http://weather.gov (run by NOAA and the national weather service) is my go to weather site. No ads, no hyperbole. I found out about it when some senator wanted to stop them from posting weather online because it competed with "private sector" weather companies. A couple times I've seen that tv news weather leaves the site up on their monitors during newscasts.
Almost all of these companies simply regurgitate NWS information pretending it's their own anyway.
Forecasts are fuzzy enough that they may play in that area; but serious things like severe weather warnings only come from the NWS.