I understand there is a underwater volcano 30 miles from the VI Don't know much more. Any comments?

Other than the 'Kick em Jenny' active volcano I have not heard of others. Near Grenada.
This site may give you some better info if you inquire:
http://uwiseismic.com/Default.aspx

You may find this interesting too:

https://issuu.com/bvibeacon/docs/tortola_environmental_profile/203

Yes. It is the Noroit Seamount. About 25nm ESE of South Sound Villa. 18.183N 64.066W Appears recently dormant with some evidence of activity within the past 500 years or so.

I have fished that seamount, glad it has not been active of late, I did think the water temperature was warmer than surrounding though.

I think it is closer to the surface than Kickem' Jenny. It is aparently not a subduction formed volcano like the others further south but a spreading fault. That would imply more flowing lava than explosive.
The real threat from that direction is a major earthquake and tsunami. The PR/VI micro-plate is rotating counter clockwise relative to St. Martin/Anguilla/Saba and the bottom of the Anegada passage is stretching. The Anegada Trough is an extension of the Muertos Fault system (a branch of which is causing the Puerto Rico quakes) and It has been locked up since before 1867. The great quake and tsunami of 1867 occured at joining point of the two fault systems.

When that moves my pool which is 50 ft above sea level will be full of rubble.!