Colin (2010)

A small tropical cyclone formed from a trough and tropical waves in the eastern Atlantic and became a tropical depression on 2 August 2010 about 750 nautical miles west‑southwest of the Cape Verde Islands. It strengthened to Tropical Storm Colin on 3 August while well east of the Lesser Antilles, briefly lost its closed circulation later that day, then regenerated into a tropical storm on 5 August about 280 n mi north‑northeast of San Juan, Puerto Rico. Colin tracked west‑northwestward then turned northward and northeastward, weakening to a depression by 8 August southwest of Bermuda and degenerating to a trough later the same day; the remnants dissipated on 9 August northwest of Bermuda.

Colin did not make any direct landfalls as a tropical cyclone. Its remnants passed west of Bermuda on 8 August and produced showers and gusty winds there, but no tropical‑cyclone landfall was recorded.

The storm’s peak intensity was 50 knots (about 58 mph) with a minimum central pressure of 1005 mb, reached at 2100 UTC on 5 August. That intensity corresponds to a moderate tropical storm (below hurricane strength).

Storm surge and rainfall reports associated with Colin were minimal. There were no ship reports of tropical‑storm‑force winds, and the report did not list specific storm surge heights or large rainfall totals at named cities or counties. The remnant trough did produce wind gusts near tropical‑storm force and showers over Bermuda as it passed west of the island.

No damage or casualties were reported in association with Colin. The system was notable for degenerating to a trough twice (once on 3 August and again after 8 August) while still producing strong winds, and for regenerating into a tropical storm faster than some forecasts anticipated. Forecast track errors at short ranges were larger than the recent five‑year average, while intensity forecasts tended to show a high bias when shear prevented the anticipated strengthening.