Working Group on Tropical Meteorology Research (WG TMR) Workshop: Cyclone Types and Phase Transitions
Workshop:
Cyclone Types and Phase Transitions
11 - 13 November 2025
Online
Purpose:
The Working Group on Tropical Meteorology Research (WGTMR) of the WWRP of WMO is organizing a workshop, in response to Recommendation 14 from the 10th International Workshop on Tropical Cyclones (IWTC-10), which highlighted the need to develop basin-specific approaches to defining cyclone types (tropical, subtropical, extratropical cyclones, medicanes) and their transition pathways, as well as to further develop and share diagnostic techniques building on the cyclone phase space.
The programme included invited presentations and interactive breakout discussions covering:
- Session 1 (11 Nov): Tropical cyclones and the extratropical transition
- Session 2 (12 Nov): Medicanes, Subtropical cyclones and tropical transition
- Session 3 (13 Nov): Summary and next steps
Date | Time | Title and Speaker |
11 Nov | ||
00:00-00:05 UTC | Opening remarks Kunio YONEYAMA (WWRP SSC) | |
00:05-00:30 UTC | Phase transitions between tropical, subtropical, and extratropical cyclones: A review from IWTC-10, Kim Wood (UA) | |
00:30-00:55 UTC | Exploring Cyclone Transitions in AI/ML Weather Models: Preliminary Results from WP-MIP Ron McTaggart-Cowan (ECCC) | |
00:55-01:20 UTC | JMA Operational Analysis/Forecasting on Extratropical Transition of Tropical Cyclones. Nao Takamura (JMA) | |
01:20–01:55 UTC | Breakout Discussion Moderators: Organizing Committee, Ian Beckley (UWM), Joe Courtney (BOM), Chris Fogarty (ECCC), Cameron Wunderlin (UNL) | |
01:55-02:00 UTC | Wrap up | |
12 Nov | ||
00:00-00:25 UTC | ||
00:25-00:50 UTC | Cyclone Alfred: Subtropical-to-Tropical Transition and Forecasting Challenges Craig Earl-Spurr (BOM) | |
00:50-01:15 UTC | Physical and operational implications of medicanes' physical definition Emmanouil Flaounas (HCMR) | |
01:15–01:55 UTC | Breakout Discussion Moderators: Organizing Committee, Ian Beckley (UWM), Joe Courtney (BOM), Chris Fogarty (ECCC), Nurizana Amir Aziz (MMD), Philippe Papin (NOAA)
| |
01:55-02:00 UTC | Wrap up | |
13 Nov | Session 3 - Recording Lead: Parthasarathi MUKHOPADHYAY (IISER, Berhampur) | |
00:05-00:15 UTC | Session 1 Rapporteurs- Presentation Chris Fogarty (ECCC) | |
00:15-00:25 UTC | Session 2 Rapporteurs- Presentation Joe Courtney (BOM) | |
00:35-00:45 UTC | ||
00:45-00:55 UTC | Follow-up discussion from Session1&2 Ron McTaggart-Cowan (ECCC) John Beven (NOAA) | |
00:55-01:30 UTC | Discussion on Gaps and Priorities | |
Organizing Committee:
- Michelle Simões REBOITA, Universidade Federal de Itajubá, Brazil
- Wataru YANASE, Japan Meteorological Agency, Japan
- Zhuo WANG, University of Illinois, United States of America
- Parthasarathi MUKHOPADHYAY, Indian Institute of Science Education and Research (IISER, Berhampur), India
