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Tropical Storm Fiona was a long lived, poorly organised tropical cyclone that existed well out into the Atlantic during mid to late August.

The origins of Fiona can be traced to a tropical wave accompanied by a low pressure area that emerged from the coast of Africa on August 13. Moving to the west, the wave was able to organise into a tropical depression whilst moving towards the northwest, a motion the system would retain for the entirety of its lifecycle. The following day, the depression was upgraded into a tropical storm after banding features were noted on both infrared and visible satellite images, peaking briefly with 50 mph winds on August 19 before shear increased over the system and exposed the center of circulation.

For the next several days, Fiona sporadically produced moderate to strong convection over the center, with the system almost dissipating onAugust 21-22 as high shear prevented the system from forming any organised convection over the exposed center. On August 22, Fiona began to lose the battle against increasingly hostile conditions, and weakened to a tropical depression, producing periodic, and weaker, bursts of deep convection, until the system was declared an open low early on August 23. As a tropical cyclone, Fiona had minimal impacts on land, so any impacts are unknown.

SSHWS category 1-min winds Pressure Location Date and time ACE generated
Tropical Depression 30 mph 1009 mbar 12.0N, 32.2W 16/08/2016 1800 UTC N/A
Tropical Depression 35 mph 1008 mbar 12.4N, 33.3W 17/08/2016 0000 UTC N/A
Tropical Depression 35 mph 1008 mbar 12.9N, 34.8W 17/08/2016 0600 UTC N/A
Tropical Depression 35 mph 1007 mbar 13.7N, 36.0W 17/08/2016 1200 UTC N/A
Tropical Storm 40 mph 1006 mbar 14.5N, 37.3W 17/08/2016 1800 UTC 0.1225
Tropical Storm 45 mph 1005 mbar 15.2N, 38.5W 18/08/2016 0000 UTC 0.1600
Tropical Storm 45 mph 1005 mbar 15.7N, 39.4W 18/08/2016 0600 UTC 0.1600
Tropical Storm 45 mph 1004 mbar 16.1N, 40.1W 18/08/2016 1200 UTC 0.1600
Tropical Storm 50 mph 1002 mbar 16.9N, 41.5W 19/08/2016 0000 UTC 0.2025
Tropical Storm 45 mph 1003 mbar 17.3N, 42.3W 19/08/2016 0600 UTC 0.1600
Tropical Storm 45 mph 1003 mbar 18.0N, 43.9W 19/08/2016 1800 UTC 0.1600
Tropical Storm 45 mph 1003 mbar 18.5N, 44.9W 20/08/2016 0000 UTC 0.1600
Tropical Storm 40 mph 1005 mbar 19.2N, 46.1W 20/08/2016 0600 UTC 0.1225
Tropical Storm 40 mph 1005 mbar 20.0N, 47.2W 20/08/2016 1200 UTC 0.1225
Tropical Storm 40 mph 1004 mbar 20.8N, 48.4W 20/08/2016 1800 UTC 0.1225
Tropical Storm 50 mph 1003 mbar 21.5N, 49.6W 21/08/2016 0000 UTC 0.2025
Tropical Storm 40 mph 1006 mbar 22.1N, 51.1W 21/08/2016 0600 UTC 0.1225
Tropical Storm 40 mph 1006 mbar 22.6N, 52.6W 21/08/2016 1200 UTC 0.1225
Tropical Storm 40 mph 1007 mbar 23.1N, 54.2W 21/08/2016 1800 UTC 0.1225
Tropical Storm 40 mph 1007 mbar 23.7N, 55.9W 22/08/2016 0000 UTC 0.1225
Tropical Depression 35 mph 1008 mbar 24.2N, 57.6W 22/08/2016 0600 UTC N/A
Tropical Depression 35 mph 1008 mbar 24.5N, 59.1W 22/08/2016 1200 UTC N/A
Tropical Depression 35 mph 1007 mbar 25.0N, 60.5W 22/08/2016 1800 UTC N/A
Tropical Depression 35 mph 1007 mbar 25.3N, 61.7W 23/08/2016 0000 UTC N/A
Total ACE 2.345

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