First Layer Warping on Heated Bed--What Should I do?

I have a Tevo Tornado and have been experiencing warping on the first layer of my prints. I use a glass bed (no masking tape or glue) and PLA. I also use a bed temperature of 60 degrees and a nozzle temperature of 200 degrees. I have attached a picture of the problem. Does anyone know of anything I can use to fix this?Attachment 14670Thank you.

That is not warping, your starting height, also known as Z offset (the distance the nozzle is from the bed during the first layer of the print), is Too Close to the bed.