Re: Marine weather forecast
as a teenager I took a 16' starcraft out in open water when I shouldn't have. 1-3' is not a good idea for family boating in that craft.
However it is important that you get experience in these things and see for yourself. Find some place where you can launch in protected water but go out to where it's rougher,(without complainers on board--leave the wife at home, bring the boys!) run around some, and come back. Look how different it is going into the wind and with the wind. learn how to trim your bow up, how to vary your speed, angles of approach, etc. Run the troughs. Practice on large wakes, too, whenever you can.
Someday you will go out when it's calm and have to come home in the slop. You have to know your boat. Almost any boat, with the right captain, can survive almost any condition. Not comfortably or dry, though.
Know what the reports mean for your waters. Wind direction can be more important than wind speed. here, tides running against the wind can almost double the wave height. WOuld be the same with large rivers I suppose. 3' swells are nothing for your boat but 3' chop would be a struggle.
On your boat be sure your bilge pump on the float switch is working. Our first starcraft you just pulled the plug!
I do a lot of open water boating now (in a little larger boat) so I have gone out in everything and now know when the WX says wind at A gusting to B from the CD direction, plus tides, exactly what I'm facing and decide from there how the conditions are for hearty fishermen, family fishing, family cruising, fair weather boating, etc.