|Tropical storm (SSHWS/NWS)|
|Formed||June 5, 2016|
|Dissipated||June 14, 2016|
|(Extratropical after June 7)|
1-minute sustained: 50 mph (85 km/h) |
|Lowest pressure||1001 mbar (hPa); 29.56 inHg|
|Damage||$10,000 (2016 USD)|
|Areas affected||Yucatan Peninsula, Southeastern United States|
|Part of the 2016 Atlantic hurricane season|
Tropical Storm Colin was a very disorganized tropical storm that was the earliest third named storm in the Atlantic basin's history. The third named storm of the active 2016 Atlantic hurricane season, it peaked as a moderate tropical storm with maximum sustained winds of 50 mph, and made landfall in Northwestern Florida at this intensity. Colin was the first tropical cyclone to make landfall in Florida since Tropical Storm Andrea of the 2013 Atlantic hurricane season.
On June 1, the first day of Atlantic hurricane season, the National Hurricane Center (NHC) noted the possibility of tropical development in the eastern Gulf of Mexico over the next several days. A low pressure area developed on June 3 and began to produce isolated convection. By the morning of June 5, the low pressure system had become better organized, and with a sufficiently well defined circulation present, the NHC initiated advisories on Tropical Depression Three at 12:00 UTC that day. At 18:00 UTC, it strengthened into Tropical Storm Colin; operationally it was not named until 21:30 UTC that day after a reconnaissance aircraft identified winds of tropical storm force. After becoming a tropical storm, Colin remained very disorganized, with the low-level center hard to identify on satellite. Early on June 6, another reconnaissance aircraft investigated Colin, finding two small separate centers. SFMR winds were found to be as high as 61 kt (near hurricane force), but it is believed that these estimates were severely rain contaminated. Colin's peak intensity of 50 mph is disputed for this reason, and it is possible that Colin could have either been stronger or not even a tropical storm at all because of its unusually disorganized structure. However, the NHC chose to keep the intensity of Colin nearly the same in post analysis, and did not declassify it from tropical storm status. Colin then changed little in intensity before it made landfall in Northwestern Florida early on June 7. Colin then exited the coast of Florida, began to accelerate in speed, and lost its tropical characteristics by 12:00 UTC that morning. However, the post-tropical cyclone began to strengthen afterwards, peaking with maximum sustained winds of 60 mph.