[wxqc] Spike in quality report?

[Evan Bookbinder]

This might be something the software developers should be made aware of. 
We'll occasionally see a random barometric spike here at the WFO too, 
which I assume is simply a bad packet. Bad packet or bad measurement 
aside, I can't imagine that it would be too terribly difficult to have 
the decoding software compare the current value to the last stored value 
within so many seconds (in case the system has been off for a while). If 
the difference exceeds some arbitrary value, toss it (or at least store 
it and flag it).

What I find most interesting is that two spikes occurred from two nearby 
stations almost simultaneously. The barometer went in opposite 
directions. My guess is that something causing a lot of interference 
passed through your locations, causing a bad set of packets to be 
ingested. The time is a bit off, but we'd see that here at the NWS when 
the upper air balloon was launched. The signal overwhelmed one of our 
satellite received systems on a very nearby  frequency. Time to call the 
UFO reporting center :)))))

Evan

Gerald Buxton wrote:

> I have seen this too Jim, on my qc reports. I believe the last time I 
> saw it, I looked back at the weather data link and saw that one of the 
> reportings was way high (I believe it was barometer)... don't know 
> though whether that was actually sent by the WXTrak device, or the 
> packet was decoded wrong by a receiving station.
>
> Jerry
> AR194
> N0JY
>
> --Original Message Text---
> *From:* Jim McMurry
> *Date:* Tue, 3 Jan 2006 06:57:50 -0600
>
> I'm just wondering if anyone has seen this happen before and knows 
> what might have caused it.
>
> _http://weather.gladstonefamily.net/qchart/C3882?date=20060103&addnl=AR825&Add+to+charts=Add+to+charts&.cgifields=addnl_
>
> Just prior to 1000Z it shows an extreme spike that doesn't show up in 
> my logs. The same thing happened to AR825 which is the closest station 
> to me.
>
> None of the other close stations seemed to have the same thing happen. 
> Also wondering whether a spike like this affects our averages or if 
> the system recognizes it as an anomaly and "throws it out".
>
> Jim McMurry
> C3882
>
>
>
>------------------------------------------------------------------------
>
>_______________________________________________
>wxqc mailing list
>wxqc at lists.gladstonefamily.net
>http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc
>
>The contents of this message are the responsibility of the author.
>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Evan.Bookbinder.vcf
Type: text/x-vcard
Size: 210 bytes
Desc: not available
Url : http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060103/329e8bbb/Evan.Bookbinder.bin