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Computer failure the reason tornado sirens didn’t go off in Black Hawk County

BLACK HAWK COUNTY, Iowa (KWWL)-- According to Black Hawk County Sheriff Tony Thompson, a computer failure between the National Weather Service and the automated system that sounds the sirens is why the tornado sirens didn't go off.

That signal from the National Weather Service went out, but did not get received by the system in Black Hawk County.

An IT contractor is currently working to ensure the connection is correct and solve the problem.

Thompson said it is unknown why it did not get received by the system, but it appears to be IP routing failure.

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