Because the model outputs were so wildly at variance with historical experience for that time of the year, as well as how rapidly the models were changing their results from inputs.
Computer models aren’t fool-proof. There’s LOTS of times when the meteorologists make their own judgements of what is valid. Matter of fact, most of your local WX prediction is an amalgamation of several computer model’s outputs, and sometimes the forecasters look at the models and say “OK, we have four models in agreement and one which is wildly at variance - toss the last one.” And that’s what they do. They just toss the results, because it is coming up with something so wildly out of the past experiences for that region.
Sometimes, that one wild model is the one with the predictive skill. Often, it isn’t.
Gotta go now. 'Night. Nice chatting with you!