I haven't bothered to look when the threat is, and maybe it's already been mentioned, but something after this weekend made the Eps and Geps snowfall maps jump today.
Icon would have been further north this run if it extended beyond 120hrs. That Lakes vort showed up unlike 12z and 700mb RH was noticeably further north. Heights along the coast were higher too.
"Could be"....The typical way to make a forecast leaving yourself an out if it fails, which would never happen, of course, since MJO 20-30 day forecasts are always accurate.
I suspect you've got to pay those people if you want a real forecast.