Wunderground forecast

Discussion in 'Weather Watcher - Help' started by DrWho, Jul 22, 2014.

  1. DrWho

    DrWho Well-Known Member

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    Wunderground in WWL has a forecast of sunny days for the next 10 days but when I go their web site it's showing cloudy and chance of rain in the next couple days. Similar differences show up occasionally. Any ideas why?

    Also, as far as their forecast, do they use National Weather Service or their own forecasting models?

    This is for the Portland, Oregon USA area.
     
  2. msinger

    msinger Administrator
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    Weather Underground has various data feeds available. They recently redesigned their website, so they might have switched to another data feed too.

    Which weather station are you using? I'd like to take a look at those differences.

    I'm not sure where Weather Underground gets its forecast data from. They are owned by The Weather Channel, so I would assume they are using whatever The Weather Channel is using.
     
  3. DrWho

    DrWho Well-Known Member

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    I'm using Marylhurst University, near 90768. Since we are so close to Portland, Oregon I assume the forecast is actually for Portland as we don't have our own unique weather patterns.
     
  4. msinger

    msinger Administrator
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    I know NWS issues forecasts per zip code. I'm not sure if Weather Underground and/or WeatherBug modify at all based on terrain or other factors that might affect the forecast.

    Thanks for the weather station. I'll take a look and get back to you.
     
  5. msinger

    msinger Administrator
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    Marylhurst University is in Lake Oswego, OR. NWS has different forecasts for Lake Oswego and Portland, so that might explain the differences you were seeing. Here's a comparison from NWS:

    [​IMG]

    And here's a comparison between Weather Watcher and Weather Underground:

    [​IMG]

    Weather Watcher and Weather Underground do not match 100%, but both forecasts are fairly close.
     
  6. DrWho

    DrWho Well-Known Member

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    Thanks, Mike but I'm still confused. Why wouldn't WWL displayed forecast be the same as the Weatherunderground website forecast? I assume WWL pulls raw data info and just displays so my assumption would be that WU isn't sending the same data for WWL as they display on their site. But why? I must be missing something.

    I had the same thing happen this morning. Note the website showed clear icons from Friday on while in WWL Fri and Sun are partly cloudy. Note too the temperature forecast can be off too. Tuesday shows 87 (website) vs 82 (WWL).

    FWIW, WWL version 7.2.5

    [​IMG]

    Weather underground web site

    Below are from WWL

    [​IMG]


    [​IMG]
     
  7. msinger

    msinger Administrator
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    The top of your Weather Underground image is cut off. What's the URL for that page?

    They could be using a different weather data feed for their website. I know they are not using my data feed for sure (since they created a custom data feed for Weather Watcher). I would assume the data should come from the same database though.
     
  8. DrWho

    DrWho Well-Known Member

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  9. msinger

    msinger Administrator
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    Okay. Thanks for confirming.

    I'll check with Weather Underground and see if they can explain the difference.
     
  10. DrWho

    DrWho Well-Known Member

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    Mike, did you ever hear back from Weatherunderground on why the difference?

    There is a substantial difference today. Their web site shows one rain forecast and WWL shows another. I've attached screenshots of the two. Note that this for the same stations and zip.

    Also, the web forecast is more in line with forecasts from other sources so the WWL forecast is way off.


    [​IMG]

    [​IMG]
     
  11. parkd1

    parkd1 Well-Known Member

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    I see that you are using 7.2.5. Try using the newest version that is 7.2.17
     
  12. DrWho

    DrWho Well-Known Member

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    I'm using 7.2.16. When I select Check for Update it reports back that's the latest version.

    Out of curiosity, how did you determine I was using 7.2.5?

    Thanks.
     
  13. parkd1

    parkd1 Well-Known Member

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  14. DrWho

    DrWho Well-Known Member

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    Thanks. I should have reported the version number as an update.

    I've installed 7.2.17 but Weatherunderground still shows a significant difference between their web site and what's reported in WWL. I'm assuming they are not giving the correct data to WWL.
     
  15. parkd1

    parkd1 Well-Known Member

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    Now we just wait and see if anything can be done about this.
     
  16. DrWho

    DrWho Well-Known Member

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    I can only hope.

    I much prefer WU web site vs Weatherbug if I need to go the site. But Weatherbug in WWL is at least consistent between the two and generally accurate. Or at least as accurate as it can be in Oregon.
     
  17. parkd1

    parkd1 Well-Known Member

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    I am in Oregon too. The Salem / Turner area.
     
  18. msinger

    msinger Administrator
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    The newly redesigned Weather Underground website uses Weather.com's forecast models. Weather Watcher is still using the Weather Underground forecast models. I'm working with them to switch my data feed over to Weather.com's forecast models. I'll follow up here when I have an update.
     
  19. msinger

    msinger Administrator
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    My Weather Underground data feed was updated today around 2 PM EST. If you're using an international weather station, you won't have any daily forecast data. I'm going to release a new version to work around that issue until my data feed can be fixed.
     
  20. msinger

    msinger Administrator
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