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All Journal Jurnal Perikanan dan Kelautan Jurnal Fisika Unand Jurnal Sains & Teknologi Modifikasi Cuaca Jurnal Meteorologi Klimatologi dan Geofisika Referensi : Jurnal Ilmu Manajemen dan Akuntansi Indonesian Physical Review Jurnal Edueco Best Journal (Biology Education, Sains and Technology) Jurnal Humaniora Teknologi Jurnal Humaniora Teknologi Jurnal Masyarakat Maritim INVEST : Jurnal Inovasi Bisnis dan Akuntansi Jurnal Nasional Holistic Science ProBisnis : Jurnal Manajemen Proceeding International Conference on Malay Identity Best Journal of Administration and Management EDUCTUM: Journal Research Journal of Economics and Social Sciences Jurnal Manajemen Dan Akuntansi Medan Jurnal Widya Climago Jurnal Anoa Keperawatan Mandala Waluya Proceeding Of International Conference On Education, Society And Humanity Jurnal Perikanan dan Kelautan Jurnal Pengabdian Masyarakat Madani
Fadlan, Ahmad
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Journal : Jurnal Fisika Unand

 1 
Tinjauan Klimatologis Kejadian Banjir Bandang di Kabupaten Lahat, Sumatera Selatan Tanggal 5 Juli 2023 Mediany, Shinta; Haryanto, Yosafat Donni; Fadlan, Ahmad
Jurnal Fisika Unand Vol 14 No 3 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.3.279-290.2025

Abstract

BPBD reported that a flash flood occurred in Lahat Regency due to high rainfall in the early hours of Wednesday, July 5, 2023. This led to an overflow of the Lematang River, causing flooding that submerged roads and parts of residential areas. Therefore, research is essential to understand atmospheric dynamics and review climatological conditions during the flash flood event in Lahat Regency, covering Pulau Pinang District, Lahat District, and Mulak Sebingkai District. This research is expected to serve as a scientific basis for mitigation and adaptation measures against hydrometeorological disasters. Global phenomena such as the Madden–Julian Oscillation (MJO), El Niño Southern Oscillation (ENSO), and monsoon activity have been analyzed. The analysis of local and regional-scale meteorological parameters was conducted using atmospheric reanalysis datasets from JRA-3Q, NCEP/NCAR, and NCICS. Additionally, a climatological review was carried out based on rainfall data from several cooperative rain gauge stations around the affected area, supplemented with GSMaP satellite data. The study indicates that the flash flood was caused by heavy to very heavy rainfall in the surrounding areas. This rainfall resulted from several factors, including the active MJO over the Indian Ocean, wind convergence, and the presence of the Intertropical Convergence Zone (ITCZ) extending along the western part of Sumatra. The presence of a low-pressure area enhanced the potential for convective cloud formation, further intensified by atmospheric moisture levels exceeding 80% at the 850 mb layer, increasing water vapor content in the upper atmosphere. A historical data review shows that, climatologically, the rainfall during the flash flood event represented the highest recorded daily maximum rainfall for July within the observation period, surpassing pentad and decadal averages. The influence of global, regional, and local-scale phenomena contributed to the increased rainfall intensity in the flash flood-affected area.
Co-Authors , Rahmad Sembiring Adhitiansyah, Daffa Alamsyah, Tegar Ali, Nurbaiti Anisa Purnamasari Ariwibowo, Fajar Sidiq Cahyana, Atma Dita, Narni Eka Surya Fitriani Faizal Wempy Fasya , Nadya Handoko Tarigan, Muhammad Harahap, Rona Riski Haryanto, Yosafat Donni Hasanah, Nadila Huswatun Hutasoit, Chatrin Nerfiani Iskandar, Wildan Bithorik Alhak Ismail, Prayoga Karo, Ruth Silvania Br Khairul Azmi Lingga, Silvia Wardana Br Lubis, Nurul Anggita Lubis, Rizal P Lubis, Rizal P. Manurung, Titah Enjelina Maulana, Deni Akbar Mediany, Shinta Muhamad Dani P. Lubis, Rizal Pane, Sanusi Ghazali Pratama, Siswa Ramadhan, Anggia Ramadhan, Faisal Ramadhani, Bintang Kurnia Rangkuty, Ika Herawaty Rosida, Sisi Sadewo, Aji Sainsfikri, Rijal Sepbrina, Kiky Sihombing, Chintani Silitonga, Andreas Kurniawan Sinulingga, Khairul Anwar Sosaidi, Dedi Sucahyono Sri Wahyuni Suhendi Suhendi Suhendi Surya Fitriani, Eka Sylvana, Lestari Tarigan, Muhammad Handoko Tarigan, Vani Eorita Thalib, Sophya Cindyka Lestari Triatmoko, Danu Usman, Dian Fadillah Uswatun Hasanah Veanti, Desak Putu Okta Yunita, Nindya