Tropical Storm Ian was a pesky, hard to forecast tropical cyclone that later became subtropical, before becoming tropical again before turning extratropical well out in the open Atlantic.
The origins of Ian can be traced back to a tropical wave that emerged into the Atlantic from the coast of Africa on September 6. Moving west until reaching a break in the subtropical ridge, the precursor to Ian was forced to move northwest, and became a tropical storm on September 12 well away from land. On September 14-15, Ian transitioned into a subtropical cyclone whilst interacting with a frontal zone, before becoming tropical again as it began an extratropical transition.
Ian reached its peak intensity of 60 mph on September 16, before turning extratropical soon after. The system had no known impacts on land during its existence.
|SSHWS category||1-min winds||Pressure||Location||Date and time||ACE generated|
|Tropical Storm||40 mph||1007 mbar||20.5N, 49.3W||12/09/2016 0600 UTC||0.1225|
|Tropical Storm||40 mph||1006 mbar||21.2N, 50.2W||12/09/2016 1200 UTC||0.1225|
|Tropical Storm||45 mph||1003 mbar||22.2N, 50.6W||12/09/2016 1800 UTC||0.1600|
|Tropical Storm||45 mph||1002 mbar||23.0N, 51.2W||13/09/2016 0000 UTC||0.1600|
|Tropical Storm||45 mph||1001 mbar||23.9N, 51.7W||13/09/2016 0600 UTC||0.1600|
|Tropical Storm||50 mph||999 mbar||24.8N, 52.8W||13/09/2016 1200 UTC||0.2025|
|Tropical Storm||50 mph||998 mbar||26.0N, 52.4W||13/09/2016 1800 UTC||0.2025|
|Tropical Storm||50 mph||998 mbar||27.3N, 52.6W||14/09/2016 0000 UTC||0.2025|
|Tropical Storm||50 mph||998 mbar||28.9N, 53.0W||14/09/2016 0600 UTC||0.2025|
|Tropical Storm||50 mph||998 mbar||30.5N, 53.5W||14/09/2016 1200 UTC||0.2025|
|Subtropical Storm||50 mph||998 mbar||32.1N, 53.8W||14/09/2016 1800 UTC||0.2025|
|Subtropical Storm||50 mph||997 mbar||33.5N, 53.5W||15/09/2016 0000 UTC||0.2025|
|Subtropical Storm||50 mph||997 mbar||34.9N, 53.0W||15/09/2016 0600 UTC||0.2025|
|Tropical Storm||50 mph||996 mbar||36.3N, 51.5W||15/09/2016 1200 UTC||0.2025|
|Tropical Storm||50 mph||996 mbar||38.3N, 49.2W||15/09/2016 1800 UTC||0.2025|
|Tropical Storm||60 mph||994 mbar||41.2N, 46.8W||16/09/2016 0000 UTC||0.2500|
|Tropical Storm||60 mph||994 mbar||43.2N, 42.9W||16/09/2016 0600 UTC||0.2500|