Grey Maine and nh Skywarn frequencies

[cboykonh]

I found the following frequencies on this site NWS Gray ME SKYWARN Amateur Radio Team Operations Manual | Concord Friends Meeting (Quakers) and am wondering if this is correct or if there are others to listen to for Skywarn. I am a Skywarn spotter not using ham radio, but wonder what I shoukd use to monitor radio Skywarn nets?