Going to chime in with a bit of a disagreement. If a seperate thread is created for the mets then it should be for substantive updates only. Andy, Fred et al. have engaged in plenty of interesting discussion that possibly mightn't have happened if such a decision had been made earlier, unless they pasted the same posts into here to discuss them. This is after all a place to discuss the weather.
Repetition and multiple posts on the same thing is an unfortunate fact of internet forums - as anyone who's followed the Significant Tornado Events thread, and its predecessor on the old Talkweather site, for well over a decade can attest. Obviously this is an unusual and potentially historic event. and traffic has been unusual with a lot of new posters. Previous big events have tended to generate under 25 pages before the day-of. I think if anything's done it should be a (probable) one off, and should try split the conversation as little a possible.