On July 18, Rammasun entered another area of very warm sea-surface temperatures, and was upgraded to a Category 4 super typhoon by the JTWC, which was upgraded to Category 5 in post-season reanalysis.
Rammasun entered another area of very warm sea-surface temperatures. This was on July 18. Rammasun was upgraded to a Category 4 super typhoon by the JTWC. This was on July 18. The JTWC was upgraded to Category 5 in post-season reanalysis.