Intense Tropical Cyclone Edzani
Very intense tropical cyclone (SWIO scale)
Category 5 tropical cyclone (SSHWS)
Cyclone Edzani on January 7
FormedJanuary 1, 2010
DissipatedJanuary 11, 2010
Highest winds10-minute sustained: 220 km/h (140 mph)
1-minute sustained: 260 km/h (160 mph)
Lowest pressure905 hPa (mbar); 26.72 inHg
FatalitiesNone reported
DamageNone
Areas affectedNo land areas
Part of the 2009–10 Australian region cyclone season and the 2009–10 South-West Indian Ocean cyclone season

Cyclone Edzani (BOM Designation:03U, JTWC designation:07S) was the strongest storm of the 2009–10 South-West Indian Ocean cyclone season], and one of the strongest cyclones of the year 2010.

Meterological history

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Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
  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
  Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

Early on January 1 2010, TCWC Perth reported that Tropical Low 03U had developed about 1200 km (745 mi) to the southwest of Jakarta, Indonesia.[1] The low was being moved slowly by a mid level ridge of pressure located to the southeast.[2] The tropical low was thought to be in a favorable environment to develop further with moderate vertical wind shear and was benefiting from a good mid level equatorward outflow.[2] 03U continued to develop with deep convection near the Low Level Circulation Center despite the moderate vertical wind shear. [3] 03U continued to benefit from a monsoonal flow through the shear. [4] 03U continued to drift westward, as it passed over longitude 90E on January 4. [5] RSMC La Reunion then took over responsibility of 03U, and dubbed it Tropical Disturbance 08. [6] 08 became ill-defined, and was under strong easterly shear on January 5. [7] The Mauritius Meteorological Center named Tropical Disturbance 08 as Moderate Tropical Storm Edzani on January 6.[8] Edzani was upgraded on January 7 to a Severe Tropical Storm, as it continued west south-west around a subtropical ridge. [9] Just hours after becoming Severe Tropical Storm, Edzani became Tropical Cyclone Edzani. [10] Yet again on January 7, Edzani was upgraded as it continued to intensify, becoming Intense Tropical Cyclone Edzani. [11] Edzani had turned more southwestward due to the subtropical ridge located to it's southeast. [11] On August 8, intensification began to slow as Edzani was expected to move into cooler waters. [12] Edzani continued to intensify, and midday on August 8, Edzani was upgraded to Very Intense Tropical Cyclone strength. [13] Edzani reached it's max intensity that day, as RSMC La Reunion noted that the eye temperature began to warm. [14] Edzani began to weaken on January 9, and underwent an eyewall replacement cycle. [15] On January 10, Edzani weakened to tropical cyclone status, and the eye was lost. [16] Westerly shear increased over Edzani as it began to track more southward, and it became a Severe tropical storm. [17] Edzani began extratropical transition on January 11. [18] It became fully extratropical the next day, and RSMC La Reunion issued it's last advisory on the 13th.

Impact and records

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See also

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References

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  1. ^ "Tropical Cyclone Outlook: TCWC Perth: 2010-01-01". Bureau of Meteorology. 2010-01-01. Retrieved 2010-01-13.
  2. ^ a b "TCWC Perth Technical Bulletin 2010-01-02 00z". Bureau of Meteorology. 2010-01-02. Retrieved 2010-01-13.
  3. ^ "TCWC Perth Technical Bulletin 2010-01-02 12z". Bureau of Meteorology. 2010-01-02. Retrieved 10 September 2010.
  4. ^ "TCWC Perth Technical Bulletin 2010-01-03 00z". Bureau of Meteorology. 2010-01-03. Retrieved 10 September 2010.
  5. ^ "TCWC Perth Technical Bulletin 2010-01-04 00z". Bureau of Meteorology. 2010-01-04. Retrieved 10 September 2010.
  6. ^ "RSMC La Reunion ITCZ advisory 04-01-2010 11H00 UTC". RSMC La Reunion. Retrieved 11 September 2010.
  7. ^ "RSMC La Reunion ITCZ advisory 05-01-2010 11H15 UTC". RSMC La Reunion. Retrieved 11 September 2010.
  8. ^ "RSMC La Reunion Edzani advisory 2010-01-06 0600 UTC". RSMC La Reunion. Retrieved 11 September 2010.
  9. ^ "RSMC La Reunion Edzani advisory 2010-01-07 0000UTC UTC". RSMC La Reunion. Retrieved 11 September 2010.
  10. ^ "RSMC La Reunion Edzani advisory 2010-01-07 0600UTC UTC". RSMC La Reunion. Retrieved 11 September 2010.
  11. ^ a b "RSMC La Reunion Edzani advisory 2010-01-07 1800 UTC". RSMC La Reunion. 2010-01-07. Retrieved 11 September 2010.
  12. ^ "RSMC La Reunion Edzani advisory 2010-01-08 0000 UTC". RSMC La Reunion. 2010-01-08. Retrieved 12 September 2010.
  13. ^ "RSMC La Reunion Edzani advisory 2010-01-08 1200 UTC". RSMC La Reunion. 2010-01-08. Retrieved 12 September 2010.
  14. ^ "RSMC La Reunion Edzani advisory 2010-01-08 1800 UTC". RSMC La Reunion. 2010-01-08. Retrieved 12 September 2010.
  15. ^ "RSMC La Reunion Edzani advisory 2010-01-09 0600 UTC". RSMC La Reunion. 2010-01-09. Retrieved 24 October 2010.
  16. ^ "RSMC La Reunion Edzani advisory 2010-01-10 0600 UTC". RSMC La Reunion. 2010-01-10. Retrieved 24 October 2010.
  17. ^ "RSMC La Reunion Edzani advisory 2010-01-11 0600 UTC". RSMC La Reunion. 2010-01-11. Retrieved 24 October 2010.
  18. ^ "RSMC La Reunion Edzani advisory 2010-01-11 1800 UTC". RSMC La Reunion. 2010-01-11. Retrieved 24 October 2010.
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