Cyclone Trevor

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Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
Disc Plain black.svg Tropical cyclone
Solid black.svg Subtropical cyclone
ArrowUp.svg Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression
Severe Tropical Cyclone Trevor
Trevor 2019-03-23 0100Z.jpg
Severe Tropical Cyclone Trevor making landfall in Australia, shortly after peak intensity on 23 March 2019

A moderate to strong pulse of the Madden–Julian oscillation (MJO) moved into the Maritime Continent during March 2019. This aided the formation of a weak monsoonal trough to the north of Australia, which would help any tropical cyclone located in the area move southward toward the country. [1] Although, the MJO soon weakened and no longer played an influence of tropical weather. This was due to other climate influences overshadowing the weakening MJO. Global forecasting models came into agreement that the MJO would continue to no longer be discernible over Trevor's lifespan. [2]

On March 11, the Bureau of Meteorology (BOM) noted that a tropical low had formed over the Solomon Sea near Papua New Guinea. [3] The Joint Typhoon Warning Center (JTWC) first issued a Tropical Cyclone Formation Alert (TCFA) at 1:30 UTC on March 15, while the disturbance was located roughly 270 miles east-northeast of Port Moresby, Papua New Guinea. The agency noted that the system was growing a tightening low-level center and deep convection. Within an area of moderate vertical wind shear and warm sea surface temperatures, the low began to strengthen. [4]

Preparations and impact

New Guinea

In Papua New Guinea, a strong wind warning was put in effect for coastal areas between the Gulf of Papua and the Torres Strait. [5] Due to the wet weather Trevor brought to Port Moresby, the first day of the 2018–19 ICC T20 World Cup East Asia-Pacific Qualifier had to be delayed. [6]

Trevor caused destruction across Goodenough Island. 591 residences were partially damaged, while 463 residences were fully damaged. A primary school was damaged by high winds, forcing classes to be cancelled for several weeks. On the island, 20% of gardens growing food were damaged by Trevor. The staff houses at a clinic in Yauyaula were mangled. In Kilia Ward, a church was destroyed by powerful winds. Fish ponds on the island were demolished by the cyclone. [7]

Australia

Bureau of Meteorology, Australia Twitter
@BOM_au

Not since Marcia/Lam in 2015 have we had 2 severe cyclones in the Aus region at the same time! #CycloneVeronica in northwest WA is currently Category 4 strength, while #CycloneTrevor in the Gulf of Carpentaria is also likely to intensify to Cat 4 today.

22 Mar 2019 [8]

Cyclones Joaninha, Savannah, Veronica, and Trevor (from left to right) all active simultaneously on 21 March Joaninha, Savannah, Veronica and Trevor 2019-03-21.png
Cyclones Joaninha, Savannah, Veronica, and Trevor (from left to right) all active simultaneously on 21 March

As a precaution, roughly 1,400 people were forced to evacuate to shelters in rural parts of the Northern Territory. [9] This was the largest evacuation in the area since Cyclone Tracy in 1974. [10] A state of emergency was issued for the territory on 21 March. [11] The Carpentaria Highway, Roper Highway, Barkly Stock Route, and the Tablelands Highways were shut down. [12]

As the storm made landfall on the Cape York Peninsula, the entire town of Coen lost electricity while nearby Aurukun reported isolated power outages. [13] The Iron Range National Park received extensive damage from the storm with numerous trees being flattened. [14]

Retirement

Due to the impact in Northern Queensland caused by the storm, the name Trevor was retired and will never be used again for an Australian region tropical cyclone. It will be replaced by Trung upon the next list repeat. [15] [16]

See also

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<span class="mw-page-title-main">Cyclone Lam</span> Category 4 Australian region tropical cyclone in 2015

Severe Tropical Cyclone Lam was the strongest storm to strike Australia's Northern Territory since Cyclone Monica in 2006. It formed from the monsoon trough on February 12 in the Coral Sea. For much of its duration, the system moved westward due to a ridge to the south. The system crossed over the Cape York Peninsula and moved into the Gulf of Carpentaria, whereupon it gradually organized due to warm waters and favorable outflow. On February 16, the Bureau of Meteorology (BoM) classified it as a Category 1 on the Australian tropical cyclone intensity scale and gave it the name Lam. The storm intensified further while drifting toward the Wessel Islands, developing an eye and strengthening to the equivalence of a minimal hurricane on February 18. It strengthened to reach maximum sustained winds of 185 km/h (115 mph) early on February 19 before turning to the southwest, making it a Category 4 cyclone. That day, it made landfall on Northern Territory between Milingimbi and Elcho Island at peak intensity, and it rapidly weakened over land. About six hours after Lam moved ashore, Cyclone Marcia struck Queensland as a Category 5 cyclone, marking the first time on record that two storms of Category 4 intensity struck Australia on the same day.

<span class="mw-page-title-main">Cyclone Nora</span> A strong tropical cyclone which affected Far North Queensland and the Top End in March 2018.

Severe Tropical Cyclone Nora was a strong tropical cyclone that affected Far North Queensland and the northeastern Northern Territory during March 2018. The ninth named storm and third severe tropical cyclone of the 2017–18 Australian region cyclone season, Nora developed from a tropical low which formed near the Torres Strait on 19 March. The system initially moved quickly to the west-northwest, and then began tracking slowly southwestwards over the Arafura Sea while gradually developing. A turn to the east on 22 March brought the tropical low into a favourable environment for strengthening, and the system reached tropical cyclone intensity later that day. Nora then underwent a period of rapid intensification as it moved southeastwards into the Gulf of Carpentaria. The storm peaked on 23 March as a high-end Category 3 severe tropical cyclone with sustained winds of 155 km/h (96 mph) and a minimum barometric pressure of 958 hPa (28.29 inHg). Nora made landfall north of Pormpuraaw at about 13:00 UTC on 24 March as a minimal Category 3 system. Nora weakened steadily as it tracked southwards along the coast, and was downgraded to a tropical low the following day. Nora's remnants meandered over land for several days before moving back over the Gulf of Carpentaria and dissipating on 28 March.

References

  1. ↑ "Weekly Tropical Climate Note". Bureau of Meteorology. March 12, 2019. Retrieved March 8, 2021.
  2. ↑ "Weekly Tropical Climate Note". Bureau of Meteorology. March 19, 2019. Retrieved March 7, 2021.
  3. ↑ "Tropical Cyclone Trevor". Bureau of Meteorology. Retrieved March 9, 2021.
  4. ↑ "Tropical Cyclone Trevor" . Retrieved March 9, 2021.
  5. ↑ ECHO (March 19, 2019). "Australia, Papua New Guinea - Tropical Cyclone TREVOR update (GDACS, JTWC, BOM, PNGMET, media) (ECHO Daily Flash of 19 March 2019)". ReliefWeb. Retrieved December 23, 2020.
  6. ↑ "Sport: Cyclone delays start of cricket qualifiers in PNG". rnz.co.nz. Radio New Zealand. March 21, 2019. Retrieved December 23, 2020.
  7. ↑ "Impacts of Cyclone Trevor on Goodenough Island, Milne Bay Province" (PDF). United Nations Development Programme. Retrieved January 22, 2019.
  8. ↑ Bureau of Meteorology, Australia [@BOM_au] (March 21, 2019). "Not since Marcia/Lam in 2015 have we had 2 severe cyclones in the Aus region at the same time! #CycloneVeronica in northwest WA is currently Category 4 strength, while #CycloneTrevor in the Gulf of Carpentaria is also likely to intensify to Cat 4 today" (Tweet) – via Twitter.
  9. ↑ "Cyclone Trevor: Eyewitness describes the 'guttural howling roar'". bbc.com. BBC. March 23, 2019. Retrieved December 23, 2020.
  10. ↑ IANS (March 23, 2019). "Cyclone Trevor hits Australia's northern coast". Business Standard India. Business Standard News. Retrieved December 23, 2020.
  11. ↑ Joshua Berlinger, Taylor Ward (March 21, 2019). "Australia braces for twin cyclones as state of emergency declared in Northern Territory". cnn.com. CNN. Retrieved December 23, 2020.
  12. ↑ Lisa Martin (March 23, 2019). "Cyclone Trevor lashes Northern Territory coast with destructive winds". The Guardian. Retrieved January 22, 2021.
  13. ↑ Eric Leister. "Trevor to threaten Northern Territory after causing damage, flooding and power cuts in Cape York". accuweather.com. AccuWeather. Retrieved December 23, 2020.
  14. ↑ Eric Barker, Brendan Mounter (July 13, 2019). "Cape York community's fight to save Iron Range rainforest devastated by Cyclone Trevor". abc.net.au. ABC. Retrieved December 23, 2020.
  15. ↑ http://www.bom.gov.au/cyclone/tropical-cyclone-knowledge-centre/understanding/tc-names/ [ bare URL ]
  16. ↑ "Tropical Cyclone Operational Plans | World Meteorological Organization".
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