Now my weather data is completely screwed

(9 posts)

Started 1 year ago by ATJ777
Latest reply from ATJ777

ATJ777

senior member
Joined: Sep '09
Posts: 95

What's going on? The weather data for my runs doesn't even nearly match the weather station data.

For example, I ran today at 12:27pm for just under 21 minutes. My weather station was INSWWEST4
CSV data for the time:
2010-04-21 12:25:00,24.2,16.2,1020.9,SW,221,0.0,4.8,61,0.0,,SKC,0.0,846.00,VWS V14.01,
2010-04-21 12:30:00,24.4,16.4,1020.5,West,270,1.6,9.7,61,0.0,,SKC,0.0,788.00,VWS V14.01,
2010-04-21 12:40:00,24.9,16.7,1020.5,WNW,284,0.0,4.8,60,0.0,,SKC,0.0,742.00,VWS V14.01,
2010-04-21 12:45:00,25.4,17.1,1020.5,WNW,291,3.2,8.0,60,0.0,,SKC,0.0,729.00,VWS V14.01,
2010-04-21 12:50:00,25.0,16.2,1020.2,West,271,3.2,8.0,58,0.0,,SKC,0.0,703.00,VWS V14.01,
2010-04-21 12:55:00,24.8,15.9,1020.2,NNE,26,3.2,8.0,58,0.0,,SKC,0.0,691.00,VWS V14.01,

but my run shows: 19.3 C, 85% humidity

The one from a week ago is even worse.

Start time: 12:40, 21 minute run

2010-04-14 12:37:00,23.2,12.5,1020.5,West,270,0.0,0.0,51,0.0,,SKC,0.0,772.00,VWS V14.01,
2010-04-14 12:42:00,23.3,12.6,1020.5,West,270,3.2,3.2,51,0.0,,SKC,0.0,763.00,VWS V14.01,
2010-04-14 12:57:00,23.2,12.2,1020.2,SSE,161,0.0,3.2,50,0.0,,SKC,0.0,745.00,VWS V14.01,
2010-04-14 13:02:00,23.2,11.3,1020.2,SE,134,0.0,4.8,47,0.0,,SKC,0.0,733.00,VWS V14.01,

but the temperature shows as 13.6 C

Posted 1 year ago #
rlerdorf

senior admin
Joined: Nov '08
Posts: 257

Still trying to figure out what happened there. Clearing your weather data and re-fetching it using the exact same code seems to fix it. All I can think of right now is that right at the time when you uploaded your run, the wunderground weather data was incorrect. I think I also wiped out your run description just for the April 21 run. Sorry about that. You can re-enter it on your runs page there. Next time you upload a run and it seems off, see if you can grab the raw XML data right away so we can compare it to what is there a couple of hours later.

Posted 1 year ago #
ATJ777

senior member
Joined: Sep '09
Posts: 95

The weather data was correct at the time I uploaded the run (and subsequent changes to the weather station). I always check before uploading a run because I sometimes find the stations have no data and will use a different station in that case.

In the case of the Wednesday runs, there's 2 weather stations I can choose between. Both had temperatures almost identical but switching between these a day later still did not fetch the correct data.

Posted 1 year ago #
rlerdorf

senior admin
Joined: Nov '08
Posts: 257

But isn't the data correct now? Your April 21 run is listed at 24.9C. You ran at 12:27 for about 21 minutes. The data from your weather station for that timeframe is:

2010-04-21 12:25:00,75.6,61.2,30.15,SW,221,0.0,3.0,61,0.00,,SKC,0.01,846.00,VWS V14.01,
2010-04-21 12:30:00,76.0,61.6,30.14,West,270,1.0,6.0,61,0.00,,SKC,0.01,788.00,VWS V14.01,
2010-04-21 12:35:00,76.9,62.0,30.14,SSW,198,0.0,4.0,60,0.00,,SKC,0.01,766.00,VWS V14.01,
2010-04-21 12:40:00,76.9,62.0,30.14,WNW,284,0.0,3.0,60,0.00,,SKC,0.01,742.00,VWS V14.01,
2010-04-21 12:45:00,77.7,62.7,30.14,WNW,291,2.0,5.0,60,0.00,,SKC,0.01,729.00,VWS V14.01,
2010-04-21 12:50:00,77.0,61.1,30.13,West,271,2.0,5.0,58,0.00,,SKC,0.01,703.00,VWS V14.01,

This is from: www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=INSWWEST4&month=04&day=21&year=2010&format=l

So it ranged from 75.6 to 77.7F. 24.9C is 76.9F which is a valid representative temperature for that run.

Posted 1 year ago #
ATJ777

senior member
Joined: Sep '09
Posts: 95

Yes, it is showing the expected temperatures, now. (At least it was, until I changed the station)

The thing is, I did change the weather data and forced a refetch but I couldn't get it to change. I switched between INSWWEST4 and INSWWEST1 which both had pretty much the same temperature. I can't work out why when I changed the weather data and forced a refetch that I couldn't get the right results but when you did it, you could.

I probably shouldn't have done this, but hopefully it helps you debug the problem. I was able to reproduce the problem simply by changing the April 21 run from INSWWEST4 to INSWWEST1. Before I changed it, the run had 24.9ºC. After I changed it, it has 20.2ºC. INSWWEST1 has around 24.5ºC for the time of my run. So, it has happened again.

All I did:
* Went to the /ru page
* Changed the station for the run from INSWWEST4 to INSWWEST1
* Went back to the /pr page

and the data was wrong

I then clicked "Refresh runs and profile" but it was still wrong.

I then:
* Went to the /ru page
* Changed the station for the run from INSWWEST1 to INSWWEST4
* Went back to the /pr page

and it's back to 19.3ºC (which is wrong).

What am I doing wrong? Why does it work for you but not me?

Posted 1 year ago #
rlerdorf

senior admin
Joined: Nov '08
Posts: 257

Ah, I think I may have figured it out. Could you try doing the same thing again? Switch it back and forth and see if it gets it right now?

Posted 1 year ago #
ATJ777

senior member
Joined: Sep '09
Posts: 95

Still not right. The same as before. 19.3 with INSWWEST4 and 20.1 with INSWWEST1 (which seems to have moved 0.1º)

Posted 1 year ago #
rlerdorf

senior admin
Joined: Nov '08
Posts: 257

Ok, now I think I have it figured out. It appears it only affected runs where the weather station was manually changed via the /ru page UI, so very few. It should be working now.

Posted 1 year ago #
ATJ777

senior member
Joined: Sep '09
Posts: 95

It's working for me, too, now.

Posted 1 year ago #

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