Many moons ago there was a weather website (I think it was called weather radar HD) that would give very detailed information about individual convecive storm cells to include tops, speed, direction and strength... it would also predict hail.  

I know that it was a subscription website,  I just can't find it anymore.  

any help would be appreciated, please post links if you feel up to it. 

Why not learn to read all that stuff yourself? With today's access to information it's all right there under your nose, if you know how to read a radar. It is really not overly complex to look at a Radar Reflectivity, Radar VIL, and IR Satellite to get all the information you just asked in your original question.

Okay, okay, I get it. It's much easier to just have a one stop shop you can glance at and get everything you want right then and there. There are plenty of paid services out there that will do just that, Schneider Electric Weather Sentry seems to be what most OCC/Comm centers that I've ever worked for use. But there are others.

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WeatherTAP

This is a good one.  Aviation Sentry - Helicopter version

https://www.dtn.com/weather/aviation/helicopters/aviationsentry-helicopter-edition/