2009–10 Australian region cyclone season

The Australian cyclone 2009-2010 season officially began on 1 November 2009 and lasted until 30 April 2010. Operating plan of the World Meteorological Organization looks for the waters in the southern hemisphere in addition a "tropical cyclone year " before. This began on 1 July 2009 and ended on 30 June 2010.

Part of the Australian cyclone season storms that form south of the equator, between the 90th and 160th degree of east longitude. This includes Australia, Papua New Guinea, the western part of the Solomon Islands, East Timor and the southern areas of Indonesia. Tropical cyclones in this area are from Tropical Cyclone Warning Centres five ( TCWCs ) monitors: the Bureau of Meteorology in Perth, Darwin and Brisbane in Australia; the TCWC Djakarta in Indonesia and the TCWC Port Moresby in Papua New Guinea.

The Joint Typhoon Warning Center gives this region from unofficial warnings that are intended for U.S. institutions. The extension " S" is used when the storm is west of 135 ° E, and a "P ", if this is happening east of this line.

The first storm and with ongoing, ten-minute wind speeds of 200 km / h and a central pressure of 925 hPa at the same time the strongest tropical cyclone of the season was Cyclone Laurence, which formed on December 8, 2009. The last system of the cyclone season was Sean, who broke up on April 25. Because of the negative effects of cyclones Laurence and Magda these two names were deleted after the season of the list of names for the Australian region.

• 2.1 Severe Tropical Cyclone Laurence
• 2.2 Tropical Depression 02U
• 2.3 Tropical Depression 03U ( Edzani )
• 2.4 Tropical Depression 04U
• 2.5 Tropical cyclone Neville
• 2.6 Severe Tropical Cyclone Magda
• 2.7 Tropical Cyclone Olga
• 2.8 Tropical Depression 08U
• 2.9 Severe Tropical Cyclone Ului
• 2:10 Tropical Depression 10U ( Imani )
• Tropical Cyclone Paul 2:11
• Tropical Cyclone Robyn 2:12
• Tropical Cyclone Sean 2:13

• 4.1 TCWC Djakarta
• 4.2 TCWC Port Moresby
• 4.3 TCWCs in Perth, Darwin and Brisbane

Season forecasts

Bureau of Meteorology

For the first time the National Climate Center were (NCC ) of the Bureau of Meteorology announced a seasonal forecast for the entire basin between 90 ° E and 160 ° E, including the areas of responsibility of the TCWCs Jakarta and Port Moresby. The NCC were four separate forecasts announced a whole for the pelvis and three sub-regions for the Western, Northern and Eastern, in each case the entire tropical cyclone year was covered from July 2009 to June 2010. For the entire region was the NCC forecast of tropical cyclones from 7-13, which form either here or migrate from outside the Australian region would. For the Western region, which is defined by the NCC as between 90 ° E and 125 ° E, the experts were predicting tropical cyclones 5-8; the average of the cyclones that form here or hike here, is seven. For the region of Northern, which was defined as the area between 125 ° E and 142.5 ° E, the center predicted 3-4 cyclones, compared to an average of four. However, you stated that the experience and therefore the reliability of the forecast model for this area to be low. For the region of Eastern, which includes the area between 142.5 ° E and 160 ° E, the NCC came from tropical cyclones 3-4 that form here or would wander through here. The average in the eastern region also is four.

City University of Hong Kong

Even the Guy Carpenter Asia- Pacific Climate Impact Centre ( GCACIC ) City University of Hong Kong ( CityUHK ) has made ​​known a prediction of tropical cyclone activity in the Australian region in November 2009 for the first time. The prediction of the GCACICs divided into the specification for the region as a whole and for the region between 90 ° E and 135 ° E; So this area is not completely consistent with the Western region, respectively, as defined by the NCC of the Bureau of Meteorology. For the 2009-2010 season cyclone in the Australian region as a whole the GCACIC came from an almost average activity. Accordingly, we went from eight tropical cyclones from total, five of them in the western part of the region.

Storms

Severe Tropical Cyclone Laurence

On December 8, the TCWC reported in Darwin that has formed near the south coast of Papua New Guinea, a tropical depression. The system moved westward and as it passed by on December 10th at the Top End, gave the TCWC storm warnings for coastal areas between Croker Iceland and Iceland from Bathurst, with the exception of Darwin. During the day the TCWC raised in Perth on all previous warnings and issued new warnings for the coast of Kalumburu, southwards to Wyndham, Western Australia and westward to the Mitchell Plateau. The system was still about one day at the limits of the areas of responsibility of the TCWCs in Darwin and Perth before it intensified to a Category 1 cyclone and from TCWC Darwin was named Laurence. The system moved off the coast westward and intensified on 15 December for category 2 cyclone and a few hours later to Category 3 cyclone. The next day, Laurence was incremented to a severe tropical cyclone, which reached the highest category on the Australian cyclone scale a few hours later. The cyclone crossed the coast of the south-east Kimberley region of Western Australia and the prediction was assumed that Derby was in the path of the hurricane. On December 17, the cyclone meandered over the north Kimberley and heavy rainfall led to significant rainfall over land. The cyclone aspired to the southwest, and on 18 December came the cyclone again afloat. About the warm waters of the sea won Laurence from 19 December to power again. On December 20, the cyclone reached Category 3 again and turned south. On the morning of December 21, Laurence intensified to a Category 4 cyclone and a few hours later, the category 5 for the coast between Pardoo and Sandfire and inland to Yarrie was triggered the highest storm warning level.

Tropical Depression 02U

Directly north of Australia was formed on 27 December a tropical depression that came on January 3 in the Timor Sea, so that a cyclone warning for the coast of Kalumburu to Cape Don was thrown. This was also true of Darwin, the capital of Northern Territorys. On the way into the Joseph Bonaparte Gulf, the system intensified. The tropical depression was located on January 5 in the west of the Victoria River. In the region of heavy rain was falling, and gusts of wind reached a speed of up to 90 km / h

Tropical Depression 03U ( Edzani )

Tropical Depression 03U was 9 ° 40 ' south latitude and 94 ° 24' east longitude, ie west of Indonesia and Malaysia, about 350 km northwest of the Cocos Islands. Although initially an intensification was predicted to a cyclone within 48 hours, but this did not happen. On January 4, the system crossed west over the 90th degree of east longitude, thereby reaching the responsibility of TCWC Réunion. There the deep but eventually intensified and was named Edzani.

Tropical Depression 04U

The monsoon trough over northern Australia amplified and brought off the coast Pilbaras on 14 January produced a tropical depression. For the navigation warnings were issued, but vertical wind shear prevented the system during its drift westward during the next ten days to intensify into a tropical cyclone.

Tropical Cyclone Neville

A first unclassified tropical depression formed in the area of ​​responsibility of TCWCs in Darwin, at about 11.9 ° S and 138.5 ° E in the northern Gulf of Carpentaria. On January 16, the system was officially classified as a system 05U and predicted an intensification. However, the system did not develop before the crossing of the Cape York Peninsula on 18 January. Strengthened the system, however, and has been upgraded over the open Coral Sea on 20 January to Tropical Cyclone Neville. However, during the day the cyclone lost again in strength. He suggested a route that would have the storm out again over the peninsula. However, Neville broke up before the system could reach the coast of Queensland.

Severe Tropical Cyclone Magda

On 19 January, the TCWCs reported in Perth and Darwin that south of Timor has a tropical depression formed on the edge of the respective area of ​​responsibility. This was classified shortly afterwards from Perth as 06U. The system moved southward and intensified on January 20 to Tropical Cyclone Magda. Magda drew near Kuri Bay late on January 21 over the country. Subsequent analyzes revealed that Magda at landfall was a severe tropical cyclone of category 3.

Tropical Cyclone Olga

On January 20, RSMC Nadi and the TCWC Brisbane announced that Tropical Depression 04F was from the east pulled in the Australian area of ​​responsibility and was re- done as Tropical Depression 07U. Late on 22 January to 07U had intensified into a Category 1 cyclone and received from Brisbane TCWC the name Olga. A day later, cyclone Olga had intensified in the second category. On 24 January, Olga had weakened considerably and was classified only as a tropical depression, the almost stationary Cairns was off the coast of Queensland. The system then moved However, to the west and crossed to January 26, the southern part of Cape York Peninsula, but remained south of the Gulf of Carpentaria. For the coast of the gulf between Burketown and Borroloola storm warnings were issued. An upper level trough that crossed the southeast of the continent, forcing the ex- cyclone Olga on January 29 in an easterly direction. To the system could intensify again over the waters of the Gulf and reached within twelve hours again Category 1 of the Australian scale. Olga then went in a little more south-east facing cyclone track and crossed on the night of January 30 (local time) Mornington Iceland. In the early hours of January 30, the Center Olga moved as a Category 1 cyclone in northwestern Queensland finally over land.

The remnant low moved over the following week gradually southward and joined with a monsoon trough, so that it came across Queensland and New South Wales to significant rains that fell the rain deficit of the summer 2009/2010 in the region.

Before Olga intensified to a cyclone, the storm killed two children east of Honiara in the Solomon Islands. In the Coral Sea, the cyclone track Olgas was due to the Fujiwhara effect from time to time under the influence of cyclone Neville.

Tropical Depression 08U

From the monsoon trough over the Arafura Sea was formed on February 22, a tropical depression over the Northern Territory and first moved only slightly, to 26 February began a southward migration. An approaching trough from the west drove the system to the east. On March 1, the system reached the south-west of Queensland. About the Northern Territory and large parts of southern Queensland produced the tropical low level, especially on 1 and 2 March abundant and persistent rains that led to a number of rivers in southwest Queensland floods with new highs. As the rainfall eased the system moved further south and joined in South Australia with an extratropical low pressure area and caused on 6 and 7 March, storms in Melbourne, Victoria.

Severe Tropical Cyclone Ului

On March 11, the TCWC Brisbane began with the issue of storm warnings for Tropical Depression 13F and classified it as Tropical Depression 09U. At this time, the system was still the responsibility of the RSMC Nadi and developed there to the heavy tropical cyclone Ului, in category 5 its greatest intensity reached there, when crossing the 160th degree of longitude west already, however, in the category 4 had weakened. On 16 and 17 March, the storm struck a first southern and southwestern cyclone track later. Although it has been predicted that Ului would reach the highest category of the Australian scale again, as it allows the influence eluded by a height low and the severe tropical cyclone Tomas, but the storm stayed in the category 4 and weakened in the early morning hours of 18 March from the category 3 and a day in Category 2. On 20 March, the cyclone Ului had intensified again in the category 3. The storm moved across the Whitsunday Islands and maintained its strength until landfall around 1:30 clock local time on March 21, near Airlie Beach in just on the fourth anniversary of Cyclone Larry made ​​landfall on the coast of Queensland. However, cross-country, the cyclone rapidly lost strength and dissipated on the day.

On land, the storm caused significant damage, especially between Airlie Beach and Mackay. Many boats capsized due to the swell or were thrown by the storm surge ashore. In addition, the cyclone uprooted many trees and covered rooftops. For about 50,000 households, the supply was interrupted with electrical energy.

Tropical Depression 10U ( Imani )

On March 22, noted the RSMC Reunion, which had formed at 10 ° 54 ' S / 89 ° 54 ' E, in the north- east area of responsibility of Météo -France, a tropical disturbance. The TSWC Perth had already classified the same system of eight hours late as a tropical depression and watched it because of its proximity to the Australian sector. The system moved into this phase slowly southwest and intensified in the southwestern Indian Ocean to Tropical Cyclone Imani and remained west of 90 ° E longitude.

Tropical Cyclone Paul

On March 23, reported the TCWC Darwin that formed in the Arafura Sea, a tropical depression. Four days later, on March 27, the system had intensified to tropical cyclone Paul and moved parallel to the coast of northeastern Arnhem Land in the Northern Territory south. On March 28, the system was almost stationary in the vicinity of Cape Shield. The cyclone intensified on March 29 to a Category 2 cyclone. On the same evening the center of the cyclone moved directly south of Cape Shield on land where the tropical cyclone significantly weakened and was downgraded in the afternoon of March 30 to a tropical depression. Late on 31 March after Paul meandered for a while about Arnhem Land, the system came again in the Gulf of Carpentaria.

Tropical Cyclone Paul covered the region with heavy rain. Groote Eylandt reported forty hours of continuous rain, with widespread rainfall of more than 280 mm, Bulman reported 442 mm of rainfall in this period. The Chief Minister of the Northern Territorys Paul Henderson declared a state of emergency for parts of Arnhem Land. Although the system had lost its strength, it continued to produce ample amounts of rain. In the 24 hours before 9:00 clock local time on 1 April fell on the McArthur River Mine 160 mm of rainfall, which was the highest daily rainfall there for seven years. A Elfjahreshoch had fallen in Borroloola in the same period 185 mm, 266 mm in the Bing Bong had the highest value for over 14 years.

Tropical Cyclone Robyn

On 2 April, the TCWC Perth informed that has formed at 11 ° S and 92 ° 18 'E a tropical depression. This intensified in the following hours and the Cocos Islands was around 500 kilometers west classified as a tropical cyclone Robyn. The system first moved southward and intensified it to. It reached on April 5 at 0:00 UTC clock its biggest strength with ongoing ten-minute sustained winds of 60 knots. Due to northwesterly wind shear used the slowdown. After a cyclonic loop counterclockwise Robyn lost on April 6 at 06:00 UTC clock the status of a cyclone. As a tropical depression Robyn moved until its dissolution on April 7 to the southwest.

In the operating mode Robyn was classified as a Category 3 cyclone. In the post-analysis, however, revealed at the time the greatest strength of the cyclone lower by five nodes ten-minute wind speed.

Tropical Cyclone Sean

On April 21, reported the TCWC Perth that at 10.3 ° S and 116.4 ° E, the Tropical Depression 13U has formed. The system first moved to the south west and intensified into a tropical cyclone, which the TCWC Perth gave the name Sean. Finally, Sean moved westward to the open southern Indian Ocean beyond, without endangering land and broke up on April 25.

Season overview

Storm names

The various Tropical Cyclone Warning Center assign the names for storms that form in their respective areas of responsibility. The storms keep their names when they move from one jurisdiction to another. However, be storms that move in the area of ​​responsibility of Météo -France in Réunion, newly named there. Storms that pass from there coming into the area of ​​responsibility of TCWC in Perth, keep those allocated in the southwest Indian Ocean name. On the following lists of names are names that have not been awarded in this cyclone season, shown in light gray.

TCWC Djakarta

The TCWC in Jakarta observed tropical cyclones that form between the equator and 10 ° south latitude and between 90 ° and 125 ° east longitude. By the Australian Bureau of Meteorology storm special instructions issued in this area to support. Should a tropical cyclone within this area of ​​responsibility form, then assigns the TCWC Djakarta a name from the list below; the next name to be allocated is Anggrek. In the 2009-2010 season, no storm was named by the TCWC Djakarta.

• Anggrek
• Bakung
• Cempaka
• Dahlia
• Flamboyan

• Kenanga
• Lili
• Mawar
• Seroja
• Teratai

TCWC Port Moresby

Tropical cyclones that form between 10 ° south latitude and the Equator, and between 141 ° and 160 ° E are assigned names by the Tropical Cyclone Warning Centre in Port Moresby in Papua New Guinea. The formation of tropical cyclones in this area is rare during the 2007-2008 season, it was just a storm, cyclone Guba. The following list gives the names assigned by the TCWC in Port Moresby. It is unclear which is the next name that will be given. In the 2009-2010 season, no storm through the TCWC Port Moresby was named.

• Alu
• Buri
• Dodo
• Emau
• Fere

• Hibu
• Ila
• Kama
• Lobu
• Maila

TCWCs in Perth, Darwin and Brisbane

From the beginning of the cyclone season 2008-2009, the Australian Bureau of Meteorology uses only a single list of names, but still operates three TCWCs, Perth, Darwin and Brisbane. This watch all tropical cyclones that form between 90 ° and 160 ° east longitude, and give special warnings out when cyclones form in the responsibility of the TCWCs in Jakarta's or Port Moresby. The first name that was assigned, Laurence was.