Every prediction model is (or at least should be) always a probabilistic model with a range of results.
There are some forecasters that report on a harsh side of the model range, and they are sometimes right, but most of the time the actual weather is on a milder side of the forecast range, that is why "main-stream" prediction tend to stay in a less alarmistic fashion, and, of course, sometimes are wrong and subsequently blamed for not being right with the forecast.
It is much easier to be sometimes right than sometimes wrong.