Severe Tropical Storm

Event Rules

This market resolves based on the maximum intensity that Tropical Storm Saudel (JMA designation T2618) reaches at any point on or before 11:59 PM ET on August 31, 2026, using the Japan Meteorological Agency's (JMA) advisories (https://www.jma.go.jp/bosai/map.html#contents=typhoon&lang=en). Resolution is by wind speed: take the highest 10-minute maximum sustained wind speed JMA reports for Saudel in any single advisory during its lifetime, and the market for the one category whose range contains that value resolves "Yes." The categories are defined solely by these inclusive knot ranges: Tropical Storm (34-47 kt), Severe Tropical Storm (48-63 kt), Typhoon (64-84 kt), Very Strong Typhoon (85-104 kt), and Violent Typhoon (105 kt or higher). These names label the wind-speed ranges; JMA's own strength wording need not appear in an advisory for a category to resolve. The peak must occur on or before the deadline, though the confirming JMA data may be published later. Saudel is already a tropical storm, so its peak is at least "Tropical Storm". The wind speed in JMA's issued advisories is final and is not changed by any later reclassification or post-season best-track reanalysis. Where JMA advisory data is disputed, the values recorded by the Digital Typhoon database (National Institute of Informatics, Japan) for Typhoon 202618 (SAUDEL) are treated as conclusive evidence of what JMA reported. JMA is the primary and default resolution source.