Greg (2011)

A tropical wave that crossed Central America developed into Tropical Depression Seven about 150 nautical miles south-southeast of Acapulco, Mexico, at 1800 UTC on 16 August 2011. The system became Tropical Storm Greg at 0600 UTC 17 August and moved generally west-northwestward parallel to the southwestern coast of Mexico. Greg strengthened to a hurricane early on 18 August, reached peak intensity later that day, then turned more westward, moved over cooler waters, weakened to a tropical storm by 19–20 August, became a depression on 20 August, and degenerated into a remnant low by 1200 UTC 21 August; the remnant low dissipated by 23 August.

Greg did not make any landfalls along the Mexican coast. Its track remained offshore, moving roughly parallel to the coast of southwestern Mexico from mid‑August before veering west into open waters as it weakened.

The hurricane’s maximum sustained winds were estimated at 75 knots (about 86 mph) with a minimum central pressure of 979 mb, corresponding to a high-end Category 1 hurricane. Those peak values occurred near 1200 UTC on 18 August.

There were no reports of storm surge impacts tied to Greg, and no significant coastal surge measurements were recorded in the official observations. Rainfall and specific rainfall totals from Greg were not reported in the Tropical Cyclone Report; available records cited no notable rainfall totals at populated Mexican locations in association with this storm.

No damage or casualties were reported in connection with Greg. The storm remained offshore and caused little to no impact on land. Forecasts had some difficulty with the storm’s development: genesis was underforecast until shortly before formation, and intensity was somewhat harder to predict than average, though NHC track forecasts were better than their recent averages through 48 hours.