Study the diagram. An ocean with points labeled 1 through 6. Water level scale is on the left, from 0 kilometers to 15 kilometers. 1: Inset of Earth with arrow showing direction of rotation. 2: Unstable atmosphere with a line graph showing Air temperature change based on altitude. As the altitude decreases, the air temperature increases. 3: Seawater greater than or equal to 80 degrees down to 50 meters or more. 4: Convection occurs at the low pressure center. 5: A line graph showing Wind speed increasing as altitude increases. 6: A 3 kilometer tall band starting 3 kilometers above water level. What is forming in the diagram? a front a hurricane a thunderstorm a tornado