Hywel Dda University Health Board says the number of people going to accident and emergency departments has increased at all of its hospitals this month, compared to last month.
It says some planned surgery has been postponed, so resources can be redeployed to A&E units, but it is working to ensure patients are not delayed in moving out of hospital and into more appropriate care.
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All primary and secondary schools in Wales have been categorised in a new colour-coded system. Is your school green or red?
A yellow warning for snow and ice on Thursday night and Friday has been issued.
Some wintry showers and staying windy with a significant wind chill and widespread frost developing