Barbara continued westward under the influence of a subtropical ridge to its north, and began to steadily weaken on July 14 as it moved into an area of cooler water temperatures. The hurricane degraded to a tropical storm on July 16, and a day later it deteriorated to a tropical depression. As a depression with little to no convection near its center, Barbara continued west-northwestward until dissipating on July 18 while located 720 mi (1160 km) east-southeast of Hilo, Hawaii. Barbara remained away from land for its entire lifetime, and it did not cause any damage or deaths. As Barbara moved away from land, another area of disturbed weather moved off the coast of Central America on July 11. Moving westward, this area slowly organized, and developed a low-level circulation on July 22. The convection developed into curved rainbands, and based on Dvorak classifications of 35 mph (55 km/h), the National Hurricane Center estimated that the system developed into Tropical Depression Four-E on July 17, while located about 400 mi (645 km) south-southeast of the southern tip of Baja California Peninsula. As the depression was situated in an area with warm waters and moderate upper-level outflow, the system was forecast to slowly intensify to a 50 mph (80 km/h) tropical storm. Initially, the depression followed the forecasts, and it intensified into a tropical storm about 30 hours after developing, receiving the name ""Cosme"". Cosme was expected to strengthen only slightly due to predicted cooler waters and increased shear. On July 18, contrary to the predictions, Cosme became much better organized, and well-defined banding features were visible on satellite imagery. The storm continued to steadily intensify, and subsequent to the development of an eye, Cosme strengthened into a hurricane late on July 19, while located 380 miles (615 km) west-southwest of the southern tip of Baja California Peninsula. After maintaining hurricane status for 18 hours, Cosme weakened back to a tropical storm on July 20. Cooler water temperatures deteriorated the convection near the center, resulting in Cosme quickly weakening to a tropical depression on July 21. After turning to the west-southwest, Cosme dissipated on July 22. Cosme never affected land, and as a result caused no damage or fatalities. However, the intensity of the storm is still uncertain; late on July 18, a ship to the east of Cosme reported winds of 17 mph (27 km/h), despite that a normal 50 mph (80 km/h) tropical storm would produce tropical storm force winds for locations within at least 70 mi (110 km) of the center.