In the hours after becoming a tropical cyclone, the deep convection associated with the depression decreased, though it again increased later in the day. A ragged rainband developed in the southeastern quadrant of the circulation, and based on increased Dvorak numbers and improved presentation on satellite imagery, the National Hurricane Center upgraded the depression to Tropical Storm Barbara on May 30 while it was located about 115 miles (185 km) south of Puerto Escondido.
In the hours following its transformation into a tropical cyclone, the deep convection connected with the low-pressure system decreased initially but increased again later in the day. A fragmented rainband developed in the southeastern quadrant of the circulation, and based on elevated Dvorak numbers and enhanced visual presentation on satellite imagery, the National Hurricane Center upgraded the depression to Tropical Storm Barbara on May 30 while it was located approximately 115 miles (185 km) south of Puerto Escondido.