Just to clarify, the linked post above dealt with an issue where the user
noticed the wind chill value displayed on his Vantage2 console did not
match the wind chill value displayed by WeeWX. The reason was the console
displayed the value calculated by the console, but WeeWX displayed the wind
My apologies. I probably could have phrased that better. You are correct
that VP2s can generate windchill via hardware; however, an older unit like
mine with older firmware doesn't send the windchill value in the LOOP
packets.
On Tuesday, January 3, 2023 at 9:39:03 AM UTC-5
> Tom and Gary confirmed that the VP2 hardware generated values for windchill are only available in the LOOP2 packets.I’m not sure why you think that is relevant. The question is, whether software or hardware generated, do the loop packets have windchill. I confirmed they do contain windchill
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.
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 = TrueThis tells weewx (well, it tells it to do exactly
Thanks for the comments, time to go and learn about Met and Python :-)
Barry
On Monday, May 16, 2022 at 11:40:11 a.m. UTC-4 peterq...@gmail.com wrote:
> Calculations are here:
> https://github.com/weewx/weewx/blob/6c90a174f9cf81b1b93b83b70a426199a51b47ba/bin/weewx/wxformulas.py
>
> see the
Calculations are here:
https://github.com/weewx/weewx/blob/6c90a174f9cf81b1b93b83b70a426199a51b47ba/bin/weewx/wxformulas.py
see the comment:
The 'new' algorithm uses:
https://www.wpc.ncep.noaa.gov/html/heatindex_equation.shtml
On Mon, May 16, 2022 at 8:18 AM Greg Troxel wrote:
>
> Barry
Barry writes:
> Now that I have (with help from the group) Weefx and the tempest running
> well I would lie to throw out a Met.
>
> Current observation
>
> Wind 210/3knts
> Humidity75%
> Temp 20.1C
> Dewpoint15.5C
>
> Wind Chill 20.1C
> Heat Index20.1C
>
Now that I have (with help from the group) Weefx and the tempest running
well I would lie to throw out a Met.
Current observation
Wind 210/3knts
Humidity75%
Temp 20.1C
Dewpoint15.5C
Wind Chill 20.1C
Heat Index20.1C
Feels Like 21.5C
>From what I have
I have been reading about heat index and looking at the NOAA formula to
calculate the heatindex but it seems there is something wrong in the
archive table as it stores the heatindex as the windchill value. Is this a
bug ? I'm using a vantage pro 2 and MySQL to store data. Thanks.
--
You
In general, when emitting a value, WeeWX defers to the hardware. After all,
that's why you own it. Occasionally, the hardware is wrong, and that seems
to be the case for you.
One option is to set up [StdQC] to filter out the "bonker" values.
Or, let the software calculate the values.
Or,
Hi,
I've noticed a thing when setting up my WMR89. I've found the
"Windchill generated wrong." thread from december 2017 but I don't see
any conclusive solution there, just a suggestion to switch to software
windchill, and then a suggestion there might be a bug in the WMR200
driver.
On my WMR89,
Hallo
bei mir ist der Windchill gleich wie die Aussentemperatur.
normal muss der Windchill doch andere werte liefern.
mfg. Kalli
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Also, what type of station?
Gary
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Not doubting your transcription but would be good to see the actual LOOP packet
or REC record that gave the nonsense result.
Gary
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Yes, I live somewhere where the air hurts my face.. But that being said,
when windchill hits -25, it calculates it wrong.
Outside Temperature -9.4°F
Wind Chill -24.6°F
Heat Index -9.4°F
Dewpoint -34.2°F
Humidity 27%
Barometer 30.507 inHg
Barometer Trend (3 hours) 0.038 inHg
Wind 8 mph from 288°
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