2010–11 Australian region cyclone season: Difference between revisions
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|style="background:#{{storm colen.wikipedia.orgr — 25 December|| style="background:#{{storm colour|Aus1}}"| {{ntsh|1}}Category 1 tropical cyclone ||style="background:#{{storm colour|Aus1}}"|{{convert|abbr=on|75|km/h|mph|disp=5}} ||style="background:#{{storm colour|Aus1}}"|{{Nts|993}} || Queensland || N/A || N/A || N/A ||<ref group="nb">Damage from Tropical Cyclone Tasha is not known as it was one of the causes of the [[December 2010 Queensland floods]], which caused 3-6 billion (AU$).</ref> |
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Revision as of 00:29, 4 January 2011
| 2010–11 Australian region cyclone season | |
|---|---|
 Season summary map | |
| Seasonal boundaries | |
| First system formed | 28 October 2010 |
| Last system dissipated | Still Active |
| Strongest storm | |
| Name | Anggrek |
| • Maximum winds | 95 km/h (60 mph) (10-minute sustained) |
| • Lowest pressure | 986 hPa (mbar) |
| Seasonal statistics | |
| Tropical lows | 6 |
| Tropical cyclones | 3 |
| Severe tropical cyclones | 0 |
| Total fatalities | None |
| Total damage | $1.5 billion (2011 USD) |
| Related articles | |
The 2010–11 Australian region cyclone season is expected to be an above average tropical cyclone season, with 17-22 tropical cyclones predicted to form compared to an average of 12. The season will begin on 1 November 2010 and run through until it ends on 30 April 2011. The Australian region is defined as being to south of the equator, between the 90th meridian east and 160th meridian east. Tropical cyclones in this area are monitored by five Tropical Cyclone Warning Centres (TCWC's): Jakarta, Port Moresby, Perth, Darwin, and Brisbane, each of which have the power to name a tropical cyclone. The TCWC's in Perth, Darwin, and Brisbane are run by the Australian Bureau of Meteorology, who designate significant tropical lows with a number and the U suffix. The Joint Typhoon Warning Center also issues unofficial warnings for the region, designating significant tropical cyclones with the "S" suffix when they form west of 135°E, and the "P" suffix when they form east of 135°E.
Seasonal forecasts
| Warning Center |
Date | Average activity |
Predicted activity |
Actual activity |
| Whole | October 2010 | 12 | 20-22 | 3 |
| Western | October 2010 | 7 | 11-12 | 2 |
| North Western | October 2010 | 6 | 7-8 | 0[nb 1] |
| Northern | October 2010 | 4 | 5 | 0 |
| Eastern | October 2010 | 4 | 6-7 | 1 |
| Source:BoM's Seasonal Outlook for Tropical Cyclones.[1] | ||||
|---|---|---|---|---|
| –––––––––––––––––––––––––––––––––––––––––– | ||||
| Whole | November 2010 | 12-15 | 19 | 2 |
| Western | November 2010 | 9-10 | 14 | 2 |
| Eastern | November 2010 | 5-6 | 7 | 0 |
| Source:GCACIC's Seasonal Outlook for Tropical Cyclones. | ||||
Bureau of Meteorology
Since the 2009-10 season, the Bureau of Meteorology's National Climate Center (NCC), ahead of each season has issued a seasonal forecast for the whole basin between 90°E and 160°E.[1][2] This season the NCC predicted how many tropical cyclones would pass through the basin as a whole as well as the Western, Northwest, Northern and Eastern regions with each prediction covering the whole tropical cyclone year from July to June.[1] This year the BoM forecast that the cyclone season could start up to two weeks earlier than usual.
This year, the NCC forecast that the basin could turn into the most active season since 1983–84, with 20–22 tropical cyclones developing in or moving into the region, compared with an average of twelve tropical cyclones.[1][3] For the western region, the NCC forecast that 11–12 tropical cyclones would develop in or pass through the region, compared to an average of seven.[1] The NCC also predicted that 7–8 tropical cyclones would form or pass through the north-west region, compared to an average of six, while also predicting that five tropical cyclones would develop within the northern region. However, for both of these regions, the NCC noted that the model used for predicting cyclones in this area had a "low skill".[1] For the eastern part of the basin the NCC reported that 6–7 tropical cyclones would develop and/or move through the region compared to an average of four.[1]
City University of Hong Kong
Since the 2009-10 Australian region cyclone season, the Guy Carpenter Asia-Pacific Climate Impact Centre (GCACIC), of the City University of Hong Kong (CityUHK), have issued forecasts of activity for each upcoming cyclone season. A forecast predicting how many tropical cyclones there will be within the Australian region as a whole and for the western part of the basin between 90°E and 135°E, is released in November.
Storms
Tropical Cyclone Anggrek
| Category 2 tropical cyclone (Australian scale) | |
| Tropical storm (SSHWS) | |
  | |
| Duration | 28 October – 4 November |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min); 986 hPa (mbar) |
On 28 October, the TCWC's in Perth and Jakarta reported that a Tropical Low had formed in TCWC Jakarta's area of responsibility, about 650 km, (400 mi) to the west of Jakarta, Indonesia.[4] Over the next couple of days the Tropical Low gradually intensified, before TCWC Jakarta reported early on 31 October, that the low had intensified into a Tropical Cyclone and named it Anggrek. Later that day, as Anggrek moved into TCWC Perths area of responsibility it was reported that Anggrek had further intensified into a Category 2 Tropical Cyclone. Anggrek then passed to the east of the Cocos (Keeling) Islands early on 2 November. Later that day, after passing to the east of the Cocos (Keeling) Islands, the TCWC in Perth reported that Tropical Cyclone Anggrek had weakened into a Category 1 Cyclone. Anggrek continued to weaken, and on 4 November, the TCWC Perth reported Anggrek had become a Tropical Low, and issued their final advisory on the system.
Throughout the Cocos (Keeling) Islands, heavy rain and gusty winds were experienced as Cyclone Anggrek passed. Only minor damage was reported, with several trees and power lines brought down. No deaths have been reported across the Islands.[citation needed]
A Cyclone Watch was issued on 30 October for the Cocos (Keeling) Islands while the system was still a Tropical Low. On 31 October, when the Tropical Low was upgraded into a Cyclone, the Cyclone Watch was upgraded into a Cyclone Warning.[5] On 1 November, the BOM reported that Cyclone Anggrek may produce destructive wind gusts as well as damaging waves. This led to a yellow alert being issued for Home and West Island.[6] A red alert was also issued, but was downgraded back to a yellow alert as Anggrek moved away from the islands.[7] During the next few days, the system slowly weakened as it slowly drifted west. Late on 4 November, the BoM issued their last advisory on Tropical Cyclone Anggrek, as it degenerated into a remnant low. The remnants of Tropical Cyclone Anggrek continued to move west, until it dissipated completely on 5 November.
Tropical Cyclone Abele
| Category 2 tropical cyclone (Australian scale) | |
| Category 1 tropical cyclone (SSHWS) | |
  | |
| Duration | 29 November – 6 December |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min); 987 hPa (mbar) |
On 29 November, TCWC Perth reported that Tropical Low 02U, had formed within the South-West Indian Ocean. Later that day, both the RSMC La Reunion and the JTWC started to monitor the low, designating it as Tropical Disturbance 02 and Tropical Cyclone 03S respectively. On 2 December, RSMC La Reunion reported that it had intensified into a moderate tropical storm and named it "Abele". On 3 December, Abele moved southeast and crossed 90°E as a Category 2 tropical cyclone when RSMC La reunion released their final advisory. Later that day, BoM took the full responsibility of monitoring the system and initiated warnings on Abele as a Category 1 tropical cyclone. On 4 December, Abele turned south-southeast while continuing to weaken further. The BoM then downgraded Abele into a tropical low and issued their final advisory. The remnants of Abele continued to weaken as they slowly moved southeast, before dissipating completely on December 6.
Tropical Low 03U
| Tropical low (Australian scale) | |
 | |
| Duration | 15 December – 20 December |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min); 989 hPa (mbar) |
In Western Australia, heavy rains produced by the low triggered one of the worst floods along the Gascoyne River in history. Preliminary estimates placed damage at A$100 million (US$100.4 million).[8]
Tropical Low 04U
| Tropical low (Australian scale) | |
| | |
| Duration | 22 December – 24 December |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min); |
![[icon]](/wiki/File:Wiki_letter_w_cropped.svg){kind=small} | This section needs expansion. You can help by adding to it. (December 2010) |
Tropical Cyclone Tasha
| Category 1 tropical cyclone (Australian scale) | |
| Tropical storm (SSHWS) | |
  | |
| Duration | 20 December – 25 December |
|---|---|
| Peak intensity | 75 km/h (45 mph) (10-min); 993 hPa (mbar) |
In late December, a low pressure area was tracked for several days moving westwards towards Queensland. Early on Christmas Day (local time) it strengthened rapidly and was designated Tropical Cyclone Tasha when it was 95 km (50 miles) east northeast of Cairns. The cyclone crossed the coast between Cairns and Innisfail at about 5:30 am, with wind gusts of up to 105 km/h (65 mph) recorded off the coast. Rainfall of about 100 mm was recorded in the space of an hour.[9] Damage from associated flooding was estimated at A$1 billion.[10][11]
Tropical Low 06U
| Tropical low (Australian scale) | |
  | |
| Duration | 30 December – 4 January |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min); 993 hPa (mbar) |
At the end of December, a Tropical Low developed inland over the Top End. On December 30, the TCWC Perth initiated cyclone advisories, as the system was initially forecasted to move off the coast of Western Australia and strengthen into a Tropical Cyclone. Later on the same day, Tropical Low 06U moved off the coast of Western Australia, as expected, and slowly began to strengthen, although it dissipated on January 4, before it reached Tropical Cyclone intensity.
Timeline of recent events
December
- 24 December
- 1600 UTC – TCWC Brisbane reports that Tropical Cyclone Tasha has formed off the Queensland coast[12]
Storm names
TCWC Jakarta
TCWC Jakarta monitor Tropical Cyclones from the Equator to 10S and from 90E to 125E. Should a Tropical Depression reach Tropical Cyclone strength within Jakartas Area of Responsibility then it will be assigned a name from the following list.[13]
| Anggrek | Bakung (unused) | Cempaka (unused) | Dahlia (unused) | Flamboyan (unused) |
| Kenanga (unused) | Lili (unused) | Mawar (unused) | Seroja (unused) | Teratai (unused) |
TCWC Port Moresby
Tropical cyclones that develop north of 10°S between 141°E and 160°E are assigned names by the Tropical Cyclone Warning Centre in Port Moresby, Papua New Guinea. Tropical cyclone formation in this area is rare, with no cyclones developing in it since 2007.[14] As names are assigned in a random order the whole list is shown below.
| Alu (unused) | Buri (unused) | Dodo (unused) | Emau (unused) | Fere (unused) | Hibu (unused) | Ila (unused) | Kama (unused) | Lobu (unused) | Maila (unused) |
Bureau of Meteorology
Since the start of the 2008–09, there has only been one list that the Bureau of Meteorology have assigned names to tropical cyclones from.[15] However the Bureau of Meteorology still operates the various TCWCs in Perth, Darwin & Brisbane. They monitor all tropical cyclones that form within the Australian region, issuing special advisories when a cyclone forms in either TCWC Jakarta's or Port Moresby's area of responsibility. The next name that will be used is Vince.
| Tasha | Vince (unused) | Zelia (unused) | Anthony (unused) | Bianca (unused) | Carlos (unused) | Dianne (unused) | Errol (unused) |
| Fina (unused) | Grant (unused) | Heidi (unused) | Iggy (unused) | Jasmine (unused) | Koji (unused) | Lua (unused) | Mitchell (unused) |
Season effects
| BoM/JTWC designation |
Storm Name |
Dates active | Storm category at peak intensity |
Peak 10-min sustained winds |
Pressure hPa |
Areas affected | Damage (AUD) |
Damage (USD) |
Deaths | Notes |
|---|---|---|---|---|---|---|---|---|---|---|
| 01U/02S | Anggrek | 28 October — 4 November | Category 2 tropical cyclone | 95 km/h (60 mph)* | 986 | Cocos (Keeling) Islands | None | None | None | |
| 02U/03S | Abele | 29 November — 6 December | Category 2 tropical cyclone | 95 km/h (60 mph)* | 987 | None | None | None | None | [nb 2] |
| 03U | N/A | 15 December — 20 December | Tropical low | 55 km/h (35 mph)* | 989 | Western Australia | 100,000,000 | 100,000,000 | Unknown | |
| 04U | N/A | 22 December — 24 December | Tropical low | 55 km/h (35 mph)* | 1002 | None | None | None | None | |
| 05U/04P | Tasha | style="background:#{{storm colen.wikipedia.orgr — 25 December | Category 1 tropical cyclone | 75 km/h (45 mph)* | 993 | Queensland | N/A | N/A | N/A | [nb 3] |
| 06U | N/A | 30 December — 04 January | Tropical low | 55 km/h (35 mph)* | 993 | Northern Territory, Western Australia | None | None | None | |
| 6 Systems | 28 October – Still active | 95 km/h (60 mph)* | 986 | 1,100,000,000 | 1,500,000,000 | Unknown | ||||
See also
- List of Southern Hemisphere cyclone seasons
- Atlantic hurricane seasons: 2010,
- Pacific hurricane seasons: 2010,
- Pacific typhoon seasons: 2010,
- North Indian Ocean cyclone seasons: 2010,
- 2010–11 South-West Indian Ocean cyclone season
- 2010–11 South Pacific cyclone season
Notes
- ^ This has been defined as being between 105°E and 130°E by the BoM
- ^ Also known as Tropical Cyclone Abele in the South-West Indian Ocean
- ^ Damage from Tropical Cyclone Tasha is not known as it was one of the causes of the December 2010 Queensland floods, which caused 3-6 billion (AU$).
References
- ^ a b c d e f g Staff Writer (2010-10-18). "Seasonal Outlook for Tropical Cyclones". Bureau of Meteorology. Retrieved 2010-10-18.
- ^ Staff Writer (2009-10-20). "Tropical Cyclone Outlooks". Bureau of Meteorology. Retrieved 2010-10-06.
- ^ Staff Writer (2010-10-08). "BoM warns that cyclone season could be worst in 27 years". mysailing.com.au. Retrieved 2010-10-08.
- ^ "Tropical Cyclone three-day outlook for the Western Region 2010-10-28". TCWC Perth. Bureau of Meteorology. 2010-10-28. Retrieved 2010-10-28.
- ^ "Tropical Cyclone Advice #5 (TC 01U - Anggrek)". TCWC Perth. Bureau of Meteorology. 2010-10-31. Retrieved 2010-10-31.
- ^ "Cyclone Anggrek Heads for Cocos Islands". Heraldsun. 1 November 2010. Retrieved 2 November 2010.
- ^ "Cyclone Anggrek eases near Cocos Islands". SMH. 2 November 2010.
- ^ http://www.bom.gov.au/wa/sevwx/gascoyne_river/gascoyne_river.shtml
- ^ Staff Writer (2010-12-25). "Cyclone Tasha hits Queensland coast". ABC. Retrieved 2010-12-25.
- ^ Staff Writer (2010-12-27). "Qld town faces 'worst flood in memory't". ABC. Retrieved 2010-12-27.
- ^ http://www.news.com.au/national/half-of-queensland-is-waterlogged-and-more-rain-to-come-with-expected-1b-damage-bill/story-e6frfkvr-1225976510284
- ^ "Tropical Cyclone Advice #2 (TC05U — Tasha)". TCWC Brisbane. Bureau of Meteorology. 2010-12-24. Retrieved 2010-12-24.
- ^ "Tropical Cyclone names". WMO. Retrieved 2008-09-04.
- ^ Gary Padgett (2008). "Monthly Global Tropical Cyclone Summary October". Australian Severe Weather. Retrieved 2009-09-18.
- ^ "Tropical Cyclone Names". Bureau of Meteorology. Retrieved 2008-08-08.
External links
- World Meteorological Organization
- Australian Bureau of Meteorology (TCWC's Perth, Darwin & Brisbane)
- Tropical Cyclone Warning Center Jakarta
- Joint Typhoon Warning Center (JTWC)
Tropical cyclones of the 2010–11 Australian region cyclone season | ||
|---|---|---|
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