Houston Mature Queen Palms breaking in half

I have had 3 seemingly healthy mature queens just fall over in the last 2 months and have no idea why. I live in Houston and they have been through several hurricanes with no issues. I need to save the remaining 4 queens so I need help.

 

Welcome to the Forum!

Sorry about your trees.
Sure do hope that the ones still with you will stay healthy...
...and not succumb to this plague:

Palm Diseases
Lethal Bronzing: A Destructive New Palm Disease - UF/IFAS Extension Palm Beach County

You have come to the right place for diagnosis and advice.
A photo (or several) would be helpful!
Good luck to you and the trees.

 

Sorry for the bad quality of photo. I have no idea why they break in half.

 

A couple documents which may help you in diagnosing the problem:

• ENH-767/ST609: Syagrus romanzoffiana: Queen Palm
• Trunk Problems With Queen Palm Trees

 

Sudden Crown Drop-Is there anything I can do to stop this from happening?

 

It doesn't sound like there is, according to the referenced articles: