Fire and rescue services around the region say plans are in place to deal with a planned strike this evening by members of the Fire Brigades' Union.
Senior officers say major incidents will be dealt with but they're warning that they will not be able to provide normal levels of cover.
The strike is due to start at 6.30 and last until 11.
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It will be a dry day and very warm with bright and sunny spells.
Armed officers will be on patrol at major infrastructure sites across Essex and the county will see more police patrols.