Central States News: Des Moines' Polk County Changes Criteria For Sounding Tornado Sirens

This is a good idea I think...

The DES MOINES REGISTER reports that now Polk county Iowa officials are sounding the civil defense/tornado-warning sirens if winds of 70 m.p.h. or greater are expected. 

The change was apparently unannounced- as the DMR story says the last time officials sounded the sirens using the new warning criteria- the public used 9-1-1 to find out WHY the sirens were sounding in lieu of a tornado warning issued.


I like it because a 70 m.p.h. can kill you as those winds are associated with EF-0 and/or EF-1 tornadoes.

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