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Davis Instruments Weather Stations / High wind speed spike!
« Last post by zakos52 on Today at 05:00:21 AM »
On the new Davis pro2 ISS once a month or so, with very low wind speeds (<15Km/h), a high wind peak(spike) appears with a value of about 117.5Km/h each time!
 
The anemometer is in a different pen than the ISS, which has a height of 7 meters

Full length anemometer cable is new with no visible breaks

The connection of the cable (RJ-11) to the board is correct, i.e. it snaps normally into the socket with a "click"
 
Where can this "ghost" gust come from?



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my WS69 always showed lower values than my WS80s, WS90s and my WS68 ...
my WS68 and WS80 (same height) are +/- in tune (the WS80 reads usually a bit higher, but an ultrasonic catches 3D-components which a 2D-design (cups) won't catch) - so that's in my opinion systemic and not a problem.
But the order of magnitude is OK.
And my WS85/WS80 comparisions so far look acceptable ...
3
arrived and mounted with a WN32 inside - see also https://meshka.eu/Ecowitt/dokuwiki/doku.php?id=start#reviews
now waiting for data to accumulate
Why don't you install everything on the roof I see back there?
no permission - and too difficult to reach - if you mean the roof in the background, it's a neighbouring premise.
My WS68/WS80 are with a trick above the roof. But for a T/RH sensor 2m above ground are quite good ...
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wind data difference with ws69  :roll:
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arrived and mounted with a WN32 inside - see also https://meshka.eu/Ecowitt/dokuwiki/doku.php?id=start#reviews
now waiting for data to accumulate
Why don't you install everything on the roof I see back there?

6
They are extremely rare, this is a very difficult field, personally I have been passionate about it for decades, but I have not yet managed, perhaps due to inability, to understand which of my instruments is giving me the real temperature of the air passing through it, so I am not one of those select few, who I said are extremely rare, who know the truth.

Unfortunately I limit myself to silly assessments on the radiative error, concentrating in the time slot from 12pm to 6pm when, on summer days, the maximum temperature has already been reached and remains more or less stable in the following hours, the solar radiation has presumably already reached its maximum level and I try to understand something about it, they are not the ideal adiabatic conditions but they are the least turbulent ones.

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Outside that range, the differences in time constants, in the timing of the detection systems, in the different behaviors with respect to the variation of heat exchanges, make it impossible for me to be part of the selects.

M.
7


Edit: is a 1.25 inch pipe the right diameter to mount the WS series?



Just 1 comment.
 I'd used antenna masts for decades, but I wasn't thrilled using thin wall "antenna mast" (especially with the current prices) for my PWS.
I found 1-3/8" and 1-5/8" top rail for chain link fences.  Thicker then antenna mast, galvanized and fair prices.
IMO, worth considering.

Good Luck
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Weather Website PHP/AJAX scripting / Re: Icons Missing / wxforecastmap.php
« Last post by rrrick8 on Yesterday at 11:22:34 PM »
It appears you're missing a bit of code from
Quote
if(isset($gridpointJSON['periods'][0])) { // only generate if we have data

for ($i=0;$i<count($gridpointJSON['periods']);$i=$i+2)  {
That should be
Quote
if(isset($gridpointJSON['periods'][0])) { // only generate if we have data

global $NWSICONLIST;
load_lookups();

for ($i=0;$i<count($gridpointJSON['periods']);$i=$i+2)  {

Whoop! There it is!  Thanks as always Ken. Don't know how I missed it on the Difference Checker. But I have been hitting the Hydrocodone since surgery Tuesday.
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Weather Website PHP/AJAX scripting / Re: wxriverpage etc
« Last post by saratogaWX on Yesterday at 10:46:10 PM »
The old wxriver.php and river-fetch.php no longer work due to the change of AHPS to NWPS website.  They no longer offer the XML files needed by those scripts.  For now, I'd remove them from your menu and stop any cron job runnng River/river-fetch.php as it will not succeed in getting data.

I'm (slowly) rewriting the scripts to use the available JSON feeds, but it is a hard slog and I'm not done.  No ETA on when it will be finished at this time.
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Weather Website PHP/AJAX scripting / Re: wxriverpage etc
« Last post by Silversword on Yesterday at 09:36:57 PM »
Hi All,

Checking my River Page and it is completely busted at http://www.dwayneyamato.com/wx/wxriverpage.php

I updated some of the scripts but no joy.

Suggestions and recommendations very much welcome.

Aloha,

--Stan Y.
  Maui, Hawaii
 
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