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NOAA data completely wrong/off

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8 comments

  • Avatar
    Bill

    I am finding the same problem.

    I have a weather station in my back yard, a Davis Vantage Pro, and I upload to WeatherUnderground.

    I have my HD-12 with NOAA, WeatherUnderground and CIMIS.

    I notice that NOAA is way off and that the times that my RM updates from WeatherUnderground is VERY seldom, like once a day!

    I upload to WU every 3 seconds, so my data is very current.  Why does the RM update from WU so seldom, while NOAA is frequent?

    I am going to try turning NOAA off as I don't know where NOAA is getting their data from, and it is not correct.

  • Avatar
    Mike

    Does your zipcode start with a zero?  Mine does and I'm wondering if the Rainmachine is not passing the zero to NOAA and I'm getting west coast weather or a foreign country.

  • Avatar
    Bill

    No, mine starts with 9.  I thought RM based your location on your LAT and LONG... You could lookup the LAT/LONG numbers on Google earth just to check where the RM thinks you are.

    Hopefully a RM support person will be able to answer your question.

  • Avatar
    Mike

    RM knows where I am since the other three weather services are correct.  Its only NOAA so I assume my RM is not getting the info to NOAA correctly.

  • Avatar
    Bill

    After several days of NOT using NOAA, I find my watering was much better.

    Don't know why NOAA isn't more accurate for local conditions.  Maybe they average a large area which doesn't necessarily give accurate results for a more localized location.

  • Avatar
    Mike

    Mine was 20 degrees off. So I dont think thats the case for me. It wasnt 20 degrees different anywhere near me. I'm in the NY/NJ metro area so we have tons of weather stations around us.

  • Avatar
    Enrique chavez

    I’ve also had the same problem for over a year now. Seems that it’s worse during the summer months. Presumably because it’s drier and hotter and RM’s forecast engine doesn’t adjust properly. Forecast for me as shown by RM is off in temperature by about 10-15deg and cloud cover prediction. Last year nearly all my plants and grass died because I had poorly assumed Rainachine would be smart.

    I even have a PWS that updates to Weather Underground and I have WU feeding to RM.

    The most recent change I’ve done is disable NOAA and let WU feed RM. A week later and the forecast still doesn’t look right.

    Now I’ve defaulted to leaving the system operating with a constant irrigation setup, aka a dumb sprinkler controller.

    Yes, I’ve reset and reinstalled the app on my phone and also cross checked settting via their web interface and fiddled around with all their settings. Yes of course the controller has the latest firmware.

  • Avatar
    Mike

    My problem went away.  I dont know if it was changing my zipcode by one number to the town just north or me, or eventually some bug was corrected and the problem went away that actually solved the problem.

     

    I noticed when I started typing my zipcode it comes up with a choice between my correct town or some place in France with I assume a similar foreign zipcode.  Even tho I tried choosing my location via map, zipcode, etc it was always wrong for NOAA.  My theory is that when rainmachine passed my location info to every weather service only NOAA was assuming I was in the foreign location maybe?  So i went for a few months with NOAA off, then I tried using a zipcode for a town close to mine, and the problem went away (even with NOAA turned on).  Then a few months later I had my unit services for a bad Wifi antenna and when I got it back I had to put my location in again and everything is working fine.

     

    I just logged into my unit to see if my location was set using address, zipcode, or map click.  I cant tell which was used but it has my street and town name.  But now it tells you the lat and long of where it thinks you are.  I dont think it did that years ago when I first had this problem.

     

    I suggest you go into your machine;s settings with a web browser and see what your longitude and lat is, and cut and paste them into google maps and confirm your unit thinks it is where you actually are.

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