Wikipedia

Tropical Storm Ma-on

(Redirected from 2022 Laos floods)
This article is about the 2022 tropical storm. For other storms of the same name, see List of storms named Ma-on and List of storms named Florita.

Severe Tropical Storm Ma-on, known in the Philippines as Severe Tropical Storm Florita, was a tropical cyclone that impacted the Philippines in August 2022. The ninth named storm of the 2022 Pacific typhoon season, Ma-on originated as a disturbance over in the Pacific Ocean on August 18, and was upgraded to a tropical depression during the next day. The depression strengthened into a tropical storm receiving the name Ma-on, and became a severe tropical storm late on August 23 before making landfall in the Philippines. It would later make landfall in China and Vietnam on August 25. Ma-on weakened back to a tropical depression and due to unfavorable conditions it dissipated on August 26, 2022.

Severe Tropical Storm Ma-on (Florita)
Severe Tropical Storm Ma-on at peak intensity on August 24
Meteorological history
FormedAugust 20, 2022
DissipatedAugust 26, 2022
Severe tropical storm
10-minute sustained (JMA)
Highest winds100 km/h (65 mph)
Lowest pressure980 hPa (mbar); 28.94 inHg
Category 1-equivalent typhoon
1-minute sustained (SSHWS/JTWC)
Highest winds120 km/h (75 mph)
Lowest pressure984 hPa (mbar); 29.06 inHg
Overall effects
Fatalities7
Damage$46.2 million (2022 USD)
Areas affectedPhilippines, China, Vietnam, Laos
IBTrACS
Part of the 2022 Pacific typhoon season

The storm caused moderate damage in the Philippines, China and Vietnam.

Meteorological history

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

A disturbance that would eventually become Severe Tropical Storm Ma-on was first noted by the Joint Typhoon Warning Center (JTWC) on August 18, while it was located about 910 km (565 mi) southeast of Taipei, Taiwan.[1] Deep convection associated with the disturbance strong low level persisted.[2] Favourable environment for further development, being offset by warm sea surface temperatures of around 29–30 °C (84–86 °F).[3] During August 19, the Japan Meteorological Agency began tracking a low pressure in the Philippine Sea.[4] The system moved westwards, eventually developing into a tropical depression on August 20.[5] The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) began tracking the system, giving the local name Florita on August 21.[6]

On the same day, the JTWC issued a Tropical Cyclone Formation Alert (TCFA) for the system.[7] Shortly afterwards, the JTWC designated the system as 10W.[8] Satellite imagery indicated that it had formative bands with a low-level circulation center (LLCC).[9] By August 22, the JMA classified the system as a tropical storm and named the storm Ma-on.[10] Later on, the JTWC and PAGASA also upgraded the system into a tropical storm.[11][12] Ma-on began to moved slowly, under the influence of a subtropical ridge off the coast of Luzon.[13] At 18:00 UTC, the JMA upgraded Ma-on to severe tropical storm status.[14] The PAGASA reported that the system intensified into a severe tropical storm on August 23.[15]

At that time, multispectral animated satellite imagery revealed a symmetrical central convection.[16] Ma-on made landfall over Maconacon in the province of Isabela around 10:30 (PHT) (02:30 UTC).[17] The system continued consolidating which allowed it to organized a small microwave eye.[18] Traversing the Luzon Islands before it emerged over the coastal of Ilocos Norte.[19][20][21] Ma-on exited the Philippine Area of Responsibility at 05:00 PHT August 24 (21:00 UTC August 23).[22] Upper-Level near the storm's center struggled to organize due to moderate to strong east-northeasterly shear.[23] An Advanced Scatterometer (ASCAT) pass indicated that the storm was along the southern of the system.[24] Ma-on moved west-northwest and subsequently made second landfall just southwest of Yangjiang, China on August 25.[25] Shortly after the landfall, the JTWC discontinued warnings on the system.[25] Ma-on later become unfavorable of its intensity.[26] As a result, the JMA downgraded the system to a tropical storm at 06:00 UTC that day.[27] Ma-on moved west to the Gulf of Tonkin, and made third and final landfall in Móng Cái City, Quảng Ninh Province in Vietnam on 13:00 UTC.[28] After that, JMA declared that Ma-on weakened to a tropical depression, until it was last noted in Northern Vietnam on August 26.[29][30]

Preparations and impact

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Ma-on making landfall on Luzon on August 23

Philippines

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Ahead of the storm's arrival, PAGASA placed the provinces of Aurora, Isabela and Cagayan under Tropical Cyclone Wind Signal (TCWS) #1 on August 21, 2022.[31] During the next day, PAGASA raised TCWS #2[12] before TCWS #3 was ultimately issued and extended to include other parts of Luzon on August 23.[15] President Bongbong Marcos suspended classes and government work in some areas in Luzon on August 23 and 24 just one day after the opening of full face-to-face classes, two years since the COVID-19 pandemic in the Philippines prompted schools to shift to distance or online learning.[32][33]

The Department of Social Welfare and Development (DSWD) said that 16,654 food packs had been prepared.[34] In Isabela, heavy rains brought by the storm caused four overflow bridges to be impassable.[35] In Cagayan, 10,608 hectares of rice and corn farms were destroyed.[36] In Pampanga, 39 barangays were flooded.[37] In Cordillera, 1,882 search and rescue cop teams were placed on standby.[38]

Power outages were reported in Northern Luzon.[39] Flights from Manila to Bicol were cancelled due to inclement weather.[40] The Philippine Army conducted disaster response operations.[41] The Philippine Coast Guard (PCG) deployed 11 aluminum boats in Marikina City.[42] According to the BJMP, 740 inmates were evacuated.[43] The Metropolitan Manila Development Authority temporarily suspended their number coding scheme.[44]

The NDRRMC reported 17,510 affected people, 4,330 were displaced.[45] At least 4 people were dead,[46] and another 4 were injured.[45] Infrastructure damage was estimated to be ₱571 million (US$10.4 million), while agricultural damage was estimated to be ₱1.86 billion (US$33.6 million).[45][47]

Vietnam

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In Vietnam, Ma-on caused multiple flooded and uprooted trees.[48] 135,000 were planned to evacuate.[49] Ma-on brought heavy rains; Dong Trieu received 76.8 mm (3.02 in) and at least 164 mm (6.5 in) in Dong Son.[50][51] In total 321 households were flooded, with 38 households were deeply flooded in Uông Bí.[50] So far, a total of 3 people were reported killed by the storm.[52]

Total damage in Tiên Yên District is 28 billion dong (US$1.18 million),[53] while in Uông Bí is 11.7 billion dong (US$494,000).[54] In Lang Son total damaged reached 10 billion dong (US$422,000),[55] and in Bac Kan the damage is 4.25 billion dong (US$180,000).[56]

Elsewhere

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In Laos, flash floods exacerbated by Ma-on.[57] Villages along the Nam Ko river have been damaged.[58] Thousands of people are reportedly affected.[59]

Retirement

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See also: List of retired Pacific typhoon names

After the season, the Typhoon Committee announced that the name Ma-on, along with five others will be removed from the naming lists.[60] In the spring of 2024, the name was replaced with Tsing-ma for future seasons.[61]

After the season, PAGASA announced that the name Florita will be removed from their naming lists after this typhoon caused ₱1 billion in damage on its onslaught in the country. On May 5, 2023, the PAGASA chose the name Francisco as its replacement for the 2026 season.[62]

See also

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References

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  1. ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans, 14Z 18 August 2022 (Report). United States Joint Typhoon Warning Center. August 18, 2022. Archived from the original on December 21, 2017. Retrieved August 18, 2022. Alt URL
  2. ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans, 13Z 18 August 2022 (Report). United States Joint Typhoon Warning Center. August 18, 2022. Archived from the original on December 21, 2017. Retrieved August 18, 2022. Alt URL
  3. ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans, 05Z 19 August 2022 (Report). United States Joint Typhoon Warning Center. August 19, 2022. Archived from the original on December 21, 2017. Retrieved August 19, 2022. Alt URL
  4. ^ "WWJP27 RJTD 190000". Japan Meteorological Agency. August 19, 2022. Archived from the original on August 21, 2022. Retrieved August 21, 2022.
  5. ^ "WWJP27 RJTD 201800". Japan Meteorological Agency. August 20, 2022. Archived from the original on August 21, 2022. Retrieved August 21, 2022.
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  7. ^ Tropical Cyclone Formation Alert (Invest 93W) (Report). United States Joint Typhoon Warning Center. August 21, 2022. Archived from the original on March 30, 2022. Retrieved August 21, 2022. Alt URL
  8. ^ Tropical Depression 10W (Ten) Warning No. 1 (Report). United States Joint Typhoon Warning Center. August 21, 2022. Archived from the original on August 21, 2022. Retrieved August 21, 2022. Alt URL
  9. ^ Prognostic Reasoning for Tropical Depression 10W (Ten) Warning No. 2 (Report). United States Joint Typhoon Warning Center. August 22, 2022. Archived from the original on August 22, 2022. Retrieved August 22, 2022.
  10. ^ "RSMC Tropical Cyclone Prognostic Reasoning No. 5 for TS Ma-on (2209)". Japan Meteorological Agency. August 22, 2022. Archived from the original on August 22, 2022. Retrieved August 22, 2022.
  11. ^ Tropical Storm 10W (Ma-on) Warning No. 4 (Report). United States Joint Typhoon Warning Center. August 21, 2022. Archived from the original on August 22, 2022. Retrieved August 21, 2022.
  12. ^ a b "Tropical Cyclone Bulletin #5 for Tropical Storm 'Florita'" (PDF). PAGASA. August 22, 2022. Archived from the original (PDF) on August 22, 2022. Retrieved August 22, 2022. Alt URL
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  27. ^ "RSMC Tropical Cyclone Advisory Name TS 2209 Ma-on (2209) Downgraded from STS". Japan Meteorological Agency. August 25, 2022. Archived from the original on August 25, 2022. Retrieved August 25, 2022.
  28. ^ "Bão vào Quảng Ninh, suy yếu thành áp thấp nhiệt đới".
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  30. ^ "WWJP27 RJTD 260600". Japan Meteorological Agency. August 26, 2022. Archived from the original on August 26, 2022. Retrieved August 26, 2022.
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  33. ^ Kathleen Magramo (August 23, 2022). "Philippines returns to school for just one day as storm forces classrooms in north to close again". CNN. Archived from the original on August 27, 2022. Retrieved August 27, 2022.
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  48. ^ "Prolonged downpours triggered by Storm Ma-on flood streets, houses in northern Vietnam". Tuoi Tre News. August 26, 2022. Retrieved August 28, 2022.
  49. ^ "Vietnamese provinces prepare to evacuate 135,000 people as Storm Ma-on approaches". Tuoi Tre News. August 25, 2022. Retrieved August 28, 2022.
  50. ^ a b Việt -, Hoàng (August 26, 2022). "Nhiều địa bàn tại Quảng Ninh bị ngập lụt, sạt lở sau bão Ma-on". Nhịp sống kinh tế Việt Nam & Thế giới (in Vietnamese). Retrieved August 29, 2022.
  51. ^ "Bão số 3 tan dần, nhiều khu vực được cảnh báo lũ quét". Báo Tài nguyên & Môi trường (in Vietnamese). August 26, 2022. Retrieved August 29, 2022.
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  61. ^ Replacement names of CONSON, KOMPASU, RAI, MALAKAS, MEGI, MA-ON, HINNAMNOR, NORU and NALGAE (PDF) (Report). ESCAP/WMO Typhoon Committee. February 16, 2024. Retrieved August 21, 2024.
  62. ^ "PAGASA".
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