The Analysis Of Atmospheric Dynamics of The Tornado Event In Tanjung Balai Karimun (Case Study: May 14, 2024)
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Published: Jan 2, 2025 |
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Keywords: Cumulonimbus, Himawari-8, ECMWF, ERA5 |
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Abstract
On May 14, 2024, a tornado struck Tanjung Balai Karimun, Riau Islands, causing damage to 77 houses. The event lasted approximately 10 minutes and resulted in significant material losses. To understand this phenomenon, based on the incident, a study was conducted to identify the atmospheric conditions influencing the event. The research methodology includes analyzing global parameters such as the Madden Julian Oscillation (MJO), Outgoing Longwave Radiation (OLR), Nino 3.4 SST Index, and Indian Ocean Dipole (IOD). Additionally, data from Himawari-8 satellite imagery and ERA5 ECMWF reanalysis were utilized to evaluate local parameters such as Convective Available Potential Energy (CAPE), Convective Inhibition (CIN), relative humidity, vorticity, divergence, vertical velocity, and sea surface temperature. The results indicate that global factors had limited influence, while local conditions such as air convergence and intense convective activity played a dominant role in the formation of Cumulonimbus clouds that caused the tornado. This study is expected to support future disaster risk mitigation efforts.
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