2007–08 Australian region cyclone season
2007–08 Australian region cyclone season | |
---|---|
Seasonal boundaries | |
First system formed | 29 July 2007 |
Last system dissipated | 26 April 2008 |
Strongest storm | |
Name | Pancho |
• Maximum winds | 165 km/h (105 mph) (10-minute sustained) |
• Lowest pressure | 938 hPa (mbar) |
Seasonal statistics | |
Tropical lows | 14 |
Tropical cyclones | 10 |
Severe tropical cyclones | 3 |
Total fatalities | 149 |
Total damage | $93.8 million (2008 USD) |
Related articles | |
The 2007–08 Australian region cyclone season was a slightly below-average
Tropical Cyclone Lee also formed on 13 November and was named by
Tropical Cyclone Helen was the first tropical cyclone to form in 2008, in the Southern Hemisphere, forming in
In April 2008, Tropical Cyclones Rosie and Durga were the first tropical depressions to be monitored within
Seasonal summary
Systems
Tropical Cyclone 01U
Category 1 tropical cyclone (Australian scale) | |
Tropical storm (SSHWS) | |
Duration | 29 July (entered basin) – 1 August |
---|---|
Peak intensity | 75 km/h (45 mph) (10-min); 992 hPa (mbar) |
On 29 July, an area of low pressure, close to the edge of RSMC La Reunion's Area of responsibility, was designated as Tropical Disturbance 01R. However, this number was withdrawn in RSMC La Reunion's post–storm analysis.
During post–storm analysis, The Bureau of Meteorology upgraded the tropical low to a tropical cyclone in its post-storm analysis, with maximum 10-min sustained winds of 75 km/h (47 mph), based on QuikSCAT observations. The cyclone was estimated to have reached tropical cyclone intensity from 29 to 30 July.[2]
The tropical cyclone is the second on record to exist in the Western Australian region in July, the other being Cyclone Lindsay in 1996.[2]
Tropical Cyclone Lee–Ariel
Category 2 tropical cyclone (Australian scale) | |
Tropical storm (SSHWS) | |
Duration | 11 November – 15 November (Exited basin) |
---|---|
Peak intensity | 95 km/h (60 mph) (10-min); 984 hPa (mbar) |
On 13 November, the
Severe Tropical Cyclone Guba
Category 3 severe tropical cyclone (Australian scale) | |
Category 1 tropical cyclone (SSHWS) | |
Duration | 13 November – 20 November |
---|---|
Peak intensity | 120 km/h (75 mph) (10-min); 971 hPa (mbar) |
The
Flooding in Papua New Guinea led to at least 150 deaths.
Tropical Low 04U (Dama)
Tropical low (Australian scale) | |
Duration | 21 December – 22 December |
---|---|
Peak intensity | 55 km/h (35 mph) (10-min); 998 hPa (mbar) |
On 18 December, a Tropical Depression in the south-west Indian Ocean was named Moderate Tropical Storm Dama, monitored by
Tropical Cyclone Melanie
Category 2 tropical cyclone (Australian scale) | |
Tropical storm (SSHWS) | |
Duration | 28 December – 2 January |
---|---|
Peak intensity | 110 km/h (70 mph) (10-min); 962 hPa (mbar) |
On 27 December, the
Tropical Cyclone Helen
Category 2 tropical cyclone (Australian scale) | |
Tropical storm (SSHWS) | |
Duration | 28 December – 6 January |
---|---|
Peak intensity | 95 km/h (60 mph) (10-min); 975 hPa (mbar) |
In late December a tropical low formed over the Top End which was slow moving in the eastern Top End on 29 December, which began moving west during 1 January at the base of the Top End. By the evening of 2 January the Tropical low moved into the
The strongest wind gust recorded was at Charles Point Lighthouse with 120 kilometres an hour recorded during the Tropical Cyclone with Darwin Airport recording 102 kilometres an hour around 2 am ACST making it the first time since April 1985 for Darwin to experience Category 1 or more since Cyclone Gretel passed Darwin on 12 April 1985.[25][34][35] Damages from the storm amounted to an estimated A$21.5 million (US$15 million).[36]
Tropical Low 07U
Tropical low (Australian scale) | |
Duration | 31 December – 2 January |
---|---|
Peak intensity | 55 km/h (35 mph) (10-min); 994 hPa (mbar) |
On 31 December, the
Tropical Low (17S)
Tropical low (Australian scale) | |
Tropical storm (SSHWS) | |
Duration | 4 February – 10 February |
---|---|
Peak intensity | 55 km/h (35 mph) (10-min); 990 hPa (mbar) |
On 4 February, the
Severe Tropical Cyclone Nicholas
Category 3 severe tropical cyclone (Australian scale) | |
Category 1 tropical cyclone (SSHWS) | |
Duration | 10 February – 20 February |
---|---|
Peak intensity | 150 km/h (90 mph) (10-min); 948 hPa (mbar) |
On 10 February, the
Tropical Cyclone Ophelia
Category 2 tropical cyclone (Australian scale) | |
Category 1 tropical cyclone (SSHWS) | |
Duration | 27 February – 7 March |
---|---|
Peak intensity | 100 km/h (65 mph) (10-min); 985 hPa (mbar) |
On 27 February 2008 the
Tropical Low 20P
Tropical low (Australian scale) | |
Tropical storm (SSHWS) | |
Duration | 29 February – 29 February |
---|---|
Peak intensity | 55 km/h (35 mph) (10-min); 999 hPa (mbar) |
Early on 28 February, Tropical Cyclone Warning Center Brisbane identified a Tropical low which was located about 100 nmi (190 km) north-east of
Severe Tropical Cyclone Pancho
Category 4 severe tropical cyclone (Australian scale) | |
Category 3 tropical cyclone (SSHWS) | |
Duration | 25 March – 29 March |
---|---|
Peak intensity | 175 km/h (110 mph) (10-min); 934 hPa (mbar) |
On 23 March a Tropical low formed south-west of Christmas Island.[62] The next day TCWC Perth, began issuing shipping warnings on the Tropical low.[63] Later that day the JTWC issued a Tropical Cyclone Formation Alert, on the tropical low. They then started issuing warnings that day designating it as Tropical Cyclone 26S.[64][65] The low then intensified into a Tropical Cyclone and was named Pancho by TCWC Perth early on 25 March.[66]
The next day, Pancho became a severe tropical cyclone on the Australian scale,[67] with Pancho rapidly intensified into a minimal Category four cyclone on the Australian scale on 27 March. However, during the 28th, Tropical Cyclone Pancho entered an area of increasing vertical wind shear and cooler sea surface temperatures and within a few hours it was downgraded back to a Category 2 cyclone on the Australian scale.[68] The cyclone then weakened back to a tropical low about 300 kilometres south-west of the Western Australian Gascoyne coast with gale-force winds remaining south of the low. with both TCWC Perth and the JTWC issuing their final warnings on Pancho that day.[69][70]
The remnants of Pancho produced much needed rains over the drought-stricken areas of SW Western Australia. Mandurah, Garden Island, and Rottnest recorded the highest rainfall totals during the event at 56.4 mm (2.22 in), 49.8 and 49.4 mm (1.96 and 1.94 in) respectively.[71] The heavy rains caused some flooding along several roads, forcing officials to temporarily shut them down. Large swells from the storm also washed rocks onto the roads near Exmouth.[72]
Tropical Cyclone Rosie
Category 2 tropical cyclone (Australian scale) | |
Tropical storm (SSHWS) | |
Duration | 20 April – 24 April |
---|---|
Peak intensity | 95 km/h (60 mph) (10-min); 988 hPa (mbar) |
Late on 20 April, the JTWC, TCWC Jakarta and TCWC Perth all started to monitor a tropical low that had developed within the monsoon trough, about 1,030 km (640 mi), to the south-west of Jakarta, Indonesia.[73][74] During 21 April, convection surrounding the system rapidly developed in generally favourable conditions and organized around a low level circulation centre.[75] TCWC Jakarta and TCWC Perth then reported at 1500 UTC (2300 WST), that the low had developed into a category 1 tropical cyclone, before six hours later the JTWC followed suit and assigned it the designation 28S.[75][76] However the cyclone was not named as Rosie, until early the next day after it had moved out of TCWC Jakarta's area of responsibility and moved into Perth's.[75] As Rosie moved into TCWC Perth's area of responsibility, both TCWC Perth and the JTWC reported that the system had peaked with windspeeds of 95 km/h (59 mph), which meant that it was a category two tropical cyclone on the Australian scale and equivalent to a tropical storm on the SSHS.[74][75]
After it had been named, Rosie weakened into a category one tropical cyclone with the low level circulation centre became devoid of convection as it moved towards the south-southeast towards Christmas Island.
Tropical Cyclone Durga
Category 2 tropical cyclone (Australian scale) | |
Tropical storm (SSHWS) | |
Duration | 20 April – 26 April |
---|---|
Peak intensity | 95 km/h (60 mph) (10-min); 984 hPa (mbar) |
On 20 April, TCWC Perth and TCWC Jakarta both started to monitor a Tropical Low that was located within the South-West Indian Ocean about 2,847 km (1,769 mi) to the west of Jakarta, Indonesia. The low had developed within a monsoon trough of low pressure, however a moderate amount of northerly wind shear located over the system was hampering any further development of the system. Over the next few days as the low moved towards the southeast, the wind shear gradually decreased, which meant that convection was able to wrap around the system's low level circulation centre and help it develop into a category one tropical cyclone on 22 April. As the system developed into a category one tropical cyclone, it moved into TCWC Jakarta's area of responsibility who named it Durga.
Storm names
At the start of the Tropical Cyclone Year in July, tropical lows that developed into tropical cyclones were named by one of the four tropical cyclone warning centres, which each had their own list of names.
Lists
TCWC Perth
- Lee
- Melanie
- Nicholas
- Ophelia
- Pancho
- Rosie
TCWC Darwin
- Helen
TCWC Jakarta
- Durga
TCWC Port Moresby
- Guba
Season effects
Name | Dates | Peak intensity | Areas affected | Damage (USD) |
Deaths | Refs | |||
---|---|---|---|---|---|---|---|---|---|
Category | Wind speed | Pressure | |||||||
01U | 27–31 July | Category 1 tropical cyclone | 75 km/h (45 mph) | 992 hPa (29.29 inHg) | None | None | None | ||
Lee-Ariel | 11 - 15 November 2007 | Category 2 tropical cyclone | 95 km/h (60 mph) | 984 hPa (29.06 inHg) | None | None | None | [82] | |
Guba | 13–19 November | Category 3 tropical cyclone | 140 km/h (87 mph) | 970 hPa (28.64 inHg) | Papua New Guinea, Queensland | $76.7 million | $71.4 million | 149 | |
04U (Dama) | 21–22 December | Tropical Low | 55 km/h (34 mph) | 998 hPa (29.47 inHg) | None | None | None | None | |
Melanie | 28 December–2 January | Category 2 tropical cyclone | 110 km/h (70 mph) | 962 hPa (28.41 inHg) | None | None | None | ||
Helen |
31 December - 7 January | Category 2 tropical cyclone | 95 km/h (60 mph) | 975 hPa (28.79 inHg) | Northern Australia | $22.4 million | None | ||
07U | 31 December- 2 January | Tropical Low | 55 km/h (34 mph) | 994 hPa (29.35 inHg) | None | None | None | ||
Low (17S) | 2–10 February | Tropical Low | 55 km/h (34 mph) | 990 hPa (29.23 inHg) | None | None | None | ||
Nicholas | 10–20 February | Category 3 tropical cyclone | 130 km/h (81 mph) | 956 hPa (28.23 inHg) | Western Australia | None | None | None | |
Ophelia | 29 February - 7 March 2008 | Category 2 tropical cyclone | 100 km/h (65 mph) | 985 hPa (29.09 inHg) | Northern Territory, Western Australia | None | None | [83] | |
20P | 29 February | Tropical Low | 55 km/h (34 mph) | 999 hPa (29.5 inHg) | None | None | None | ||
Pancho | 25–29 March | Category 4 tropical cyclone | 165 km/h (103 mph) | 938 hPa (27.70 inHg) | Christmas Island, Western Australia | None | None | ||
Rosie | 20 - 24 April 2008 | Category 2 tropical cyclone | 95 km/h (60 mph) | 988 hPa (29.18 inHg) | Christmas Island | Unknown | None | [84] | |
Durga | 20 - 26 April 2008 | Category 2 tropical cyclone | 95 km/h (60 mph) | 988 hPa (29.18 inHg) | None | None | None | [85] | |
Season aggregates | |||||||||
12 | 27 July – 24 April | 175 km/h (109 mph) | 934 hPa (27.58 inHg) |
See also
- Tropical cyclones in 2007 and 2008
- Atlantic hurricane seasons: 2007, 2008
- Pacific hurricane seasons: 2007, 2008
- Pacific typhoon seasons: 2007, 2008
- North Indian Ocean cyclone seasons: 2007, 2008
References
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