The Country Fire Authority says it was "disappointed" by Wimmera residents who flouted total fire ban restrictions, with volunteer firefighters called out to "several" burn-offs and backyard bonfires during Saturday's total fire ban.
It comes as the CFA declared another total fire ban for the Wimmera and Mallee for Tuesday.
Strong northerly winds have been forecast, before a westerly wind change during the afternoon that is expected to bring damaging wind gusts.
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The combination of heat and strong winds will considerably increase the fire risk, resulting in a Fire Danger Rating of Severe for the Mallee and Wimmera regions.
CFA deputy chief officer Alen Slijepcevic urged Victorians to abide by the law, which says that during a total fire ban, no fire can be lit in the open air or allowed to remain alight from 12.01am to 11.59pm.
"It was disappointing to see a number of deliberately lit fires during Saturday's Total Fire Ban, and I really hope we don't see that again tomorrow," he said.
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CFA volunteer firefighters responded to several burn-off and recreational bonfires that were lit during the Total Fire Ban in Mallee, Wimmera and Northern Country on 28 November, including burn-offs and backyard bonfires.
"That's dozens of volunteer hours spent putting out unnecessary and dangerous fires, and we really urge people to stop being reckless with their own safety and that of others," DCO Slijepcevic said.
Several fires last week were also caught by farm machinery such as headers used during harvesting.
Strict rules also apply to the operation of farm machinery, chainsaws and lawn mowers, and residents in Mallee and Wimmera in particular are encouraged to take extreme care.
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