https://journal.uii.ac.id/JSTL <p style="text-align: justify;">Jurnal Sains &amp; Teknologi Lingkungan (JSTL) published twice a year in January and June is a scientific journal that publishes scientific research papers and ideas in the field of science and technology related to environmental issues. The journal covers typical subjects of environmental sciences and technologies such as.: Drinking water treatment, wastewater treatment, solid waste treatment, solid waste management, cleaner production, air pollution management, resource recovery, water pollution, soil contamination, and other relevant fields.</p> en-US <p>Authors who publish with this journal agree to the following terms:</p><ol type="a"><li>Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a <a href="http://creativecommons.org/licenses/by-sa/4.0">Creative Commons Attribution License</a> that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</li><li>Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.</li><li>Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See <a href="http://opcit.eprints.org/oacitation-biblio.html" target="_new">The Effect of Open Access</a>).</li></ol> [email protected] (Prof. Eko Siswoyo, Ph.D.) [email protected] (Diah Ayu Prawitasari, S.T., M.T.) Wed, 03 Jun 2026 02:49:14 +0000 OJS 3.3.0.10 http://blogs.law.harvard.edu/tech/rss 60 https://journal.uii.ac.id/JSTL/article/view/45493 <p><em>Operational flight safety at Juanda International Airport relies heavily on the accuracy of short-term weather predictions (nowcasting), particularly in anticipating significant convective weather phenomena. This study aims to evaluate the performance of six thermodynamic instability indices (CAPE, K-Index, Lifted Index, Total-Totals, Showalter Index, and SWEAT) derived from 00.00 UTC radiosonde data in predicting Thunderstorm events occurring between 00.00–06.00 UTC. Using observational data from September 2024 to August 2025, verification was conducted through visual distribution analysis (Box Plot) and statistical contingency table scores (POD, FAR, CSI). Seasonal analysis shows that instability indices exhibit higher sensitivity during the Rainy Season (DJF) compared to the Dry Season (JJA), consistent with the greater frequency of convective events in that period. Quantitatively, the Lifted Index (LI) demonstrates relatively superior validation performance, indicated by the highest Critical Success Index (CSI) among all indices. This suggests that stability parameters based on parcel temperature differences are more representative of local atmospheric conditions than purely energy-based parameters such as CAPE. However, the generally low CSI values (&lt; 0.2) indicate that these indices still have limited sensitivity in capturing local atmospheric dynamics at Juanda, as reflected by the relatively high occurrences of Misses and False Alarms. This study recommends prioritizing the use of LI, while further investigation on local threshold adjustments and extending the temporal scale of analysis is necessary to improve predictive performance.</em></p> Rayhan Rafi, Yusron Faiz Athallah, Yosafat Donni Haryanto Copyright (c) 2026 https://journal.uii.ac.id/JSTL/article/view/45493 Wed, 03 Jun 2026 00:00:00 +0000