Simplify the following text for a Grade 7 native English-speaking person.
Original: A second Air Force plane on October 2 found 70 mph winds with a pressure of 997 mbar . By October 3 , Ernesto was no longer recognized after combining itself with an extratropical low .
Simplified: A second Air Force plane on October 2 found 71 m winds with a pressure of 997 h. By October 3 , Ernesto was not identifiable after merging with an extratropical low .