Cyclone Billy (2009)
Cyclone Billy reached Category 3 in the South Indian between December 16, 2008 and January 4, 2009, with a lowest pressure of 941 mb, and made landfall.
Track and intensity
The whole track of Cyclone Billy, 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
- South Indian
- Dates
- December 16, 2008 to January 4, 2009
- Peak strength
- Category 3, 110 kt (127 mph)
- Lowest pressure
- 941 mb (27.79 inHg)
- Landfall
- Yes
- Accumulated cyclone energy
- 14.0
- Identifier
- SH052009
Deaths and damage
No source this site reads carries a casualty or damage figure for this storm.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Dec 16, 00:00 | 10.6S 127.7E | 15 kt | 1004 mb | Tropical storm |
| Dec 16, 06:00 | 11.0S 127.5E | 20 kt | 1000 mb | Tropical storm |
| Dec 16, 12:00 | 11.3S 127.3E | 20 kt | 1000 mb | Tropical storm |
| Dec 16, 18:00 | 11.8S 127.3E | 20 kt | 1000 mb | Tropical storm |
| Dec 17, 00:00 | 12.3S 127.3E | 20 kt | 1002 mb | Tropical storm |
| Dec 17, 06:00 | 12.8S 127.4E | 20 kt | 1007 mb | Disturbance |
| Dec 17, 12:00 | 13.0S 127.7E | 20 kt | 1007 mb | Disturbance |
| Dec 17, 18:00 | 13.4S 127.9E | 20 kt | 1007 mb | Disturbance |
| Dec 18, 00:00 | 13.7S 128.2E | 25 kt | 1004 mb | Tropical depression |
| Dec 18, 06:00 | 14.0S 128.6E | 30 kt | 1000 mb | Tropical depression |
| Dec 18, 12:00 | 14.5S 128.8E | 30 kt | 1000 mb | Tropical depression |
| Dec 18, 18:00 | 14.8S 128.8E | 35 kt | 996 mb | Tropical storm |
| Dec 19, 00:00 | 14.7S 128.7E | 45 kt | 989 mb | Tropical storm |
| Dec 19, 06:00 | 14.6S 128.6E | 45 kt | 989 mb | Tropical storm |
| Dec 19, 12:00 | 14.7S 128.5E | 45 kt | 989 mb | Tropical storm |
| Dec 19, 18:00 | 14.9S 128.3E | 45 kt | 989 mb | Tropical storm |
| Dec 20, 00:00 | 14.9S 127.9E | 35 kt | 996 mb | Tropical storm |
| Dec 20, 06:00 | 15.1S 127.4E | 25 kt | 1004 mb | Tropical depression |
| Dec 20, 12:00 | 15.3S 126.9E | 25 kt | 1004 mb | Tropical depression |
| Dec 20, 18:00 | 15.3S 126.5E | 25 kt | 1004 mb | Tropical depression |
| Dec 21, 00:00 | 15.2S 126.1E | 25 kt | 1004 mb | Tropical depression |
| Dec 21, 06:00 | 15.2S 125.8E | 25 kt | 1004 mb | Tropical depression |
| Dec 21, 12:00 | 15.3S 125.4E | 25 kt | 1004 mb | Tropical depression |
| Dec 21, 18:00 | 15.3S 124.9E | 30 kt | 1000 mb | Tropical depression |
| Dec 22, 00:00 | 15.5S 124.3E | 40 kt | 993 mb | Tropical storm |
| Dec 22, 06:00 | 15.9S 123.8E | 40 kt | 993 mb | Tropical storm |
| Dec 22, 12:00 | 16.6S 123.5E | 40 kt | 993 mb | Tropical storm |
| Dec 22, 18:00 | 16.7S 122.9E | 40 kt | 993 mb | Tropical storm |
| Dec 23, 00:00 | 17.2S 122.2E | 40 kt | 993 mb | Tropical storm |
| Dec 23, 06:00 | 17.8S 121.4E | 40 kt | 993 mb | Tropical storm |
| Dec 23, 12:00 | 17.8S 120.8E | 50 kt | 985 mb | Tropical storm |
| Dec 23, 18:00 | 17.9S 120.3E | 55 kt | 982 mb | Tropical storm |
| Dec 24, 00:00 | 17.9S 119.8E | 75 kt | 967 mb | Typhoon |
| Dec 24, 06:00 | 17.8S 119.2E | 90 kt | 956 mb | Typhoon |
| Dec 24, 12:00 | 17.8S 118.6E | 105 kt | 944 mb | Typhoon |
| Dec 24, 18:00 | 17.6S 117.9E | 110 kt | 941 mb | Typhoon |
| Dec 25, 00:00 | 17.5S 117.3E | 105 kt | 944 mb | Typhoon |
| Dec 25, 06:00 | 17.3S 116.6E | 105 kt | 944 mb | Typhoon |
| Dec 25, 12:00 | 16.9S 116.0E | 105 kt | 944 mb | Typhoon |
| Dec 25, 18:00 | 16.6S 115.3E | 95 kt | 952 mb | Typhoon |
| Dec 26, 00:00 | 16.2S 114.7E | 85 kt | 959 mb | Typhoon |
| Dec 26, 06:00 | 15.8S 114.1E | 80 kt | 963 mb | Typhoon |
| Dec 26, 12:00 | 15.6S 113.8E | 75 kt | 967 mb | Typhoon |
| Dec 26, 18:00 | 15.4S 113.6E | 70 kt | 970 mb | Typhoon |
| Dec 27, 00:00 | 15.3S 113.3E | 55 kt | 982 mb | Tropical storm |
| Dec 27, 06:00 | 15.3S 112.9E | 55 kt | 982 mb | Tropical storm |
| Dec 27, 12:00 | 15.2S 112.8E | 45 kt | 989 mb | Tropical storm |
| Dec 27, 18:00 | 15.0S 112.7E | 45 kt | 989 mb | Tropical storm |
| Dec 28, 00:00 | 15.0S 112.9E | 40 kt | 993 mb | Tropical storm |
| Dec 28, 06:00 | 15.5S 112.8E | 30 kt | 1000 mb | Tropical depression |
| Dec 28, 12:00 | 16.1S 112.7E | 30 kt | 1000 mb | Tropical depression |
| Dec 28, 18:00 | 16.4S 112.2E | 25 kt | 1004 mb | Tropical depression |
| Dec 29, 00:00 | 16.5S 111.3E | 25 kt | 1004 mb | Tropical depression |
| Dec 29, 06:00 | 17.0S 110.6E | 25 kt | 1004 mb | Tropical depression |
| Dec 29, 12:00 | 17.2S 109.6E | 25 kt | 1004 mb | Tropical depression |
| Dec 29, 18:00 | 17.1S 108.8E | 25 kt | 1004 mb | Tropical depression |
| Dec 30, 00:00 | 16.9S 108.0E | 25 kt | 1004 mb | Tropical depression |
| Dec 30, 06:00 | 16.7S 107.7E | 20 kt | 1007 mb | Tropical depression |
| Dec 30, 12:00 | 16.5S 107.3E | 20 kt | 1007 mb | Disturbance |
| Dec 30, 18:00 | 16.4S 106.9E | 20 kt | 1007 mb | Disturbance |
| Dec 31, 00:00 | 16.2S 106.3E | 20 kt | 1007 mb | Disturbance |
| Dec 31, 06:00 | 16.3S 105.4E | 20 kt | 1007 mb | Disturbance |
| Dec 31, 12:00 | 16.0S 104.5E | 20 kt | 1007 mb | Disturbance |
| Dec 31, 18:00 | 15.6S 103.7E | 20 kt | 1007 mb | Disturbance |
| Jan 1, 00:00 | 15.2S 102.5E | 20 kt | 1007 mb | Disturbance |
| Jan 1, 06:00 | 15.1S 101.3E | 20 kt | 1007 mb | Disturbance |
| Jan 1, 12:00 | 15.0S 100.1E | 20 kt | 1007 mb | Disturbance |
| Jan 1, 18:00 | 14.6S 99.2E | 20 kt | 1007 mb | Disturbance |
| Jan 2, 00:00 | 14.3S 98.2E | 20 kt | 1007 mb | Disturbance |
| Jan 2, 06:00 | 14.0S 97.2E | 20 kt | 1007 mb | Disturbance |
| Jan 2, 12:00 | 13.8S 96.0E | 20 kt | 1007 mb | Disturbance |
| Jan 2, 18:00 | 13.4S 94.6E | 20 kt | 1007 mb | Disturbance |
| Jan 3, 00:00 | 13.0S 93.1E | 20 kt | 1007 mb | Disturbance |
| Jan 3, 06:00 | 12.7S 91.8E | 20 kt | 1007 mb | Disturbance |
| Jan 3, 12:00 | 12.6S 91.2E | 20 kt | 1007 mb | Disturbance |
| Jan 3, 18:00 | 12.5S 90.3E | 20 kt | 1007 mb | Disturbance |
| Jan 4, 00:00 | 12.4S 89.0E | 15 kt | 1010 mb | Disturbance |
Other South Indian storms of 2009
- Tropical Storm AsmaSouth Indian · 2009
- Tropical Storm BernardSouth Indian · 2009
- Tropical Storm AnikaSouth Indian · 2009
- Tropical Storm CindaSouth Indian · 2009
- Tropical Storm DongoSouth Indian · 2009
- Tropical Storm EricSouth Indian · 2009
- Cyclone FaneleSouth Indian · 2009
- Tropical Storm DominicSouth Indian · 2009
- Cyclone GaelSouth Indian · 2009
- Tropical Storm FreddySouth Indian · 2009
- Cyclone HinaSouth Indian · 2009
- Tropical Storm GabrielleSouth Indian · 2009
- Unnamed tropical stormSouth Indian · 2009
- Cyclone IlsaSouth Indian · 2009
- Cyclone IzildaSouth Indian · 2009
- Cyclone JadeSouth Indian · 2009 · 9 deaths
- Tropical Storm KirrilySouth Indian · 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.