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Revision as of 06:40, 28 January 2018
| 2017–18 South-West Indian Ocean cyclone season | |
|---|---|
 Season summary map | |
| Seasonal boundaries | |
| First system formed | December 27, 2017 |
| Last system dissipated | Season Ongoing |
| Strongest storm | |
| Name | Berguitta |
| • Maximum winds | 165 km/h (105 mph) (10-minute sustained) |
| • Lowest pressure | 940 hPa (mbar) |
| Seasonal statistics | |
| Total disturbances | 5 official, 1 unofficial |
| Total depressions | 5 |
| Total storms | 4 |
| Tropical cyclones | 3 |
| Intense tropical cyclones | 1 |
| Total fatalities | > 52 total |
| Total damage | $12 million (2018 USD) |
| Related articles | |
| South-West Indian Ocean tropical cyclone seasons 2015–16, 2016–17, 2017–18, 2018–19, 2019–20 | |
The 2017–18 South-West Indian Ocean cyclone season is a current event in the annual cycle of tropical cyclone and subtropical cyclone formation. It officially began on November 15, 2017, and will end officially on April 30, 2018, with the exception for Mauritius and the Seychelles, for which it will end on May 15, 2018. These dates conventionally delimit the period of each year when most tropical and subtropical cyclones form in the basin, which is west of 90°E and south of the Equator. Tropical and subtropical cyclones in this basin are monitored by the Regional Specialised Meteorological Centre in La Réunion.
Seasonal summary
Systems
Tropical Cyclone Ava
| Tropical cyclone (MFR) | |
| Category 2 tropical cyclone (SSHWS) | |
  | |
| Duration | December 27 – January 9 |
|---|---|
| Peak intensity | 155 km/h (100 mph) (10-min); 965 hPa (mbar) |
Tropical Cyclone Irving
| Tropical cyclone (MFR) | |
| Category 2 tropical cyclone (SSHWS) | |
  | |
| Duration | January 6 (Entered basin) – January 9 |
|---|---|
| Peak intensity | 150 km/h (90 mph) (10-min); 964 hPa (mbar) |
Intense Tropical Cyclone Berguitta
| Intense tropical cyclone (MFR) | |
| Category 3 tropical cyclone (SSHWS) | |
  | |
| Duration | January 12 – January 20 |
|---|---|
| Peak intensity | 165 km/h (105 mph) (10-min); 940 hPa (mbar) |
Tropical Depression 04
| Tropical depression (MFR) | |
  | |
| Duration | January 15 – January 16 |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min); 999 hPa (mbar) |
Severe Tropical Storm Cebile
| |||
|---|---|---|---|
| Current storm status Severe tropical storm (MFR) | |||
| Current storm status Tropical storm (1-min mean) | |||
| |||
| As of: | 04:00 RET (00:00 UTC), January 28 | ||
| Location: | 12°30′N 84°18′E / 12.5°N 84.3°E / 12.5; 84.3 (Cebile) 3,170 km (1,970 mi) ENE of La Réunion | ||
| Sustained winds: | 95 km/h (60 mph) (10-min mean) 85 km/h (50 mph) (1-min mean) gusting to 130 km/h (80 mph) | ||
| Pressure: | 990 hPa (mbar; 29.23 inHg) | ||
| Movement: | SSW at 6 kn (11 km/h; 6.9 mph) | ||
| See more detailed information. | |||
Current storm information
As of 04:00 RET (00:00 UTC) January 28, Severe Tropical Storm Cebile is located near 12°30′S 84°18′E / 12.5°S 84.3°E / -12.5; 84.3 (Cebile), about 3,170 kilometres (1,970 miles) east-northeast of La Réunion. 10-minute sustained winds are at 95 km/h (60 mph), while 1-minute sustained winds are at 85 km/h (50 mph), with gusts of up to 130 km/h (80 mph). The minimum barometric pressure is at 990 hectopascals (29.23 inHg), and the system is moving south-southwestwards at 6 knots (11 km/h; 6.9 mph).
For latest official information, see:
- The MFR's RSMC bulletin on Severe Tropical Storm 5 (Cebile)
- The MFR's forecast track map on Severe Tropical Storm 5 (Cebile)
- The JTWC's TC warning text on Tropical Cyclone 07S (Cebile)
Other systems
A low-pressure system, classified as a tropical low by the Australian Bureau of Meteorology, moved west-southwest across the 90th meridian east into the Southwest Indian Ocean basin on August 8. At 10:00 UTC the following day, Météo-France Réunion upgraded the low-pressure system to a zone of disturbed weather, with sustained winds of up to 55 km/h (35 mph) being detected on the southern side of the circulation by scatterometer. At this time, the disturbance was located approximately 2,375 km (1,475 mi) west of Jakarta, Indonesia. Météo-France noted that the revival of convective activity in the basin was likely due to the interaction between an eastwards-moving Kelvin wave and a westwards-moving Rossby wave.
Storm names
Within the South-West Indian Ocean, tropical depressions and subtropical depressions that are judged to have 10-minute sustained wind speeds of 65 km/h (40 mph) by the Regional Specialized Meteorological Center on La Réunion Island, France (RSMC La Réunion) are usually assigned a name. However, it is the Sub-Regional Tropical Cyclone Advisory Centers in Mauritius and Madagascar who name the systems. The Sub-Regional Tropical Cyclone Advisory Center in Mauritius names a storm should it intensify into a moderate tropical storm between 55°E and 90°E. If instead a cyclone intensifies into a moderate tropical storm between 30°E and 55°E then the Sub-Regional Tropical Cyclone Advisory Center in Madagascar assigns the appropriate name to the storm. Beginning from the 2016–17 season, name lists within the South-West Indian Ocean will be rotated on a triennial basis. Storm names are only used once, so any storm name used this year will be removed from rotation and replaced with a new name for the 2020–21 season. The unused names are expected to be reused in the list for the 2020–21 season.
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Season effects
This table lists all of the tropical cyclones and subtropical cyclones that were monitored during the 2017–2018 South-West Indian Ocean cyclone season. Information on their intensity, duration, name, areas affected, primarily comes from RSMC La Réunion. Death and damage reports come from either press reports or the relevant national disaster management agency while the damage totals are given in 2017 or 2018 USD.
| Name | Dates | Peak intensity | Areas affected | Damage (USD) |
Deaths | Refs | ||
|---|---|---|---|---|---|---|---|---|
| Category | Wind speed | Pressure | ||||||
| Ava | December 27 – January 9 | Tropical cyclone | 155 km/h (100 mph) | 965 hPa (28.50 inHg) | Madagascar | Unknown | 51 | |
| Irving | January 6 – 9 | Tropical cyclone | 150 km/h (90 mph) | 964 hPa (28.47 inHg) | None | None | None | |
| Berguitta | January 12 – 20 | Intense tropical cyclone | 165 km/h (105 mph) | 940 hPa (27.76 inHg) | Mauritius, La Réunion | $12 million | > 1 | |
| 04 | January 15 – 16 | Tropical depression | 55 km/h (35 mph) | 999 hPa (29.50 inHg) | Mozambique | None | None | |
| Cebile | January 26 – Present | Severe tropical storm | 95 km/h (60 mph) | 990 hPa (29.24 inHg) | None | None | None | |
| Season aggregates | ||||||||
| 5 systems | December 27 – Present | 165 km/h (105 mph) | 940 hPa (27.76 inHg) | $12 million | > 52 | |||
See also
- List of Southern Hemisphere cyclone seasons
- Atlantic hurricane seasons: 2017, 2018
- Pacific hurricane seasons: 2017, 2018
- Pacific typhoon seasons: 2017, 2018
- North Indian Ocean cyclone seasons: 2017, 2018
- 2017–18 Australian region cyclone season
- 2017–18 South Pacific cyclone season
- South Atlantic tropical cyclone
References
- "WebCite query result". www.webcitation.org. Retrieved 2017-08-08.
{{cite web}}: Cite uses generic title (help) - "WebCite query result". www.webcitation.org. Retrieved 2017-08-09.
{{cite web}}: Cite uses generic title (help) - ^ "ZCIT Bulletin for August 9 2017" (PDF).
{{cite web}}: Cite has empty unknown parameter:|dead-url=(help) - Regional Association I Tropical Cyclone Committee (2016). "Tropical Cyclone Operational Plan for the South-West Indian Ocean" (PDF). World Meteorological Organization. Retrieved 2016-10-05.
- "Madagascar cyclone death toll rises to 51, with 54,000 people displaced". Hindustan Times. 15 January 2018. Retrieved 15 January 2018.
- "Tempête tropicale intense : quel impact et quel coût sur les secteurs affectés ?". Le Défi Média. 19 January 2018. Retrieved 19 January 2018.
- "Tropical Cyclone Berguitta PATH LIVE: Storm track LOOMS on La Reunion as Mauritius BLASTED". Express. 18 January 2018. Retrieved 19 January 2018.
External links
| Tropical cyclones of the 2017–18 South-West Indian Ocean cyclone season | ||
|---|---|---|
| TCAva TCIrving ITCBerguitta TD04 ITCCebile ITCDumazile STSEliakim TCFakir STSFlamboyan | |
| 2010–2019 South-West Indian Ocean cyclone seasons | |
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