cendrizzi@gmail.com

  • 1
  • Problem
  • Updated 3 years ago
  • (Edited)
I'm seeing a lot of issues pulling down current conditions. I pull them once an hour for certain locations, using lat / long. I'm finding that even looking at the exact same weather station on your site vs what was provided to me using the api is resulting in very different precipitation rates.

For this station you show:


However, going off your current conditions for the same station on the same day you provide the daily prec actually being 2.09in. Furthermore if you go into your "Hourly Weather History & Observations" section for the day, it adds up to essentially being 2.2 (so very close to what you provide over the API).

The weather station is 42.25111008,-84.95555878, called KRMY.

A customer has reported that your sites historical results for the calendar are the more accurate, but I'm not getting them, or anything even close to them. 

Just to be clear, when I say you provided that value I mean on the 30th on the last hour of the day the exact value I received for prec_today_in was 2.09, and as shown your site gives 1.05.

If I do a historical query, which is too expensive to do a lot of. The summary says 1.05, and each hours prec is -9999. So the only way I can even see a way to match your prec values would be by using historical data, but by then it would do me little good anyway. 

On the 31st the issue gets to be a little more strange in that your precip_1hr_in field throughout the day, and the prec_today_in  do little to agree with each other. By the end of the day it says the prec_today_in field is valued at "0.2", but the aggregate of each hours precip_1hr_in field for the day is closer to 2.1. On your site however you once again show probably the better value at 1.04. So on the 31st of last month not a single prec. value I'm looking at comes close to matching (a little difference would make sense but each is a half inch or more off).

Prec rates are extremely important to me and the data being given gives little confidence. I have no idea how you guys generate the data on your end but how in the world is the prec information in so much conflict with each other. I am hoping it's just some stations and not the majority but is there any checking to ensure there is consistency? Also, how is the value from your calendar being generated and how can I get that value on the day of from your API?

I really hope you can provide me assistance on this as it's crucial for me and my business.
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cendrizzi

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  • VERY FRUSTRATED

Posted 3 years ago

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cendrizzi

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Nothing? I would love to at least understand hot this stuff can happen??
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Tim Roche, Official Rep

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There are a couple reasons this could be.

The most likely one, is that while we give you the current information in local time today.  Airport history data is officially recorded in GMT, so the recording periods are different.
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cendrizzi

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Any advice on how to do this then?
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Tim Roche, Official Rep

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using the history data will be the most official way to report precipitation.