[tbird]

In a warm weather environment, I would NEVER have thought this to happen. I paid attention up north, because the cold makes the glass more brittle.

But still, the wiper is rubber, and just the shock of rubber hitting the glass can make it spread, and then in warm weather it can spread that quick. That is crazy.

Call your insurance company. If the crack is less than 12", you can have it resin-filled for free, and your insurance company won't hit you for the claim. Once over that, you will easily go over the $1500 line for how insurance companies will raise your rates on a claim that much or higher. If you have USAA, they have a nice benefit of that you can replace once every two years with no rate hikes if it is damaged. I don't know about other companies.

Oh, and the resin is clear, the crack goes away. You can barely see it.