Cyclone Alvin:Bertie (2006)
Cyclone Alvin:Bertie reached Category 4 in the South Indian between November 18, 2005 and December 3, 2005, with a lowest pressure of 927 mb.
Track and intensity
The whole track of Cyclone Alvin:Bertie, colored by strength, with the other storms of the 2006 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
- South Indian
- Dates
- November 18, 2005 to December 3, 2005
- Peak strength
- Category 4, 115 kt (132 mph)
- Lowest pressure
- 927 mb (27.37 inHg)
- Landfall
- No; closest approach 478 km (297 mi)
- Accumulated cyclone energy
- 18.2
- Identifier
- SH032006
Deaths and damage
No source this site reads carries a casualty or damage figure for this storm.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Nov 18, 06:00 | 3.7S 95.1E | 15 kt | 1006 mb | Disturbance |
| Nov 18, 12:00 | 4.3S 94.6E | 15 kt | 1006 mb | Disturbance |
| Nov 18, 18:00 | 5.0S 94.3E | 15 kt | 1006 mb | Disturbance |
| Nov 19, 00:00 | 5.8S 94.2E | 25 kt | 1002 mb | Tropical depression |
| Nov 19, 06:00 | 6.5S 94.1E | 25 kt | 1002 mb | Tropical depression |
| Nov 19, 12:00 | 7.1S 93.9E | 30 kt | 1000 mb | Tropical depression |
| Nov 19, 18:00 | 7.4S 93.9E | 40 kt | 994 mb | Tropical storm |
| Nov 20, 00:00 | 7.7S 93.9E | 45 kt | 991 mb | Tropical storm |
| Nov 20, 06:00 | 8.1S 93.7E | 50 kt | 987 mb | Tropical storm |
| Nov 20, 12:00 | 8.4S 93.5E | 50 kt | 987 mb | Tropical storm |
| Nov 20, 18:00 | 8.7S 93.3E | 55 kt | 984 mb | Tropical storm |
| Nov 21, 00:00 | 9.0S 92.9E | 65 kt | 976 mb | Typhoon |
| Nov 21, 06:00 | 9.3S 92.4E | 75 kt | 967 mb | Typhoon |
| Nov 21, 12:00 | 9.8S 92.0E | 75 kt | 967 mb | Typhoon |
| Nov 21, 18:00 | 10.3S 91.6E | 80 kt | 963 mb | Typhoon |
| Nov 22, 00:00 | 10.9S 91.1E | 80 kt | 963 mb | Typhoon |
| Nov 22, 06:00 | 11.5S 90.8E | 80 kt | 963 mb | Typhoon |
| Nov 22, 12:00 | 11.9S 90.5E | 90 kt | 954 mb | Typhoon |
| Nov 22, 18:00 | 12.2S 90.4E | 105 kt | 938 mb | Typhoon |
| Nov 23, 00:00 | 12.5S 90.3E | 115 kt | 927 mb | Typhoon |
| Nov 23, 06:00 | 12.8S 90.3E | 115 kt | 927 mb | Typhoon |
| Nov 23, 12:00 | 13.3S 90.3E | 105 kt | 938 mb | Typhoon |
| Nov 23, 18:00 | 13.8S 90.1E | 105 kt | 938 mb | Typhoon |
| Nov 24, 00:00 | 14.2S 90.0E | 105 kt | 938 mb | Typhoon |
| Nov 24, 06:00 | 14.6S 89.9E | 105 kt | 938 mb | Typhoon |
| Nov 24, 12:00 | 14.8S 89.7E | 100 kt | 944 mb | Typhoon |
| Nov 24, 18:00 | 14.8S 89.4E | 100 kt | 944 mb | Typhoon |
| Nov 25, 00:00 | 14.5S 89.0E | 90 kt | 954 mb | Typhoon |
| Nov 25, 06:00 | 14.4S 88.6E | 65 kt | 976 mb | Typhoon |
| Nov 25, 12:00 | 14.3S 88.2E | 65 kt | 976 mb | Typhoon |
| Nov 25, 18:00 | 14.1S 87.8E | 55 kt | 984 mb | Tropical storm |
| Nov 26, 00:00 | 14.0S 87.2E | 45 kt | 991 mb | Tropical storm |
| Nov 26, 06:00 | 13.9S 86.6E | 45 kt | 991 mb | Tropical storm |
| Nov 26, 12:00 | 13.7S 86.0E | 40 kt | 994 mb | Tropical storm |
| Nov 26, 18:00 | 13.4S 85.4E | 35 kt | 997 mb | Tropical storm |
| Nov 27, 00:00 | 13.1S 84.8E | 25 kt | 1002 mb | Tropical depression |
| Nov 27, 06:00 | 12.9S 84.2E | 25 kt | 1002 mb | Tropical depression |
| Nov 27, 12:00 | 12.7S 83.7E | 25 kt | 1002 mb | Tropical depression |
| Nov 27, 18:00 | 12.5S 83.4E | 25 kt | 1002 mb | Tropical depression |
| Nov 28, 00:00 | 12.4S 83.1E | 25 kt | 1002 mb | Tropical depression |
| Nov 28, 06:00 | 12.7S 82.8E | 25 kt | 1002 mb | Tropical depression |
| Nov 28, 12:00 | 12.9S 82.2E | 25 kt | 1002 mb | Tropical depression |
| Nov 28, 18:00 | 12.3S 81.6E | 25 kt | 1002 mb | Tropical depression |
| Nov 29, 00:00 | 11.7S 80.9E | 25 kt | 1002 mb | Tropical depression |
| Nov 29, 06:00 | 11.0S 80.3E | 25 kt | 1002 mb | Tropical depression |
| Nov 29, 12:00 | 10.4S 80.1E | 20 kt | 1004 mb | Tropical storm |
| Nov 29, 18:00 | 9.5S 79.7E | 20 kt | 1004 mb | Tropical storm |
| Nov 30, 00:00 | 8.8S 79.3E | 20 kt | 1004 mb | Tropical storm |
| Nov 30, 06:00 | 8.1S 78.9E | 20 kt | 1004 mb | Tropical storm |
| Nov 30, 12:00 | 7.8S 78.4E | 20 kt | 1004 mb | Tropical storm |
| Nov 30, 18:00 | 7.8S 78.0E | 20 kt | 1004 mb | Tropical storm |
| Dec 1, 00:00 | 7.9S 77.5E | 20 kt | 1004 mb | Tropical storm |
| Dec 1, 06:00 | 8.1S 77.0E | 20 kt | 1004 mb | Tropical storm |
| Dec 1, 12:00 | 8.3S 76.3E | 20 kt | 1004 mb | Tropical storm |
| Dec 1, 18:00 | 8.5S 75.0E | 20 kt | 1004 mb | Tropical storm |
| Dec 2, 00:00 | 8.7S 73.6E | 20 kt | 1005 mb | Disturbance |
| Dec 2, 06:00 | 8.9S 72.2E | 20 kt | 1005 mb | Disturbance |
| Dec 2, 12:00 | 9.1S 70.8E | 1006 mb | Disturbance | |
| Dec 2, 18:00 | 9.2S 70.0E | 1006 mb | Disturbance | |
| Dec 3, 00:00 | 9.4S 69.0E | 1007 mb | Disturbance | |
| Dec 3, 06:00 | 9.5S 68.1E | 1007 mb | Disturbance |
Other South Indian storms of 2006
- Unnamed tropical stormSouth Indian · 2006
- Unnamed tropical stormSouth Indian · 2006
- Unnamed tropical stormSouth Indian · 2006
- Tropical Storm ClareSouth Indian · 2006
- Tropical Storm DarylSouth Indian · 2006
- Cyclone BoloetseSouth Indian · 2006
- Unnamed tropical stormSouth Indian · 2006
- Cyclone CarinaSouth Indian · 2006
- Tropical Storm EmmaSouth Indian · 2006
- Tropical Storm DiwaSouth Indian · 2006
- Cyclone FloydSouth Indian · 2006
- Cyclone GlendaSouth Indian · 2006
- Tropical Storm HubertSouth Indian · 2006
- Tropical Storm EliaSouth Indian · 2006
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.