San Rafael is a small city in the state of California.
Investigation of the Mandarin Attacks
San Rafael was the location of an unusual thermogenic occurance during 2012, in which the thermogenic signature rose to 1310 degrees Celsius.
Tony Stark started investigating the Mandarin, in order to enact revenge for the explosion that almost killed Happy Hogan. As usual, no trace of the explosive device was found, but the heat from the blast was particularly high, more than 3000 degrees Celsius.
Stark studied the different thermogenic occurances with other cases based on the particular temperature of the explosion, discarding the thermogenic signature at San Rafael for not being as high as that of the explosion.