Rain accum misses first count

[johnn]

I've often wondered if it was correct, and low rain event recently have shown clearly that my uploads to WU are wrong in the rain accumulation.

Basically the first count does not affect the Accum figure, but does show up in the Rate.

First rain after a long time

Rain Data.jpg (5.94 KiB) Viewed 10514 times

This seems to happen when it has been a long time since any rain (not clear if it is after a re-boot).
This time, in the next day, the data for another short burst of rain makes much more sense.

Rain burst next day

Rain Data2.jpg (4.3 KiB) Viewed 10514 times

Is this a recognised problem?? With MB or WU?

Thanks. We only get a little rain around here, and it is sad to see even less of it!

Meteobridge 2.7 (Feb 15 2016, build 9156), FW 1.4

[D2149]

I noticed something similar with PWS (weatherforYOU) and the UK Met Office WOW last night. Right after midnight, my MBP started reporting 0.01" of rain for 03/12/16 even though my VP2 console was showing 0.00 for today and continues to do so. What is odd, is that the MBP is sending the correct 0.00 to all the other Weather Nets it is sending to, and the LIVE DATA display is showing the correct 0.00 for the daily rain total.

No idea why only those two sites were sent that erroneous 0.01", but since I can't explain it, I turned those two off on the MBP and went back to having our dedicated weather computer send those site updates using an existing AppleScript.

So... while I am currently not using my MBP to upload data to our WU account, I can confirm that there is something strange going on with rain totals at midnight.

[admin]

@johnn: Which weather station are you using?

[johnn]

Hi.

The station is an Oregon Scientific: WMR-200.

[lorenz1982]

Hi.

The station is an Oregon Scientific: WMR-200.

This happens to me too, when the rain has been deleted from the my station WMR200.

[johnn]

That is curious. It has been quite a while since I deleted data.

Thanks

[lorenz1982]

That is curious. It has been quite a while since I deleted data.

Thanks

Look at this link viewtopic.php?f=56&t=9726
I have spoken about this again.

[johnn]

Look at this link viewtopic.php?f=56&t=9726
I have spoken about this again.

That certainly looks like the same problem. I had seen an earlier report of a similar problem here:

http://www.wxforum.net/index.php?topic=23588.0

...but fixed.

[johnn]

It happened again this morning...

IVICTORI832 18 Mar

IVICTORI832.jpg (2.19 KiB) Viewed 10384 times

The interesting thing is that it seems to happen when there is only one count in the first upload period (10min).

[lorenz1982]

It happened again this morning...

IVICTORI832.jpg

The interesting thing is that it seems to happen when there is only one count in the first upload period (10min).

Not delete the rain from the station. So it works.

[johnn]

Not delete the rain from the station. So it works.

After your earlier messages I cleared the stored data from the WMR200, but this morning I had the same trouble. Is that what you meant?

Thank you for your replies.

[lorenz1982]

Not delete the rain from the station. So it works.

After your earlier messages I cleared the stored data from the WMR200, but this morning I had the same trouble. Is that what you meant?

Thank you for your replies.

If the station already contain the rainfall data, the next rain will be counted right. (Sorry for my bad English, but I know Italian and German only).

[johnn]

I think I get it! Now I will have to wait until it rains again.

Thank you!

[johnn]

Well, it's been raining over the last week and the same problem occurs. If there is one count in a upload period the first one is counted for Rate purposes, but does not get counted in Accumulated.
Big rainfalls seem to work fine.
Today it was even worse, with slow rain showing a rainfall rate three times before there is any actual rain reported!

[wsnoordbergum]

Well sounds familiar.

My davis is reporting the rain total correct but my meteobridge misses the first raincount.
Rate is correct, strange...

I am now updating to the latest version of may 18, see how things go...

Gr. wsNoordbergum