27;72.82860931324616', 'barometer':
>> '29.98054422916703', 'cloudbase': '2930.511265697056', 'dateTime':
>> '1756039901', 'dewpoint': '63.49175043093296', 'ET': 'None', 'heatindex&#
[StdCalibrate]
[[Corrections]]
pressure = pressure - 1.79
On Friday, August 22, 2025 at 9:18:07 AM UTC-4 kufuu wrote:
> Thanks
>
> On Friday, August 22, 2025 at 8:22:25 AM UTC-4 gszla...@gmail.com wrote:
>
>> EDIT: Sorry. I meant to say station pressure calculato
gust 21, 2025 at 2:49:01 PM UTC-4 gszla...@gmail.com wrote:
> Given:
>
> Aug 20 6:35 pm
>
> Altitude (true) = 1865 ft
> WeeWX altitude = 70 ft
> WeeWX altimeter= 29.86 inHg (rounded))
> WeeWX barometer = 29.85 inHg (rounded)
> WeeWX pressure = 29.78 inHg (rounded)
>
&
x27;,
>>> 'rainBatteryStatus': '0', 'rainRate': '0.0', 'rxCheckPercent': '100',
>>> 'usUnits': '1', 'windBatteryStatus': '0', 'windchill': '76.820002',
The three pressures on your LOOP was "altimeter", "barometer" and
"pressure".
If you set station altitude = 0 then you are telling your weather station's
barometer that it is located at sea level.
Therefore all three pressures shouldl read the same.
"pressure" is just your local atmospheric pres
There are two sea level pressures. One is QNH (Altimeter setting) and the
other is MSLP.
Although WeeWX calculates both sea level pressures, the one that is
displayed on the default Seasons skin is MSLP.(Mean Sea Level Pressure).
WeeWX displays MSLP as "Barometer".
MSLP is indeed, calculated
The best way to calibrate is to compare your station pressures with a
calibrated barometer of known accuracy. This will tell us if all barometers
are reporting true pressure. A good low cost, accurate barometer like the
Starpath USB baro would be suitable for this purpose. There's a review on
w
ure (barometer) and
> since its not sending absolute pressure anyway I need not worry about a
> conflict between the station and what the Arduino would be sending.
>
> Also apologies again, I should have mentioned in my original post:
>
> Weewx v5.1.0 (installed via pip/venv)
> Ra
>
> .. and under
>
> [[Calculations]]
>
>
> Change *prefer_hardware* in the following entries to:
>
> pressure = hardware
>
> altimeter = software
>
> barometer = software
>
> Which I think would ignore the station relative pressure (barometer) and
>
--Hmm..if Absolute pressure and relative pressure = 0 (zero) your barometer
was not set up correctly and not calibrated correctly. II absolute pressure
= 0, you would be living in a vacuum! Or are you referring to both offsets
= 0?
Your station is the weathersleuth IP? If so, you have an outsid
Everybody's experience is a bit different. I guess one of the things to
consider is reliability. Which of the two options in your particular
situation is more reliable. For instance, if you have to reboot the gateway
every two weeks because it just stops..then that's a factor to think about.
E
I'll take a wild guess..maybe it's a unit mismatch of some sort. Try
switching your console to inHg instead of hPa (temporarily) and see if that
works.
On Tuesday, February 6, 2024 at 7:05:58 AM UTC-5 michael.k...@gmx.at wrote:
> The warning tells you: WeeWX is receiving 0.0 for "pressure". You
No wonder the OP is confused.
In Europe, METARs generally don’t have SLP, they have QNH stated as a “Q
code” in the actual METAR report. An Altimeter /QNH reading of 1022 would
be Q1022 in the METAR report.
So typically, QNH > QFF when current or average outside temps are greater
than the ISA
Perhaps I can help as I own both an Ambient and Ecowitt weather station.
I recently did a major rewrite of an older Ecowitt barometer calibration
procedure and the new procedure should work with any Fine Offset
manufactured device with a barometric sensor.
Some basics regarding this equip
Did I get that right?
On Wednesday, July 5, 2023 at 10:03:33 AM UTC-4 Karen K wrote:
> gszla...@gmail.com schrieb am Mittwoch, 5. Juli 2023 um 15:37:16 UTC+2:
>
> Interesting comment that WeeWX uses current temperature only. Perhaps Tom
> can confirm. Does WeeWX use current temp or th
Interesting comment that WeeWX uses current temperature only. Perhaps Tom
can confirm. Does WeeWX use current temp or the 12 hour average?
MSLP calculations are country specific. In North America 12 hr temperature
averages are used.
Why? Dr. David Burch author of "The Barometer Handbook" has th
Getting a bit confused by all the terms
For personal weather statons station (non-airports) station elevation is
the ASL height of the barometric sensor and sea level pressure (Altimeter
and MSLP) is calculated from that elevation.
For airports, station elevation and pressure are calculate
Technical support at the web host was required to set things up.
1. Vince is correct. WeeWX runs as root and RSA generation must be done as
root.
2. slahes matter. If you are missing a slash, rsync will not work. Note the
preceding and trailing slash in HTML_ROOT
3 Port numbers are important. So
M)SLP using the proper algorithms.
Need to adjust the current algorithm for your region? You can modify it.
On Thursday, June 2, 2022 at 1:52:52 PM UTC-4 Greg Troxel wrote:
>
> thanks for the comments. I will be digesting all of the replies and
> CWOP data and coming up with a cal plan.
Looks like you've got the elevation for your location nailed down if you've
gotten it down to 10cm. For us ordinary folks we have to rely on topo maps
or google earth ( or similar map reference tools) to get down to 1 meter
accuacy. Not all countries have gone digital for surveys quite yet.
Her
Thanks vince. You are right - all my sensors update every 60 seconds except
the anemometer which is every 16.5 secs so for "realtime", I chose 20
secs. However I expected rsync to upload only the file differences rather
than re-copying the entire local skin. I think the whole template as-is
wi
Now that I got Belchertown running on my test bed machine it was now time
to install on the "big iron". I did a fresh Belchertown skin install with
MH's mqtt weewx extension and a local MQTT broker on my rpi zero 2W and am
"mirroring" the local LAN Belchertown skin to my web host using rsync wit
me like the
> weewx user hasn't done the key sharing to allow password-less rsync over
> ssh.
>
> On Thursday, January 13, 2022 at 10:58:19 AM UTC-5 gszla...@gmail.com
> wrote:
>
>> WeeWX version 4.5.1 - debian install
>> MQTT
>> GW1000 API
>> als
Thanks vince!
I assume that weewx is running as root for a normal apt-get debian type of
install.
It looks like when I ssh as root it asks for a password each time. So if
weewx-rsync fails each time as root, then would you not have to generate
keys as root instead of a non-root user?
On Thur
WeeWX version 4.5.1 - debian install
MQTT
GW1000 API
also running neowx-material skin
--
rsync works perfectly on the command line but it does not work in weewx.
The web host uses port for SSH.
I've tried all types of things with ~.ssh/config but whether or not I even
use the config file or n
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