The explosion of the island of Krakatoa.
Shortly after I ate Taco Cabana Bean and Cheese tacos.
I believe the Saturn V moon rocket was the loudest man made sound.
Jodi Parks because the Guinness Book of World Records took her average burp and not her loudest burp, they recorded it as 104.75 decibels but her actual loudest burp was 107.7 decibels beating Paul Hunn.
The Saturn V Rocket averaged 180 decibels. It is the second loudest (recorded) man made machine. First is a Hydrogen bomb at 200 decibels.
The sound takes time to travel from up in the air down to the ground. So, if the plane is directly overhead, the sound takes a little time to reach you, so that by the time you hear it, the plane has moved a bit. The sound is loudest when the plane is directly overhead, which is how we tend to judge where the sound is "coming from," so it appears to be coming from behind the plane. This is called the Doppler Affect.
Loudest Whisper was created in 1970.
Loudest Love was created in 1990-10.
The Loudest Engine was created on 2011-09-09.
Loudest Common Denominator was created on 2009-03-03.
If by highest you mean loudest, it was Hitler that has the highest recorded voice in history.
Shortly after I ate Taco Cabana Bean and Cheese tacos.
The eruption of Krakatoa.
The loudest volcanic explosion in recorded history was one produced during the 1883 eruption of Krakatoa. This volcanic island, which collapsed into the sea after the eruption, was located between Java and Sumatra in Indonesia.
The loudest event was 9/11.
The loudest will be the Nokia 6233.
The siren blared at its loudest volume, echoing through the quiet night.
My best answer is that when Mount Krakatoa erupted in 1883, it produced the loudest sound in recorded history.