, 00:00 | 20.5N 140.2E | 20 kt | 1007 mb | Disturbance |
| Sep 10, 06:00 | 20.4N 139.5E | 20 kt | 1007 mb | Tropical depression |
| Sep 10, 12:00 | 20.4N 138.8E | 20 kt | 1007 mb | Tropical depression |
| Sep 10, 18:00 | 20.6N 138.1E | 20 kt | 1006 mb | Disturbance |
| Sep 11, 00:00 | 20.9N 137.4E | 20 kt | 1006 mb | Disturbance |
| Sep 11, 06:00 | 21.0N 136.5E | 20 kt | 1006 mb | Disturbance |
| Sep 11, 12:00 | 21.0N 136.1E | 20 kt | 1007 mb | Disturbance |
| Sep 11, 18:00 | 21.1N 135.8E | 20 kt | 1007 mb | Disturbance |
| Sep 12, 00:00 | 21.4N 135.8E | 25 kt | 1004 mb | Tropical depression |
| Sep 12, 06:00 | 21.6N 135.8E | 25 kt | 1004 mb | Tropical depression |
| Sep 12, 12:00 | 21.8N 135.8E | 25 kt | 1004 mb | Tropical depression |
| Sep 12, 18:00 | 21.9N 135.9E | 25 kt | 1004 mb | Tropical depression |
| Sep 13, 00:00 | 22.0N 136.0E | 25 kt | 1004 mb | Tropical depression |
| Sep 13, 06:00 | 22.3N 136.9E | 30 kt | 1000 mb | Tropical depression |
| Sep 13, 12:00 | 22.8N 137.7E | 30 kt | 1000 mb | Tropical depression |
| Sep 13, 18:00 | 23.6N 138.2E | 30 kt | 1000 mb | Tropical depression |
| Sep 14, 00:00 | 24.3N 137.5E | 30 kt | 1000 mb | Tropical depression |
| Sep 14, 06:00 | 24.6N 136.8E | 30 kt | 1000 mb | Tropical depression |
| Sep 14, 12:00 | 25.2N 135.3E | 30 kt | 1000 mb | Tropical depression |
| Sep 14, 18:00 | 25.6N 133.8E | 30 kt | 1000 mb | Tropical depression |
| Sep 15, 00:00 | 25.3N 132.5E | 30 kt | 1000 mb | Tropical depression |
| Sep 15, 06:00 | 25.8N 131.6E | 30 kt | 1000 mb | Tropical depression |
| Sep 15, 12:00 | 25.9N 130.9E | 30 kt | 1000 mb | Tropical depression |
| Sep 15, 18:00 | 26.2N 130.4E | 35 kt | 996 mb | Tropical storm |
| Sep 16, 00:00 | 26.3N 130.1E | 35 kt | 996 mb | Tropical storm |
| Sep 16, 06:00 | 26.4N 129.8E | 40 kt | 993 mb | Tropical storm |
| Sep 16, 12:00 | 26.1N 129.6E | 40 kt | 993 mb | Tropical storm |
| Sep 16, 18:00 | 25.7N 129.5E | 40 kt | 993 mb | Tropical storm |
| Sep 17, 00:00 | 25.3N 129.8E | 50 kt | 985 mb | Tropical storm |
| Sep 17, 06:00 | 24.8N 129.9E | 55 kt | 982 mb | Tropical storm |
| Sep 17, 12:00 | 24.8N 130.5E | 60 kt | 978 mb | Tropical storm |
| Sep 17, 18:00 | 24.9N 130.7E | 65 kt | 974 mb | Typhoon |
| Sep 18, 00:00 | 25.4N 131.1E | 65 kt | 974 mb | Typhoon |
| Sep 18, 06:00 | 25.9N 130.7E | 60 kt | 978 mb | Tropical storm |
| Sep 18, 12:00 | 26.2N 130.4E | 60 kt | 978 mb | Tropical storm |
| Sep 18, 18:00 | 26.3N 130.2E | 60 kt | 978 mb | Tropical storm |
| Sep 19, 00:00 | 26.7N 130.4E | 65 kt | 974 mb | Typhoon |
| Sep 19, 06:00 | 27.6N 130.5E | 70 kt | 970 mb | Typhoon |
| Sep 19, 12:00 | 28.2N 130.2E | 90 kt | 956 mb | Typhoon |
| Sep 19, 18:00 | 28.1N 131.0E | 100 kt | 948 mb | Typhoon |
| Sep 20, 00:00 | 29.0N 131.6E | 110 kt | 941 mb | Typhoon |
| Sep 20, 06:00 | 29.4N 132.5E | 110 kt | 941 mb | Typhoon |
| Sep 20, 12:00 | 30.3N 133.6E | 115 kt | 937 mb | Typhoon |
| Sep 20, 18:00 | 31.7N 134.6E | 115 kt | 937 mb | Typhoon |
| Sep 21, 00:00 | 33.0N 136.0E | 100 kt | 948 mb | Typhoon |
| Sep 21, 06:00 | 34.8N 137.8E | 75 kt | 967 mb | Typhoon |
| Sep 21, 12:00 | 37.3N 140.3E | 60 kt | 978 mb | Tropical storm |
| Sep 21, 18:00 | 40.7N 143.6E | 50 kt | 985 mb | Extratropical |
| Sep 22, 00:00 | 42.7N 146.6E | 60 kt | 980 mb | Mixed |
| Sep 22, 06:00 | 44.5N 149.0E | 982 mb | Extratropical | |
| Sep 22, 12:00 | 45.8N 151.2E | 984 mb | Extratropical | |
| Sep 22, 18:00 | 46.8N 152.9E | 988 mb | Extratropical | |
| Sep 23, 00:00 | 47.8N 155.6E | 992 mb | Extratropical | |
| Sep 23, 06:00 | 49.0N 159.4E | 996 mb | Extratropical | |
| Sep 23, 12:00 | 50.7N 163.8E | 996 mb | Extratropical | |
| Sep 23, 18:00 | 51.4N 167.7E | 998 mb | Extratropical | |
| Sep 24, 00:00 | 51.9N 172.5E | 1000 mb | Extratropical | |
| Sep 24, 06:00 | 51.9N 178.4E | 1000 mb | Extratropical | |
| Sep 24, 12:00 | 51.2N 185.4E | Extratropical |
Other Western Pacific storms of 2011
- Unnamed tropical depressionWestern Pacific · 2011
- Unnamed tropical depressionWestern Pacific · 2011
- Tropical Storm AereWestern Pacific · 2011
- Super Typhoon SongdaWestern Pacific · 2011
- Unnamed tropical depressionWestern Pacific · 2011
- Tropical Depression SarikaWestern Pacific · 2011
- Tropical Storm HaimaWestern Pacific · 2011
- Tropical Storm MeariWestern Pacific · 2011
- Typhoon Ma-OnWestern Pacific · 2011
- Tropical Depression TokageWestern Pacific · 2011
- Typhoon Nock-TenWestern Pacific · 2011
- Super Typhoon MuifaWestern Pacific · 2011
- Typhoon MerbokWestern Pacific · 2011
- Unnamed tropical depressionWestern Pacific · 2011
- Super Typhoon NanmadolWestern Pacific · 2011
- Tropical Storm TalasWestern Pacific · 2011
- Tropical Storm NoruWestern Pacific · 2011
- Tropical Storm KulapWestern Pacific · 2011
- Typhoon SoncaWestern Pacific · 2011
- Typhoon NesatWestern Pacific · 2011
- Tropical Storm HaitangWestern Pacific · 2011
- Super Typhoon NalgaeWestern Pacific · 2011
- Tropical Depression BanyanWestern Pacific · 2011
- Unnamed tropical depressionWestern Pacific · 2011
- Unnamed tropical depressionWestern Pacific · 2011
- Unnamed tropical depressionWestern Pacific · 2011
- Tropical Storm WashiWestern Pacific · 2011
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.