"rain" is the amount of rain that fell in the archive interval. "rainRate" is a derived quantity, calculated by StdWXCalculate. It's the amount of rain in a fixed period, divided by the length of that period. The period is set by option rain_period, with a default of 900 seconds (15 minutes).
Posts to the WU use something completely different: the amount of rain that fell during the preceding 60 minutes. Presumably, the WU then takes deltas on this number to calculate whatever it is that they are showing. -tk On Wed, Sep 12, 2018 at 10:52 AM Pat <p...@obrienphoto.net> wrote: > Dave, > > The "Rainfall" in your graph is a really a bucket tip as I understand it. > So if it's only showing 0.01 or 0.02 then that's how many tips per archive > interval. The code that generates that graph is here > <https://github.com/poblabs/weewx-belchertown/blob/master/bin/user/belchertown_highchartsSearchX.py#L140> > . > > The wunderground page shows the precip rate. > > So I think you're looking for the weewx observation rainRate and not rain > (which > shows the 'bucket tips')...? > > For giggles, and since today is a rainy day for me it's easy to test this, > I changed the SQL to rainRate instead of rain and it gave me the graph > attached - which is slightly different than wunderground. Not sure why to > be honest... > > > > On Tuesday, September 11, 2018 at 11:00:54 AM UTC-4, David Hathaway wrote: >> >> Pat, >> >> How do I get a reasonable "Rainfall" value on the chart. The Rainfall >> Total graph looks fine, but the amount looks factored down. I have changed >> my interval to 5 minutes last week, so I am not sure that is the issue. >> Meanwhile, the text reports highest rainfall rate was 2.45 in/hr. Not sure >> what to tweak. >> >> See attached. You can also visit >> >> https://hathaway.house/weewx/belchertown/ >> >> and Wunderground to compare: >> >> >> https://www.wunderground.com/personal-weather-station/dashboard?ID=KTXSUGAR19 >> >> Dave >> >> >> -- > You received this message because you are subscribed to the Google Groups > "weewx-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to weewx-user+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
