Abertawe Bro Morgannwg University Health Board says many of the people it has been treating have cardiac problems or have suffered a stroke. Many are over the age of 85.
The health board says it has brought in extra staff, and put on extra beds, to deal to with its A&E departments being exceptionally busy.
It says most routine operations have been postponed.
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Well what a difference a day makes! It's the calm after the storm today!
A fraudster who pretended to be in a coma for two years was caught by police going on shopping trips and holidays with his family.
After yesterday's fun and games today will feel much calmer altogether!