I agree, it sucks. This format is much better for actual content sharing but that isn't the way everybody is moving. This is actually the last of about a dozen boards I'm a member of including motorcycling, bodybuilding, financial, energy, etc that hasnt died yet. Once it drops below a critical mass threshold and there aren't enough people to sustain worthwhile posting then it'll wipe out too.
This is why it is particularly important to welcome new people to post even if they aren't weather experts. Otherwise it just ends up as an echo chamber for a few posters for a little while before collapsing. You can at least put it off by getting a lot of newbs onsite wanting to learn.