Outflow continued to improve , and with warm sea surface temperatures PERSON@1 gradually intensified to attain peak winds of NUMBER@1 mph -LRB- NUMBER@2 km/h -RRB- early on July NUMBER@3 while located about NUMBER@4 miles -LRB- NUMBER@5 km -RRB- east of Nags Head , LOCATION@1 .

Outflow continued to improve , and with warm sea surface temperatures PERSON@1 slowly strengthened further to reach peak winds of NUMBER@1 mph -LRB- NUMBER@2 km/h -RRB- early on July NUMBER@3 while located about NUMBER@4 miles -LRB- NUMBER@5 km -RRB- east of Nags Head , LOCATION@1 .
