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Re: mm to inches in rainfall reporting

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  • wuhu_software
    Is the rain bucket a separate piece on the station? If so you could probably devise some kind of bucket (like a 5 gallon bucket with a hole in it) to put it in
    Message 1 of 6 , Jan 22, 2012
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      Is the rain bucket a separate piece on the station? If so you could probably devise some kind of bucket (like a 5 gallon bucket with a hole in it) to put it in so that winds do not affect it.


      --- In wuhu_software_group@yahoogroups.com, "karenyoung1953" <astrokareny@...> wrote:
      >
      > Yes it was windy. That's one of the things I want to check with the WeatherLink software. On Weather Underground I had to go back to November 20th to find another significant rain event. The rain total came out as 1 inch - a little high, but not a "red flag". We were on Thanksgiving break, so I was not even in the area to see whether it rained hard or not. It does appear from the data, though, that when the wind gets over about 25 mph, sometimes there is a problem. However, in the desert, when it rains, the wind tends to blow, so that is not definitive.
      >
      > As to how it is mounted, I noticed recently that the mast on which everything is mounted is leaning a couple degrees from vertical. I have a work order into maintenance to fix that along with another unrelated issue. If that turns out to be the problem, I guess I'll have to disable rainfall reporting until it gets corrected.
      >
      > Karen
      >
      > --- In wuhu_software_group@yahoogroups.com, "wuhu_software" <wuhu_software@> wrote:
      > >
      > >
      > > Was it very windy out there? In high winds, the tipping buckets can go crazy depending on how they are mounted.
      > > -
      > > --- In wuhu_software_group@yahoogroups.com, "karenyoung1953" <astrokareny@> wrote:
      > > >
      > > > Thanks for your response. By the way, I may not be on the right track after all. By afternoon, the storm total was 26.40 inches! That's from a station in the high desert that typically gets 1/2 to 2/3 what I get at home (2000 feet higher in the mountains). At home my storm total was 0.33 inches of rain. So even dividing that 26.40 by 20, it still comes out quite large. On Monday when I go back to school, I will check the WeatherLink data for comparison. Maybe that will shed some light on the problem.
      > > >
      > > > Karen
      > > >
      > > > --- In wuhu_software_group@yahoogroups.com, "wuhu_software" <wuhu_software@> wrote:
      > > > >
      > > > >
      > > > > I am calling a function in the Davis DLL that is supposed to return inches. I am assuming that it knows about the .2mm tipping bucket but that may or may not be true. I will look around to see if I can find any more information.
      > > > >
      > > > > I think there are other WMII users here, maybe one with a .2mm bucket that might be able to tell us something about it.
      > > > >
      > > > > Let me know what you find.
      > > > >
      > > > > --- In wuhu_software_group@yahoogroups.com, "karenyoung1953" <astrokareny@> wrote:
      > > > > >
      > > > > > I have been suspicious for a while of a problem, but haven't had any rainfall to test. We are having our first rain in over a month, and my weather station at school is reporting to WUHU way too high a rainfall total for the storm (2.57 inches instead of an expected 0.1 to 0.2 inches based on a comparison with my home station). It is the weekend and I can't go to check on my suspicions without setting off alarms at school, so will have to try here on the yahoo group instead. My school station has a 0.2 mm tipping bucket (Davis Weather Monitor II) instead of the usual 0.01 inch. I suspect WUHU may be reading the data as inches, hence reporting a reading 20x as high as it should be. Is there a simple tweak for this which I can do when I get to school Monday morning? I don't recall seeing anything in the "tweak" screen, although I may have missed it. Of course, I may then have to wait another month for the next rain to see if it worked...
      > > > > >
      > > > > > Karen
      > > > > >
      > > > >
      > > >
      > >
      >
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