car droped puddle of coolant after parking 2012 challenger srt8

What is your question?

I live in az. I own a 2012 dodge challenger srt8 with 50K miles. this morning I drove 20 miles to work and temp was running normal when I parked I heard coolant boiling and then started gushing to the ground. did coolantt flush about 6 months ago. I turned on car and temp was a little over 215 . any suggestion ? what can be the problem

What makes this problem better or worse?

when i park and shut off engine

How long has your 2012 Dodge Challenger had this problem?

2 days