2010–11 South-West Indian Ocean cyclone season
| 2010–11 South-West Indian Ocean cyclone season | |
|---|---|
Season summary map
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| Seasonal boundaries | |
| First system formed | October 25, 2010 |
| Last system dissipated | April 16, 2011 |
| Strongest storm | |
| Name | Bingiza |
| • Maximum winds | 155 km/h (100 mph) (10-minute sustained) |
| • Lowest pressure | 957 hPa (mbar) |
| Seasonal statistics | |
| Total disturbances | 9 |
| Total depressions | 6 (record low, tied with 1975–76) |
| Total storms | 3 (record low, tied with 1982–83) |
| Tropical cyclones | 2 |
| Total fatalities | 34 total |
| Total damage | Unknown |
| Related articles | |
| Tropical depression (MFR) | |
| Tropical storm (SSHWS) | |
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| Duration | October 25 – October 29 |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min) 997 hPa (mbar) |
| Tropical cyclone (MFR) | |
| Category 1 tropical cyclone (SSHWS) | |
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| Duration | November 28 – December 2 (exited basin) |
|---|---|
| Peak intensity | 130 km/h (80 mph) (10-min) 974 hPa (mbar) |
| Tropical depression (MFR) | |
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| Duration | January 2 – January 3 |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min) 996 hPa (mbar) |
| Tropical cyclone (MFR) | |
| Category 3 tropical cyclone (SSHWS) | |
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| Duration | February 9 – February 17 |
|---|---|
| Peak intensity | 155 km/h (100 mph) (10-min) 957 hPa (mbar) |
| Moderate tropical storm (MFR) | |
| Tropical storm (SSHWS) | |
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| Duration | March 13 (Entered basin) – March 23 |
|---|---|
| Peak intensity | 75 km/h (45 mph) (10-min) 993 hPa (mbar) |
| Subtropical depression (MFR) | |
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| Duration | April 11 – April 16 |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min) 985 hPa (mbar) |
The 2010–11 South-West Indian Ocean cyclone season was the least active cyclone season on record in the basin, tied with 1982–83, producing only four systems of gale intensity. This was due to cooler than normal water temperatures and the Walker circulation – a broad atmospheric circulation – causing unusually moist conditions in the eastern Indian Ocean and unusually dry conditions in the western Indian Ocean. The basin includes the waters of the ocean south of the equator and west of 90º E to the eastern coast of Africa.
There were nine tropical or subtropical cyclones during the season, including five weak tropical disturbances or depressions, mostly in the northeastern portion of the basin or to the east of Madagascar. The first of these systems developed on October 25, 2010, which had its origins in the northeastern portion of the basin. On November 29, the first named storm – Abele – also formed in the same area, strengthening to become one of the season's two tropical cyclones – storms with maximum sustained winds of at least 120 km/h (75 mph). The strongest system of the season was Cyclone Bingiza, which attained peak winds of 160 km/h (100 mph) off the northeastern coast of Madagascar in February. Bingiza was also the only storm to cause severe effects on land, causing heavy damage and 34 fatalities across Madagascar. Moderate Tropical Storm Cherono developed in March and traversed much of the ocean, only brushing by the island of Rodrigues. The final system was a subtropical depression that intensified south of Madagascar, becoming extratropical on April 16 to end the season.
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Wikipedia