- Le premier ouragan de l'Atlantique se formera-t-il entre le 11 et le 15 septembre 2026 ?2¢
- Le premier ouragan de l’Atlantique se formera-t-il entre le 16 et le 20 septembre 2026 ?26¢
- Le premier ouragan de l'Atlantique se formera-t-il entre le 21 septembre et le 25 septembre 2026 ?17¢
- Le premier ouragan de l'Atlantique se formera-t-il entre le 26 septembre et le 30 septembre 2026 ?14¢
- Aucun ouragan atlantique ne se formera-t-il en septembre 2026 ?40¢
This market resolves based on when the first Atlantic hurricane forms in 2026, as classified by the U.S. National Hurricane Center (NHC). Each bracket is inclusive of both its start and end dates, evaluated in U.S. Eastern Time (ET). The bracket containing the date of the first qualifying NHC advisory will resolve "Yes", and all other brackets will resolve "No". A tropical cyclone is considered a hurricane when it has maximum sustained winds of 74 mph or greater (Category 1 or higher on the Saffir-Simpson Hurricane Wind Scale). A system is considered to have "formed" as a hurricane at the date and time of the first NHC public advisory that classifies a system in the Atlantic basin as a hurricane. Resolution is based on that first advisory, regardless of any later downward revision or reclassification. The sole determinant of when the hurricane formed is the issuance timestamp of that first classifying NHC advisory (evaluated in U.S. Eastern Time), not the estimated time at which the system's winds first reached 74 mph; for a system that straddles midnight between September 30 and October 1, 2026, the applicable bracket is determined solely by whether that advisory's issuance timestamp falls before or after 12:00 AM ET on October 1, 2026. The bracket "No Atlantic hurricane will form in September 2026" will resolve "Yes" if no NHC advisory classifies any Atlantic-basin system as a hurricane at any time from 12:00 AM ET on September 1, 2026 through 11:59 PM ET on September 30, 2026. In the event that the NHC has not published any data by September 30, 2026 11:59 PM ET, or if the NHC becomes unavailable, this market will resolve to "No Atlantic hurricane will form in September 2026". The resolution source for this market is the U.S. National Hurricane Center (NHC), available here: https://www.nhc.noaa.gov/