Cyclone Val

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Severe Tropical Cyclone Val
Category 4 severe tropical cyclone (Aus scale)
Category 4 (Saffir–Simpson scale)
File:Cyclone Val 1991.jpg
Satellite image of Cyclone Val (center) and Cyclone Wasa
Formed December 4, 1991 (1991-12-04)
Dissipated December 17, 1991 (1991-12-17)
(Extratropical after December 13)
Highest winds 10-minute sustained: 165 km/h (105 mph)
1-minute sustained: 230 km/h (145 mph)
Lowest pressure 940 hPa (mbar); 27.76 inHg
Fatalities 16 direct
Damage $278 million (1991 USD)
Areas affected Samoan Islands, Cook Islands
Part of the 1991–92 South Pacific cyclone season

Severe Tropical Cyclone Val, also known as Cyclone Val, was a cyclone that struck Western Samoa and American Samoa on December 4, 1991. Lasting until December 13, the cyclone moved in a west-to-east trajectory. The cyclone lasted for five days in American Samoa and was designated by the United States Government as a major disaster on December 13, 1991. Western Samoa suffered more damage than American Samoa.[1][2][3][4] The cyclone devastated the islands with 150-mile-per-hour (240 km/h) winds and 50-foot (15 m) waves. The overall damages caused by Cyclone Val in American Samoa have been variously assessed. One estimate put the damages at $50 million in American Samoa and $200 million in Western Samoa due to damage to electrical, water, and telephone connections and destruction of various government buildings, schools, and houses.[5][6]

Meteorological history

File:Val 1991 track.png
Track map of Tropical Cyclone Val, based on data from the Joint Typhoon Warning Center.

On December 1, 1991 the Fiji Meteorological Service's Nadi Tropical Cyclone Warning Center (TCWC Nadi) started to monitor a small circulation, that had developed along the Intertropical Convergence Zone just to the north of Tokelau as a result of a surge within the westerlies.[7][8] Over the next two days the system moved westwards towards Rotuma and Tuvalu where it lay near the centre of an upper level outflow mechanism.[8] During December 4, as the system continued to develop, TCWC Nadi classified it as a depression while it was located just to the southeast of Tuvalu and moving towards the northwest. Early the next day the system was named Val by TCWC Nadi, after it had developed the characteristics of a tropical cyclone and become a category 1 tropical cyclone on the Australian tropical cyclone intensity scale.[9][10] During that day the United States Naval Western Oceanography Center (NWOC) designated the system as Tropical Cyclone 06P and started to issue advisories, while Val started to move towards the south-southeast after the upper level north-westerly steering winds had increased.[10][11] During December 6, the NWOC reported that the system had become equivalent to a category 2 hurricane on the Saffir-Simpson hurricane scale as Val continued to steadily intensify and moved south-eastwards, away from Tuvalu and towards Western Samoa.[7][12] Early on December 7, TCWC Nadi reported that the system had become a category 3 severe tropical cyclone as the cyclone started to be steered southwards by upper-level northerlies.[7][9]

Later that day TCWC Nadi reported that Val had reached its peak 10-minute sustained windspeeds of about 165 km/h (105 mph), which made it a category 4 severe tropical cyclone on the Australian scale.[9][13] The system subsequently made landfall on the Western Samoan island of Savaii at around 1800 UTC, before the NWOC reported that the cyclone had peaked with 1-minute sustained windspeeds of about 230 km/h (145 mph), which made it equivalent to a category 4 hurricane on the SSHS.[10][12] After Val had passed over the island weakening upper level winds and caused the system to slow down, before it started to move erratically and made a sharp clockwise loop which almost brought it over Savaii for a second time.[10][14] During December 9, Val completed its loop and started to move eastwards while starting to gradually weaken, before it passed over the American Samoan island of Tutuila early the next day.[14] After passing over American Samoa, Val initially threatened the Southern Cook Islands but changed direction during December 11 and curved more towards the south-southeast while continuing to weaken, which spared it the worst of the cyclone.[13] During December 12, TCWC Nadi reported that Val had weakened into a category two tropical cyclone and passed the primary warning responsibility for the system to the New Zealand Meteorological Service (TCWC Wellington) after Val had moved out of its area of responsibility.[13] Shortly after moving into TCWC Wellington's area of responsibility, Val transitioned into an extratropical depression.[14] Storm force winds subsequently persisted around the center of Val's remnants for the next 3 days, before the system was captured and sheared apart by strong environmental westerlies associated with the Antarctic Circumpolar Current as it approached 50°S.[14]

Preparations and impact

The cyclone destroyed over 65% of the residential homes on American Samoa and even more on the Samoan islands of Upolu and Savai'i.[3] Cyclone Val cut communications and power lines on the islands. It devastated fire stations, hospitals, government buildings, schools, and churches, particularly wooden buildings of the pre World War I colonial era. Cyclone Val destroyed over 80% of agricultural crops.[3] One of the first areas hit was the Western Samoan island of Savai'i, which was described as looking like an atomic bomb had hit. A local remarked that "there was no green, no buildings standing, no shelter; just total and complete devastation."[3] Cyclone Val was reported to have killed 17 people and left 4,000 people homeless in American Samoa alone.[3] Cyclone Val was assessed to have had an impact 50% worse than Cyclone Ofa,[3] costing about $50 million in damage and putting a severe strain on agricultural production and the livelihoods of farmers on the islands.[6] In Fagatele Bay at Tutuila Island, where Cyclone Val made a direct pass, the coral reef was completely destroyed. A large strip of the coast was also eroded. In response to this disaster, the NOAA deputed an assessment team to survey the damage to the reefs.[15] In Tutuila, which accounts for 68% of American Samoa, the funicular railway, the longest single span cable way in the world, was permanently put out of service by Cyclone Val.[16] The cable had previously connected Pago Pago harbor with the TV tower erected on Mt. Alava (491m). The TV tower at Utulei, one of the three TV channels in Samoa, was completely ruined by Cyclone Val, resulting in it being cannibalized for parts to maintain the two remaining channels.[17] The Fagalele Boy's School, one of the oldest European-style buildings on the island in Leone, was destroyed by Cyclone Val.[18] According to a report of Greenpeace mission, the airport of Western Samoa was also devastated. The cyclone killed 15 people in Western Samoa, and one person in American Samoa. Preliminary estimates put the damages at US $200 million in Western Samoa and US $50 million in American Samoa.[5]

The damage caused by Cyclone Val was severe, as it occurred 18 months after Cyclone Ofa (February 1990). Food production was halted; forests were damaged, and animals and birds were lost. The forest loss was as severe as 45% of Savai'i's timber logs. The damage that Cyclone Val caused over the entire region of Samoa was reported to be US$368 million.[19]

People were devoid of electricity for weeks and water supply for many days and depended on emergency aid. In Western Samoa (islands of Savai'i, Manono and Upolu), the percentage of damaged houses was as high as 80%.[20]

File:Map of Samoa.png
Map of Samoa and American Samoa

Val was reported as the worst cyclone to hit the Samoas in 100 years (since the 1889 hurricane), as measured by the intensity of the wind and the severity of the damage it caused to the islands.[21] The President of the United States declared the event as a "major disaster", for which federal assistance was provided.[22] The severity of Cyclone Val was aptly described by a local resident who stated: "But this Cyclone was stronger than me. For the first time I felt defeated I had never felt that before. I felt it was personal between me and Cyclone. I got depressed afterward."[23]

Aid was provided to the affected zones based on a categorization as Category A, B, C, D, E and F. The categories are defined by the degree of damage suffered. Assistance covered individuals, households, and the State and local governments. The assistance encouraged private, nonprofit organizations (NGOs) to meet and discuss expense-related emergency work and the repair or replacement of disaster-damaged infrastructure. Assistance provided "Hazard Mitigation Grants" to secure life and property from hazards.[2]

New Zealand and Australia provided considerable assistance to the affected population and helped with the reconstruction and recovery of infrastructure facilities. Samoans in the United States, Australia, and New Zealand helped finance the recovery by way of remittances to their relatives who suffered on the island.[19]

Other islands

Between December 4–5, as the system developed strong northwesterly winds associated with Val and the intertropical convergence zone, caused some damage at Funafuti and several other atolls in the Tuvalu group.[7][24]

During December 6, gale force winds were observed at the Atafu meteorological station, after a gale warning had been issued for Tokelau by TCWC Nadi.[7] The winds gradually decreased during that day, as Val curved towards the southeast and passed about 320 km (200 mi) to the southwest of Tokelau.[7] Squally conditions subsequently persisted over the islands for the next few days, with Fakaofo recording gale force winds on December 10.[7]

During December 6, TCWC Nadi issued a gale warning for Wallis Island, because Val posed a reasonable threat to the island as it moved south-eastwards.[7] The gale warning was subsequently cancelled during the next day, as the system moved away from Wallis.[7] The island did not experience any gale force winds, while some minor damage was reported with fallen trees and minor flooding of coastal areas was reported.[7]

Aftermath

Western Samoa

American Samoa

Law suit

In 1991, American Samoa purchased a $45 million "all risk" insurance policy from the firm Affiliated FM Insurance. The firm would only pay up to $6.1 million for the damages, arguing that the insurance did not cover water damage, only that caused by the wind.[6] Attorney William Shernoff investigated and discovered that the insurance company had altered American Samoa's insurance policy to exclude damages caused by "wind-driven water", despite the fact that it still covered cyclones.[6] The case was taken to court, and in 1995, the jury awarded the American Samoa Government $28.9 million. Soon after, the amount was doubled to $57.8 million to include punitive damages. The total damages awarded by the judgment was $86.7 million, which the judge stated to be "the largest insurance bad faith verdict in the state of California in 1995".[6]

The revenues of American Samoa for the fiscal years 2002 and 2003, which had been showing a downward trend, registered a substantial increase attributed to the insurance settlement of claims made to cover the damages caused by Cyclone Val. This resulted in fiscal surpluses. The deficit of US $23.1 million at the start of 2001 changed to a surplus of US $43.2 million by end of 2003.[25]

References

  1. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ 6.0 6.1 6.2 6.3 6.4 Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ 8.0 8.1 Lua error in package.lua at line 80: module 'strict' not found.
  9. ↑ 9.0 9.1 9.2 Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ 10.0 10.1 10.2 10.3 Lua error in package.lua at line 80: module 'strict' not found.
  11. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  12. ↑ 12.0 12.1 Lua error in package.lua at line 80: module 'strict' not found.
  13. ↑ 13.0 13.1 13.2 Lua error in package.lua at line 80: module 'strict' not found.
  14. ↑ 14.0 14.1 14.2 14.3 Lua error in package.lua at line 80: module 'strict' not found.
  15. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  16. ↑ Stanley, p. 475
  17. ↑ Stanley, pp. 475–477
  18. ↑ Stanley, p. 480
  19. ↑ 19.0 19.1 Ward, pp. 20–21
  20. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  21. ↑ Ward, pp. 17–21
  22. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  23. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  24. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  25. ↑ Lua error in package.lua at line 80: module 'strict' not found.

Bibliography

  • Lua error in package.lua at line 80: module 'strict' not found.
  • Lua error in package.lua at line 80: module 'strict' not found.

External links


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