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Lightning

Discussion of the Cumulusutils tool and website generator.

Moderator: HansR

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HansR
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Re: Lightning

Post by HansR »

Nossie wrote: Mon 30 Jan 2023 11:36 am Everything else so far is perfect Hans =) thank you.

Yeah I found three references to miles in the manual and none of them point to where it can be changed to km Maybe it uses a previous setting from something else?
Good. And where the unit for the distance is changed remains a question atm. I assume it is somewhere hidden: you see miles, I see kilometers so it must be set somewhere. Uninteresting now, it will come to the surface sometime.
Nossie wrote: Mon 30 Jan 2023 11:36 am I did add the percentages to the language text yes.
Good.
Nossie wrote: Mon 30 Jan 2023 11:36 am Is there also a language section to add (miles) to distance to last strike?
There is no entry in the language file for this.

The unit for the distance of the last strike will be added automatically now that it is assumed that unit is always the unit chosen by the user (in the GW1100 app, assuming the speed unit is extended to the distance) and it is the same unit as in CMX.

If it proves wrong we'll have a bug and I'll restart the search but for now I am fed up with it.
Hans

https://meteo-wagenborgen.nl
CMX build 4070+ ● RPi 4B ● Linux 6.6.62+rpt-rpi-v8 aarch64 (bookworm) ● dotnet 8.0.1
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Nossie
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Re: Lightning

Post by Nossie »

Just confirmed

On the display - changing the wind units to kmh also changed the lightning units to km.
Ian.

http://www.StewartonWeather.com
Containerised Cumulus[MX] 4.2.1 (build: 4040) ● CumulusUtils Version 7.1.1● Ecowitt 2551/WH65/T&HP/WH57/WH45/3x WH51 ● Pi 5 8GB ● Debian Bookworm ● Ubuntu Server Host
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HansR
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Re: Lightning

Post by HansR »

Thnx
Hans

https://meteo-wagenborgen.nl
CMX build 4070+ ● RPi 4B ● Linux 6.6.62+rpt-rpi-v8 aarch64 (bookworm) ● dotnet 8.0.1
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mcrossley
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Re: Lightning

Post by mcrossley »

CMX uses the wind speed units to determine the strike distance units
davepaterson
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Re: Lightning

Post by davepaterson »

Having watched lightning strikes to the E,W,N and S I eventually got one last night. The back garden lit up followed quickly with a very big bang.CMX and Ecowitt both recorded the distance at 0.6 miles which I expected as there was not much time between the flash and bang. BUT looking at Blitzortung and Lightning maps they both showed strikes 11 and 14 miles away and none in my local area. From the 'Rule of Calculation' it takes 5sec. for the thunder noise to travel 1 mile as you count the secs. then div by 5. So the 11 miles would have given a count of 55 sec. as there was very little delay I can only assume neither Blitzortung and lightning maps have any input from my area. I am totally new to the WH57 data and both maps, am I right with my assumption? :?:
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HansR
Posts: 6926
Joined: Sat 20 Oct 2012 6:53 am
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Location: Wagenborgen (NL)
Contact:

Re: Lightning

Post by HansR »

davepaterson wrote: Wed 01 Feb 2023 12:42 pm Having watched lightning strikes to the E,W,N and S I eventually got one last night. The back garden lit up followed quickly with a very big bang.CMX and Ecowitt both recorded the distance at 0.6 miles which I expected as there was not much time between the flash and bang. BUT looking at Blitzortung and Lightning maps they both showed strikes 11 and 14 miles away and none in my local area. From the 'Rule of Calculation' it takes 5sec. for the thunder noise to travel 1 mile as you count the secs. then div by 5. So the 11 miles would have given a count of 55 sec. as there was very little delay I can only assume neither Blitzortung and lightning maps have any input from my area. I am totally new to the WH57 data and both maps, am I right with my assumption? :?:
I have no idea about the 'Lightning map' but Blitzortnung uses some other type of measurement based on triangulation or timing of their stations (I guess). So given what you calculate - appr correct - and where you are I would say those systems are less accurate for your position than your local sensor.But I don't know the details.

This thread is about the implementation of the WH57 in CUtils. Maybe ask again in the Ecowitt thread or some other specialist thread here.
Hans

https://meteo-wagenborgen.nl
CMX build 4070+ ● RPi 4B ● Linux 6.6.62+rpt-rpi-v8 aarch64 (bookworm) ● dotnet 8.0.1
BlueSky: https://bsky.app/profile/wagenborgenwx.bsky.social
davepaterson
Posts: 176
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Re: Lightning

Post by davepaterson »

Will do thanks
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