Typhoon Hagupit (2014)

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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

A tropical disturbance formed about 130 km (81 mi) north of the equator and about 530 km (330 mi) south-southwest of Kosrae in the afternoon of November 29, resulting in the Joint Typhoon Warning Center (JTWC) issuing a Tropical Cyclone Formation Alert on the next day for consolidating under favorable upper-level conditions. [12] [13] Early on December 1, the Japan Meteorological Agency (JMA) upgraded it to a tropical depression, and so did the JTWC designating it as 22W. [14] [15] Only six hours later, the JMA upgraded the system to a tropical storm and named it Hagupit, as well as the JTWC, owing to a consolidating low-level circulation center (LLCC) with tightly curved banding wrapping into the system. [4] [16] However, the RSMC best track data indicated that the system had been already a tropical depression since November 30 and a tropical storm early on December 1. [17] With low vertical wind shear and excellent radial outflow, Hagupit consolidated further on December 2 and was upgraded to a severe tropical storm by the JMA and a typhoon by the JTWC at noon. [5] [18] Late on the same day, the JMA upgraded it to a typhoon when it began to track west-northwestward along the southern periphery of the subtropical ridge. [19]

A swath of GPM/GMI precipitation rates over Typhoon Hagupit

Remaining in a favorable environment, Hagupit underwent rapid deepening in the afternoon on December 3 and as a result, the JTWC upgraded it to a super typhoon due to the system depicting a significant eye. [20]

The PAGASA named the typhoon Ruby as it entered the Philippine Area of Responsibility early on December 4. [21] Simultaneously, Hagupit presented the very tightly curved and deep convective banding with a clear 35 km (22 mi) eye, which 1-minute maximum sustained winds reached 285 km/h (177 mph), equivalent to Category 5 of the Saffir–Simpson hurricane wind scale (SSHWS). [22] The JTWC also forecast that Hagupit would become as strong as Typhoon Haiyan, but it failed to intensify further. [23] The JMA analyzed that Hagupit had reached peak intensity at 06:00 UTC, with the 10-minute maximum sustained winds at 215 km/h (134 mph) and the central pressure at 905 hPa (26.72 inHg). [6] However, the system then started an eyewall replacement cycle and due to moderate easterly vertical wind shear, became less symmetric, with the bulk of the deep convection displaced over the western semi-circle. [24]

Typhoon Hagupit approaching the Philippines on December 6 Hagupit 2014-12-06 0500Z.jpg
Typhoon Hagupit approaching the Philippines on December 6

As Hagupit slowed down and continued a weakening trend, the eye became cloud-filled early on December 5, and as a result, was no longer equivalent to Category 5 of the SSHWS. [25] [26] Because of a robust poleward outflow channel into the mid-latitude westerlies to the north, the eye became clearer and was surrounded by a symmetric annulus of intense convection; the JMA also indicated the brief intensification at noon. [27] Moreover, a slight break in the steering and the zonal flow along the southern periphery of the mid-latitude trough lacked the dynamics to influence Hagupit, making the typhoon move westward very slowly. [28] Outflow in the southeast quadrant got hampered due to subsidence associated with an upper-level trough, resulting in a cloud-filled eye again. Thus, Hagupit weakened further, causing the JTWC to downgrade it to a typhoon early on December 6. [7] [29] At 21:15 PST (13:15 UTC), Typhoon Hagupit made landfall over Dolores, Eastern Samar, with the 10-minute maximum sustained winds of 165 km/h (103 mph). [8] [17] Half a day later, the system made its second landfall over Cataingan, Masbate and turned west-northwestward. [30]

Owing to land interaction and its slow movement, the JMA downgraded Hagupit to a severe tropical storm on December 7 at 21:00 UTC. [31] The JTWC also downgraded Hagupit to a tropical storm early on December 8 right before the fragmented system made its third landfall over Torrijos, Marinduque. [32] [33] After its fourth landfall over San Juan, Batangas at 17:45 PST (09:45 UTC), the JMA downgraded Hagupit to a tropical storm at noon. [9] [34] On December 9, deep convection over the LLCC weakened significantly when Hagupit arrived at the South China Sea and turned westward, although good poleward outflow channel tapping into the mid-latitude westerlies helped the system sustain its minimal tropical storm intensity. [10] Soon after that, due to a marginally favorable environment, deep convection over the partially exposed LLCC increased again. [35] Hagupit briefly intensified in the afternoon on December 9, under moderate vertical wind shear offset by vigorous poleward outflow into the strong westerly flow to the north. [36] However, deep convection began to be displaced from the partially exposed LLCC one day after. [37]

On December 11, despite favorable poleward outflow, Hagupit was not able to overcome upper-level subsidence in the southeastern quadrant and increasing vertical wind shear, as low-level northeasterly winds became completely out of phase with the upper-level. [38] Consequently, the JMA downgraded it to a tropical depression, and so did the JTWC. [11] [39] The JTWC issued its final warning on Hagupit due to the LLCC of Hagupit being displaced from the deep convection and rapidly unraveling early on December 12. [40] Hagupit eventually dissipated southeast of Ho Chi Minh City, Vietnam, before noon on December 12. [41] [42]

Preparations

PSWS Map in the Philippines during the passage of Typhoon Hagupit (Ruby) PSWSHagupitRuby.png
PSWS Map in the Philippines during the passage of Typhoon Hagupit (Ruby)

Typhoon Hagupit, also known as Typhoon Ruby, entered the PAR late on December 3, at the same time it was upgraded into a Category 5 super typhoon. With this, the NDRRMC reported that schools were suspended in the areas: Samar, Biliran and Tacloban during December 4–5. [43] On December 5, the NDRRMC had put up Signal Warnings No. 1 and 2 from the lower part of Luzon to the upper part of Mindanao. Rough seas and gale-force winds were warned over the seaboards over the eastern part of the country. [44] The Department of Health went under Code Red alert at DOH-retained hospitals in regions expected to be hit by the typhoon starting on December 6. [45] At the same time, PAGASA has put up Signal No. 3 warnings over Samar and were expecting storm surge up to 4 metres high. [46] Residents in at least 42 areas in Bicol and Visayas took precautionary measures against possible storm surge due to Ruby. As of 7:30 a.m, Project NOAH said three of the 42 are under Storm Surge Advisory (SSA) 3, 11 are under SSA 2, and the rest are under SSA 1. SSA 3 involves waves of up to four meters above sea level; SSA 2 three meters; and SSA 1 two meters. [47] It was also reported that schools and businesses were closed from December 5–6 in places in Visayas and southern Luzon. [48]

Because of its slow movement, preparations were further warned in areas such as southern Luzon and western Visayas. The PAGASA and NDRRMC warned that classes and businesses were suspended again during December 8–9 in Regions III, IV-A, IV-B and NCR. [49] Early on December 8, the PAGASA had issued a Signal No. 2 warning over Metro Manila and the MMDA has also been put on red alert because of the typhoon. [50] On December 8, the NDRRMC had reported that other regions such as Regions I, V, VII and XIII has no classes during December 8–9. [51]

Impact

As a weakening Category 3 typhoon, Hagupit first made landfall over Dolores, Eastern Samar on December 6. [52] Because of its slow movement, Signal Warning No. 3 were still up in some places in Visayas. The next day, Hagupit made its second landfall over Cataingan, Masbate. [53]

As of December 19, at least 18 people had been confirmed dead by the typhoon, leaving nearly 916 injured according to the NDRRMC. Total financial loss were calculated at PhP5.09 billion (US$114 million). [54]

Retirement

The name Ruby was the replacement for the name Reming, which was retired by PAGASA after its 2006 incarnation. Despite being used for the first time, PAGASA announced that the name Ruby would be retired from its naming lists after incurring over PhP1 billion in damages. [55] The name Rosita has been selected by PAGASA to replace Ruby for the 2018 season, which was itself retired after the season and replaced by Rosal, which was first used in 2022. [56] [57]

See also

Other similar comparisons to Hagupit:

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References

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  2. ↑ Freedman, Andrew (December 4, 2014). "Super Typhoon Hagupit poses deadly risks to Philippines, raises specter of Haiyan". Mashable. Retrieved January 1, 2015.
  3. ↑ (hə-goo-PEET, [hɐguˈpit]; Filipino word meaning "lashing or flogging")
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  32. ↑ "Prognostic Reasoning for Tropical Storm 22W (Hagupit) Warning Nr 29". Joint Typhoon Warning Center. Archived from the original on December 11, 2014. Retrieved December 11, 2014.
  33. ↑ "Severe Weather Bulletin No. 18". PAGASA. Retrieved December 8, 2014.
  34. ↑ "RubyPH Update: as of 05:45 PM, 08 December 2014". PAGASA. Retrieved December 8, 2014.
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  39. ↑ "Prognostic Reasoning for Tropical Depression 22W (Hagupit) Warning Nr 43". Joint Typhoon Warning Center. Archived from the original on December 13, 2014. Retrieved December 13, 2014.
  40. ↑ "Tropical Depression 22W (Hagupit) Warning Nr 45". Joint Typhoon Warning Center. Archived from the original on December 13, 2014. Retrieved December 13, 2014.
  41. ↑ "Marine Weather Warning for GMDSS Metarea XI 2014-12-12T06:00:00Z". WIS Portal – GISC Tokyo. Japan Meteorological Agency. Retrieved December 13, 2014.
  42. ↑ "Marine Weather Warning for GMDSS Metarea XI 2014-12-12T12:00:00Z". WIS Portal – GISC Tokyo. Japan Meteorological Agency. Retrieved December 13, 2014.
  43. ↑ "SitRep No. 01 re Preparedness Measures for TY "RUBY" (HAGUPIT)" (PDF). NDRRMC. Retrieved December 4, 2014.
  44. ↑ "SitRep No. 03 re Preparedness Measures for TY "RUBY" (HAGUPIT)" (PDF). NDRRMC. Retrieved December 5, 2014.
  45. ↑ "All hands on deck in govt hospitals in areas threatened by Ruby". GMA News. Trisha Macas. Retrieved December 5, 2014.
  46. ↑ "Signal No. 3 up over three provinces as Ruby moves toward Eastern Visayas". GMA News. Retrieved December 5, 2014.
  47. ↑ "Storm surge warnings up in 42 areas". GMA News. Retrieved December 5, 2014.
  48. ↑ "List of class and work suspensions for Dec. 5 and 6". GMA News. Retrieved December 5, 2014.
  49. ↑ "List of Dec. 8–9 class suspensions due to Typhoon Ruby". GMA News. Retrieved December 6, 2014.
  50. ↑ "Signal No. 2 raised over Metro Manila; NCR to feel Ruby's effects Monday evening". GMA News. Retrieved December 8, 2014.
  51. ↑ "SitRep No. 09 re Effects of TY "RUBY" (HAGUPIT)" (PDF). NDRRMC. Retrieved December 8, 2014.
  52. ↑ "Typhoon Ruby makes first landfall in Dolores, Eastern Samar". Philippine Daily Inquirer. Retrieved December 6, 2014.
  53. ↑ "Ruby makes second landfall, seven areas under Signal No. 3". GMA News. Retrieved December 7, 2014.
  54. ↑ "SitRep No. 27 re Effects of Typhoon "Ruby" (Hagupit)" (PDF). National Disaster Risk Reduction and Management Council. December 19, 2014. Archived (PDF) from the original on December 19, 2014. Retrieved January 1, 2015.
  55. ↑ "Ruby faces removal from storm list". Sun Star. Archived from the original on December 10, 2014. Retrieved December 20, 2014.
  56. ↑ "Pagasa kills names of killer typhoons". Philippine Daily Inquirer. February 8, 2015. Archived from the original on February 9, 2015. Retrieved February 9, 2015.
  57. ↑ "Philippine Tropical Cyclone Names". Philippine Atmospheric, Geophysical and Astronomical Services Administration. Archived from the original on February 1, 2015. Retrieved February 1, 2015.
Typhoon Hagupit (Ruby)
Hagupit 2014-12-04 0438Z.jpg
Typhoon Hagupit shortly before peak intensity on December 4
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