Portsmouth Naval Base to test its nuclear emergency siren

Senior conservator Diana McCormack with the unfurled Trafalgar Sail Picture: Habibur Rahman

Iconic Trafalgar Sail is unfurled at Portsmouth Historic Dockyard for rare public display

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A TEST of the naval base’s nuclear emergency siren will take place tomorrow morning.

Portsmouth Naval Base is conducting the routine test at 9.30am.

The sound, a wavering tone, will last for one minute.

It is tested three times a year – on the last working days in February, June and October – as part of the nuclear emergency response plan for the navy base, in accordance with the city council’s nuclear safety plan.