For Katrina, 2005, there are two identical discussions; one of which has 'orig' in the URL. Because this link is not captured above it will throw an error. This function is an effort to capture it and pass it through the validation but, at least for this Katrina it is not necessary. That being said, if there is output for any other storms it should be reviewed as it is common for the NHC to issue UPDATED statements.
Vector of URLs retrieved from storm's archive page.
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