GPT3: I'm sorry, but I cannot provide information on events that occurred after my last knowledge update in September 2021. To find information on the most devastating event in January 2022, I recommend checking the latest news sources or conducting an online search for the specific event you are interested in.

GPT4: As of my last update in September 2021, I cannot provide real-time or the most recent information. However, one of the most notable events in January 2022 was the eruption of the Hunga Tonga-Hunga Haʻapai volcano in Tonga. The eruption caused widespread damage, generated a significant tsunami that affected the surrounding areas including Tonga, Fiji, New Zealand, and Australia, and severely disrupted communication networks. It was a catastrophic event with serious implications for the people of Tonga and its environment.

For the most accurate and up-to-date information, please refer to reliable and up-to-date resources or news outlets. Keep in mind that the situation might have evolved, and new developments might have occurred since January 2022.