The public is being warned a contingency plan is in place to protect them as up to 900 firefighters go on strike.
The walkout in Essex is over proposed cuts, staffing levels and working conditions.
The county's fire and rescue service says more than one hundred firefighters are still working.
More top news
Simon's Blog - All Creatures Great And Small!
Tuesday night's weather with Simon Parkin
Tuesday afternoon's weather with Simon Parkin