Council staff will run the trials to practice installing the city's demountable flood barriers and while it might seem it's a weather omen of ominous outcomes, it's a test that is purely coincidental for the current weather conditions.

The main river crossing between east and west Tamworth will be closed to cross city traffic from 7.30pm Tuesday until about 1am Wednesday as Tamworth Regional Council services crews put the big aluminium flood panels into place, and then pull them back down again.

The panels have been part of the annual test runs for the flood water proofing materials first introduced in September 2010 as a vital ingredient in the then-new Taminda and CBD levee project.

The road closure across the Peel will mean any night-time traffic will have to use the Ebsworth St route to link with Jewry St or the Scott Rd/highway crossing.

The second part of the annual trial is next weekend when the focus of the flood barrier installation practice run shifts to Barnes St in Taminda and when Barnes St between Crown and Ebsworth and between Denne and Crown streets on Ebsworth St is closed.

That road closure will be Sunday from 7am to 1pm. Detours will be signposted.

A spokesman for TRC said the exercises are a mandatory part of the TRC risk management and flood relief plans and keep operations staff up to date and skilled at the putting the barriers into place quickly and effectively