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Weather Conditions Discussion / Re: Dramatic air temperature variations
« Last post by DaleReid on Today at 07:29:59 PM »
This whole area of Wisconsin here and to the east is at the bottom of a glaciated area, and pretty darned flat.  A few rolling hills but nothing over a hundred feet or so.

If the glacier 11,000 years ago didn't scrub it flat, then old Lake Wisconsin which spread for over a hundred miles to the east mudded in and was quite sedimentary.

Where I grew up in the central part of Wisconsin, just north of Wisconsin Dells where this whole lake drained out in a matter of days creating the beautiful rock formations there, the ground is so flat that the drop per mile towards the Wisconsin River is only a foot or so per mile.  My wife was amazed at how flat it is.

Anyway, height variations would not explain the temperature differences, other than cold air 'draining' or 'pooling' in the valley areas, as small as they are.

I do recall driving home from our family farm one Christmas eve, in a new (for then) car with an outside thermometer in it.  Wow, high tech.  Anyway, with everyone else asleep I was monitoring the temps (already -20 F which was chilly) and noticing that the temperatures were as much as 3 degrees in variation, which on a crystal clear calm cold high pressure night surprised me that it was changing that much.   
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WeatherUnderground / Re: February 1-4 Historical Info Vanished
« Last post by chrispyt2 on Today at 05:18:51 PM »
Well that was faster than I thought. My data for 2/1-2/4 has been restored.
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Windy.com / Re: You can now upload to Windy
« Last post by K5GHS on Today at 05:15:40 PM »
I will have to look at this when I have more time to see if I can do it with the GW1000B or Ambient station later.  Don't have much time before work today.  I'll monitor the topic for sure though.
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Davis Instruments Weather Stations / Re: Tipping Spoon upgrade for VP2
« Last post by CW2274 on Today at 04:45:19 PM »
Just to add, the whole reason I went with the RW was because my ISS is mounted on a tripod and would shimmy in stronger wind, so I was fearful of false tips. With the RW option, I mounted the bucket on my wall for the utmost in stability and levelness, a must for tipper accuracy.
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Looks like in the past week there have been some service issues with stations falling off the map. I don't think that any station stopped being able to report. So the good news is no data loss. Although some early February data missing reports have been made. I think that data will return if it is anything like the previous data missing from July 2019.

Today as I checked a few times during the day the map started showing stations bit by bit. It is rather interesting that they don't just populate the map all at once. It seemed to happen over the course of a few hours. My neighbors station (500 feet away) showed up first. Then one of my stations showed up much later (I have several stations in the same area)...and then finally it seems to be a full map now (maybe).

Good news also is that the wind vane spider issue seems to have been fixed. The map (little map on dashboard) is updating and showing wind correctly.

Wondermap (the big map) though does freeze still and requires browser refresh.

I haven't stared at it more than a minute or two, but it appears rapidfire updates may be starting to show a bit more frequently. I'll get an occasional 20-30 second pause, but I'm seeing many more in the 3-8 second range today.
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Looks like in the past week there have been some service issues with stations falling off the map. I don't think that any station stopped being able to report. So the good news is no data loss. Although some early February data missing reports have been made. I think that data will return if it is anything like the previous data missing from July 2019.

Today as I checked a few times during the day the map started showing stations bit by bit. It is rather interesting that they don't just populate the map all at once. It seemed to happen over the course of a few hours. My neighbor's station (500 feet away) showed up first. Then one of my stations showed up much later (I have several stations in the same area)...and then finally it seems to be a full map now (maybe).

Good news also is that the wind vane spider issue seems to have been fixed. The map (little map on dashboard) is updating and showing wind correctly.

Wondermap (the big map) though does freeze sometimes still and requires browser refresh.

baby steps....and patience.  I just don't know why WU doesn't just copy the systems(s) and create a test environment to play [test] with.
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Davis Instruments Weather Stations / Re: Tipping Spoon upgrade for VP2
« Last post by CW2274 on Today at 04:21:17 PM »
The 211 has the dual counter, you'll be disconnecting it anyway, so don't spend the extra money. You'll need to supply the cable and RJ11, something easy to pick up a your local hardware store. The other end is where you hard wire into the RW wires, all two of them.
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AcuRite goes out of their way to keep you from accessing your data locally.

There will soon be a flood of AcuRite fans mentioning all kinds of hacks/kludges/interceptors/screen scrapers suitable for hobby use, but none of them are as simple as plugging a Davis logger into their console and getting a USB/serial/ethernet handoff with a documented API and well-supported in commercial PWS software.....

Ok so the next question is, if I went with Davis, what would I need to capture a full days worth of data that I can export to a CSV file?
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Davis Instruments Weather Stations / Re: Vantage Vue fault
« Last post by johnd on Today at 03:56:57 PM »
Davis will only want to sell you a new ISS, I donít believe they have any stock of the M revision kits.

There is no problem at all with the supply of M revision wiring harnesses (though you do have to be aware that there are two types depending on whether the solar panel is hardwired to the harness or not). The spares difficulty is that trade supplies of Vue ISS spares for revisions A-F are essentially exhausted.

The issue is more that the harnesses are priced relatively close to the cost of a new ISS, which is not too surprising given that the harness contains most of the sensors and circuitry. So the simplest option for many users is to opt for a complete replacement ISS, which has the added advantage (here in the UK at least) of a new 2-year warranty vs a more limited warranty on the harness as a spare part.
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Weather Conditions Discussion / Re: Dramatic air temperature variations
« Last post by Waimarie on Today at 03:54:15 PM »
I live in the Wairarapa, a very wide "valley" at the bottom of the North Island of New Zealand.  I used to work in Wellington on the other side of the mountain range on the western side of the valley.  While driving to work, in the mornings, I used to notice the temperature variation as I travelled to work in the car.  When it was cold at home (cold here being -1 or -2 celcius at best) the temperature would steadily rise as I went up the "hill" to maybe +5 or+6 at 2-300ft and it would stay there for a while and then started falling again toward the summit of the road (1800ft).

So yes cold air definitely "pools" in low lying areas and cold air being denser than warm, it will sink and the coldest will find the lowest place.

Have you tried to correlate the temperatures to altitudes?  That would prove interesting.

Ian
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