Parts of Victoria should be prepared after a warning for thunderstorm asthma was raised to moderate by authorities at the weekend.

Vic Emergency warned of “a moderate risk for epidemic thunderstorm asthma” in the North Central, Northern Country and Central forecast districts, which includes Melbourne.

A thunderstorm asthma warning system was introduced in the state last Monday after nine people died during an outbreak in November 2016.

Learn more about thunderstorm asthma and monitor the latest from Vic Emergency: http://bit.ly/2y8eiat