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Atlantic tropical storm season usually runs from June to November. The degree of activity over the whole season varies from year to year and is measured in several ways. Total number of tropical storms. The number of tropical storms observed over the season is the best known measure of the level

This forecast was issued on 21 May 2025. An updated seasonal forecast has since been issued in early August. Please see the link below for details. Early August updated seasonal forecast for the whole North Atlantic tropical storm season 2025 Forecast for June to November 2025 Issued 21 May 2025

This forecast was issued on 01 August 2025 and supersedes the pre-season forecast issued in May 2025. Please see the link below for the pre-season forecast. Seasonal North Atlantic tropical storm forecast issued in May 2025 Forecast for the whole 2025 season Issued 01 August 2025  All values given

of at least 39 mph. The terms hurricane and typhoon are region-specific names for strong tropical cyclones with wind speeds of more than 73 mph. The North Atlantic tropical storm season usually runs from June to November. The degree of activity over the whole season varies from year to year

to the 1990-2005 long-term average of 12.4. Note: The forecast is for the five full months remaining in the June-November Atlantic tropical storm season. There have already been two named storms - Andrea and Barry. More information? A detailed report with information on probabilities and the strength

hemisphere (clockwise in the southern hemisphere). A tropical storm is a tropical cyclone with mean wind speeds of at least 39 mph. The terms hurricane and typhoon are region-specific names for strong tropical cyclones with wind speeds of at least 74 mph. The North Atlantic tropical storm season usually

-November Atlantic tropical storm season. Our Risk modelling collaborations provide expert advice on tropical storms. A detailed report with information on probabilities and the strength and credibility of signals within the forecast for the next six months is produced each month from March to September

-November Atlantic tropical storm season. More information? A detailed report with information on probabilities and the strength and credibility of signals within the forecast is produced alongside the headline storm number prediction each season. Download previous reports issued in June from

This forecast was issued on 20 May 2021. An updated seasonal forecast has since been issued in early August. Please see the link below for details. Early August updated seasonal forecast for the whole North Atlantic tropical storm season 2021 Forecast for June to November 2021 Issued 20 May 2021

with mean wind speeds of at least 39 mph. The terms hurricane and typhoon are region-specific names for strong tropical cyclones with wind speeds of at least 74 mph. The North Atlantic tropical storm season usually runs from June to November. The degree of activity over the whole season varies from