Thanks for the suggestion but I don't think that's the issue with my setup. In a previous discussion (https://groups.google.com/g/weewx-user/c/roOG0u8YPX4/m/Tc4vWnznAgAJ), Tom and Gary confirmed that the VP2 hardware generated values for windchill are only available in the LOOP2 packets.
------- [email protected] Jul 24, 2020, 8:21:48 PM to weewx-user Geez, Gary, you're right! So, you would also have to specify LOOP2 packets. See the section [Vantage] <http://www.weewx.com/docs/usersguide.htm#[Vantage]> in the User's Guide. [Vantage] loop_request = 2 -tk On Fri, Jul 24, 2020 at 5:13 PM gjr80 <[email protected] <https://groups.google.com/>> wrote: Windchill is only in included in the Davis LOOP2 packet, it’s not in the LOOP packet or archive record (the defaults) from the console. So unless you have set WeeWX to use the LOOP2 packet WeeWX will never see windchill from the console, irrespective of StdWXCalculate settings. Gary ------- And the User's Guide states "Not all stations support LOOP2 data. You need firmware version 1.90 or later." So I don't think the loop_hilo parameter will affect the windchill value with my setup. On Saturday, December 31, 2022 at 1:07:01 PM UTC-5 [email protected] wrote: > Tom and friends will know for sure, but I believe the low you are seeing > (at 07:31) is from the archive_day_windchill table. > > You likely have the following in your weewx.conf > # Whether to include LOOP data in hi/low statistics > loop_hilo = True > > This tells weewx (well, it tells it to do exactly what the comment says). > Note: vantage loop packets do indeed include windchill. > > The archive table (produced from vantage archive records) does not include > this low and the graphs are produced from archive records. > > I don’t think you are seeing anything *wrong*. > > Note: these highs and lows in the daily stats get wiped out if you run > wee_database —rebuild-daily (which is unfortunate). > > On Dec 31, 2022, at 9:21 AM, Steve Schindler <[email protected]> wrote: > > During the recent cold weather, I noticed a discrepancy between the > windchill minimum value in the table and the value/time shown on the graph. > For 12-24-22, the Low Wind Chill in the Since Midnight table is 23.6F at > 07:31, but the graph doesn't reflect that value. It shows a low of about > 27F at about 8:00. For 12-25-22, the temperature discrepancy is about the > same but time difference is greater. See the screenshots below. All other > values (temp, humidity, wind) agree between the table and the graphs. > > > > I'm using a Davis VP2 with firmware version 1.82 so WeeWX is calculating > the windchill value. > > Any thoughts on what's happening and how it can be corrected? > > I'm in Florida so my troubleshooting/testing opportunities are limited to > when a cold front passes through. However, I suspect that heat index has > the same problem and, if so, I'll have plenty of time to work on that that > this summer. :-) > > 12-24 > > <wx 2022-12-24 20:42:02.png> > > > 12-25 > > <wx 2022-12-25 20:56:20.png> > > -- > 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 [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/weewx-user/183e065c-2fc6-4b2b-aaff-99ec35fa8ca1n%40googlegroups.com > > <https://groups.google.com/d/msgid/weewx-user/183e065c-2fc6-4b2b-aaff-99ec35fa8ca1n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > <wx 2022-12-25 20:56:20.png> > > <wx 2022-12-24 20:42:02.png> > > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/70448a2d-6bfb-4e85-9e56-97f489dbf515n%40googlegroups.com.
