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Author Topic: Spurious wind gust?  (Read 320 times)

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Offline Transporterman

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Spurious wind gust?
« on: September 27, 2021, 11:52:24 AM »
At 3.10pm I have a wind gust recorded of 72.9 MPH.  I was about 3 miles away and there was a heavy rain shower with strong wind gusts.  I don't really believe this figure although it has been windy generally today and whenever it's windy locally, it is much windier here in my exposed position.  The previous high for today was 40mph which I do believe.  I have seen 70mph here before but the garden records it by the stuff that blows around and I can't see much of that.

My new G1002/2551 station has been working flawlessly since May.  Does anyone else get these glitches with wind gusts? 
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Offline Transporterman

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Re: Spurious wind gust?
« Reply #1 on: September 27, 2021, 12:10:09 PM »
Forgot to add this-

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Offline Gyvate

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Re: Spurious wind gust?
« Reply #2 on: September 28, 2021, 09:08:48 AM »
your anemometer is the WH65/WS69 sensor array then. (GW1002 station model = GW1000 + WH65/WS69 WS68 array)
That one works rather reliably - what makes you think that the high gust recording is wrong ? Short local high speed gusts can occur every now and then.
And it matches even with your personal observation of the weather situation.

If it had been the ultrasonic anemometer of the WS80 (before firmware update), there were real glitches regularly showing 147 km/h due to wind/rain combinations creating unwanted effects in the ultrasonic measurements.
The new WS80 or an "old" one updated with the recently provided firmware update to compensate for such situations shouldn't show this behaviour anymore.

EDIT: correction station model
GW1001 = GW1000 + WH65/WS69
GW1002 = GW1000 +  WS68 + WH32 + WH40

The WS68 is known as a very stable and reliable instrument (as reported in this forum) => even though the anemometer is a different one, the argumentation remains the same  ;)
The WS68 and the WS69 both use cups for their anemometer.
« Last Edit: September 28, 2021, 05:30:54 PM by Gyvate »
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WS2350 1.6.7, GW1000(3) 1.7.7,WH2650 WiFi (2) 1.7.7 (test/backup), GW1100 2.3.1, GW2000(3) 3.1.1, HP2551 1.9.5,5.1.5;HP3500 1.7.2,WS3800 1.2.8, WN1910 1.2.3,WN1980 1.2.3;
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Offline Transporterman

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Re: Spurious wind gust?
« Reply #3 on: September 28, 2021, 01:19:12 PM »
It did seem a comparatively high gust even for a windy day.  Normally really big gusts like that occur here during squalls in storm conditions.   I think you might be right though because other people nearby reported bins flying around.  I suppose it could have been like a weak mini tornado.  I will see how it goes for now, I got used to seeing unreliable data with my WS1001 clone so I was worried that this was going the same way!   
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