1985 Polar Bear

In a typical Tropical Tidbits GFS map showing 6-hour precipitation rate, is the rate for the six hours AHEAD of the valid time, or for the 6 hours BEFORE the valid time?
E.g., if the map is valid at 12z, is the forecast for 12z-18z, or 6z-12z? (I help to advise on indoor vs. outdoor graduation ceremonies at the college I work at, Bates, and our graduation is Sunday 10am. Looks like showers exiting by 8am or so.) Thanks.

21 minutes ago, MaineJayhawk said:

5" of snow with 1" (and counting) of sleet on top.  North Waterboro ME

10F

Just about the same totals here in Topsham. Back edge coming soon; hoping to snowblow (takes 90 minutes) in time before Pats game

1 minute ago, moneypitmike said:

No--it's 7*.  The wunderground banners don't update.  If you click on it, it brings you to the 'live' temp.

Right...was confused when you posted that it was 20 degrees. I guess you're not in Bath now?

14 minutes ago, moneypitmike said:

1% of CT is out, 1.5% of Tolland.  Temp really climbing here--up to 20*.  I didn't think we'd reach the forecast high.  We just exceeded it.

It's 20 degrees in Bath?

Just west of I295, we flipped to sleet 8:15. About 5.25 inches snow before that.
3F