DOI: 10.5281/zenodo.15035188
title: 3rd Data Release of Project Severe Weather Archive of the Philippines (SWAP DR3)

description: Project Severe Weather Archive of the Philippines (SWAP) issues its 3rd Data Release or SWAP DR3. It features the following: 





Improvements to the Geographic decimal coordinates (i.e. latitude-longitude pairs) for accuracy purposes,




The number of severe weather events have doubled to more than 1000 cases/events/reports. Due to this, the number of potential sources has been revised from a maximum of 3 sources (DR1 to DR2) to 5 sources for this major release, 




The idea of technical reports was unfortunately scrapped, but was replaced instead in form of preprints/manuscript/journal articles, 




Improvements to the documentation, particularly to the metadata in PDF, have additional "indicators" for accuracy and reliability purposes, and




SWAP DR3 will continue to feature more proximity rawinsonde observations (RAOBs or proximity sounding profiles) as queried and analyzed through SounderPy of Gillett (2024). However, for this major update, we are importing back the SWAP DR2 Soundings for the moment. SWAP DR4 (slated next year) will feature many, if not all, of the sounding cases (apologies for the delay). 



At the moment, we are also conducting an additional research with regards to the hail climatology of the Philippines (Manalo et al. in preparation), and additional case studies; (a) 13 August 2021 Hailstorm in the Province of Bulacan and (b) 27 May 2024 Tornadic Supercell in the Province of Pampanga. The 13 August 2021 Hailstorm case study is already available in arXiv as a preprint (also under review in Springer's APJAS). You can read the manuscript to this link. 

File inclusion of SWAP DR3; 





3 standard CSV file formats containing tornadoes, hail, and waterspout reports (can easily imported to Pandas or GeoPandas),




1 documentation file compiling the severe weather reports/events and containing hyperlinks/sources/evidences. This includes few, basic data visualization of each severe weather phenomena, and




2 zip files containing SWAP DR2's proximity soundings (either observed or from ERA5 Reanalysis queried in SounderPy as mentioned before), limited to several cases of tornadoes and hail events,



Kindly see the attached table I created in this announcement for the versions of Project SWAP and other details. If you have comments, kindly use the SWAP Contact Form below. 






Indexing number of Versions



Description



w/ Zenodo DOI?



Is it citable? 





Version 1.0, 2.0, 3.0, and so on...



Major Data Release/Major Update



Yes



Yes*





Version 1.1, 1.2, 1.3, and so on...



Incremental Update/Patch



Yes



Yes*





Version x.x.1, x.x.2, x.x.3, and so on...



Announcement



Yes



No





*Note: You can just cite all the versions for your ease. See the Additional Description. 
description: No. of Severe Weather Events: 1094*






Before 2010



2010



2011



2012



2013



2014



2015



2016



2017



2018



2019



2020



2021



2022



2023



2024



2025





77



7



19



22



39



38



36



34

49
51
53
104


82



102



68



287



26**





*As of March 17, 2025. Past years/events/cases, including their supporting evidences, remains difficult to scour/dig around. **As of March 17, 2025. We are still at the beginning phase of 2025 Severe Weather Season.

If you use this dataset/archive, kindly cite either of the following;

Capuli, G. H. (2024). Project Severe Weather Archive of the Philippines (SWAP). Part 1: Establishing a Baseline Climatology for Severe Weather across the Philippine Archipelago. Annals of Geophysics, 67, p. GC554. https://doi.org/10.4401/ag-9151

or

Capuli, G. H. (2024). Project Severe Weather Archive of the Philippines (SWAP). Zenodo. https://doi.org/10.5281/zenodo.11236890

You can contact me through this form: SWAP Contact Form or through the email.