Met Mailbag is your chance to have a Weather Plus Meteorologist answer your weather question. Each Thursday, our NBC Weather Pulse Blog will publish the answers to questions you send us. This week's question was answered by NBC Weather Plus Meteorologist Jackie Meretsky.

Question: What makes the thunder noise?
Submitted by Joann Schraut Rollin, Hatboro, Pennsylvania.

Answer: Well Joann lightning, which accompanies thunder, is very hot and it heats the air to more than 50,000 degrees Fahrenheit.

That's hotter than the surface of the sun!

This intense heating causes the air to rapidly expand.

This creates a shockwave moving in all directions.The shock wave then becomes a sound wave and that is the thunder we hear.

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