[wxqc] wxqc Digest, Vol 23, Issue 18
dsmweather
dsmweather at mchsi.com
Sun Sep 24 20:02:22 CDT 2006
I use generic telephone cables with the RJ-45's on the ends, but the
cables are not UV resistant as the cables from Davis. I've not had any
issues with them (yet) from UV deterioration, but I can tell you this,
when you introduce a female connector in the line as I had to do with
the WM-II, moisture IS a problem. The way I solved the moisture problem
was to paint all the connections with "liquid tape" to keep things dry.
Even the slightest bit of moisture in the cable connectors gave me quite
a problem until I painted them with the liquid stuff. Other than that,
there is no reason why generic telephone cable would not work. You do
have to use the 6 conductor cables, and not the 4's if your setup is
similar to the cabled version of the WM-II.
I solder my wires. That seems to be a skill of the past with crimp
connectors, but soldering and wrapping the connections seem to end the
moisture factor as well as pulling and strain on the connectors. I have
used the liquid stuff and recently purchased some self amalgamating tape..
Supposed to seal itself over time.. Just haven't had the opportunity to test
it. But liquid tape looks nice as well as does soldering.
Ah.. If you are not familiar with soldering, you need to use the lowest
wattage you can get so not to fry the board
-----Original Message-----
From: wxqc-bounces at lists.gladstonefamily.net
[mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of
wxqc-request at lists.gladstonefamily.net
Sent: Sunday, September 24, 2006 07:56 PM
To: wxqc at lists.gladstonefamily.net
Subject: wxqc Digest, Vol 23, Issue 18
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Today's Topics:
1. Re: Davis Vantage Pro2 Question (Trevor Hepler)
2. Re: Davis Vantage Pro2 Question (Sam Drinkard)
3. Re: Rainfall Rate (#8770-55660639-9551) (CUSTOMER SERVICE)
4. Re: Rainfall Rate (#8770-55660639-9551) (Gary J. Ferdinand)
5. Discussion of weather data quality issues
(Paul E.R. Packbier - PCR Environmental Inc.)
6. Re: Discussion of weather data quality issues (Evan Bookbinder)
7. Re: Rainfall Rate (Dave Helms)
----------------------------------------------------------------------
Message: 1
Date: Sun, 24 Sep 2006 11:36:46 -0400 (GMT-04:00)
From: Trevor Hepler <blznqgr at earthlink.net>
Subject: Re: [wxqc] Davis Vantage Pro2 Question
To: Discussion of weather data quality issues
<wxqc at lists.gladstonefamily.net>
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Message: 2
Date: Sun, 24 Sep 2006 13:12:31 -0400
From: Sam Drinkard <sam at wa4phy.net>
Subject: Re: [wxqc] Davis Vantage Pro2 Question
To: Discussion of weather data quality issues
<wxqc at lists.gladstonefamily.net>
Message-ID: <4516BC7F.3030403 at wa4phy.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Thomas,
I use generic telephone cables with the RJ-45's on the ends, but the
cables are not UV resistant as the cables from Davis. I've not had any
issues with them (yet) from UV deterioration, but I can tell you this,
when you introduce a female connector in the line as I had to do with
the WM-II, moisture IS a problem. The way I solved the moisture problem
was to paint all the connections with "liquid tape" to keep things dry.
Even the slightest bit of moisture in the cable connectors gave me quite
a problem until I painted them with the liquid stuff. Other than that,
there is no reason why generic telephone cable would not work. You do
have to use the 6 conductor cables, and not the 4's if your setup is
similar to the cabled version of the WM-II.
HTH
Sam
Thomas Giella KN4LF wrote:
> *Hello To All,*
> **
> *I'm new to the eGroup.*
>
> *I just purchased a Davis Vantage Pro2 with the optional fan
> aspirated temperature/humidty shelter. As all know the Pro2 has the
> integrated sensor suite (ISS) with wind vane/anemometer attached. You
> can run the included cable of 40 feet between the ISS and
> anemometer/wind vane unit and add cable extensions of up to 540 feet. *
> **
> *For better wind data accuracy I need to detach the anemometer/wind
> vane from the ISS and place it at 35 feet up on a mast, further away
> than the 40 foot included extension cable.*
> **
> *I have aquestion. Is the 40 foot extension cable a regular telephone
> type cable with male connectors on each end? In other words can I buy
> regular telephone cable extensions at Wal Mart or Home Depot to use
> between the ISS and anemometer/wind vane? Or do I have to buy the
> Davis (overpriced in my opinion) cables? *
> **
> *Next month I'm buying the model #6332 wireless version of the wind
> vane/anemometer and the cable thing will not be an issue.*
> **
> *Take Care,
> Thomas F. Giella, KN4LF
> Retired Meteorologist & Space Plasma Physicist
> Lakeland, FL, USA
> flycylone at tampabay.rr.com <mailto:flycylone at tampabay.rr.com>*
>
> *NWS Tampa Bay, FL SKYWARN Observer #POL-10A
> CWOP Station #AR692/KN4LF
> *
> *Lakeland, FL Daily Climatological Weather Data Archive:
> http://www.kn4lf.com/kn4lf22.htm
> September 2006 Lakeland, FL Daily Climatological Weather Observations
> http://www.kn4lf.com/kn4lf63.htm
> Florida/US Raw Weather Forecasting Resource Links:
> http://www.kn4lf.com/kn4lf13.htm
> Man Induced Climate Change Refuted:
> http://www.kn4lf.com/globalwarminglie.htm
> New Scientific Evidence for the Existence of God:
> http://www.cosmicfingerprints.com/audio/newevidence.htm
> *
> ------------------------------------------------------------------------
>
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>
> ------------------------------------------------------------------------
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------------------------------
Message: 3
Date: Sun, 24 Sep 2006 11:42:38 -0700 (PDT)
From: CUSTOMER SERVICE <customerservice at westernunion.com>
Subject: Re: [wxqc] Rainfall Rate (#8770-55660639-9551)
To: Discussion of weather data quality issues
<wxqc at lists.gladstonefamily.net>
Message-ID:
<26029186.1159123358166.JavaMail.root at ms1b.instantservice.com>
Content-Type: text/plain; charset=us-ascii
Hello Steve
Thank you for contacting Western Union. We are writing regarding your
inquiry.
Your email does not appear to be addressed to Western Union. We apologize
for any confusion.
If you have any additional comments or questions, please do not hesitate
to contact us at customerservice at westernunion.com.
Sincerely,
Steven
Customer Service Representative
www.westernunion.com
-----Original Message-----
From: Steve Dimse (steve at dimse.com)
Sent: Sep 24, 2006 7:00:09 AM
Subject: Re: [wxqc] Rainfall Rate
On Sep 24, 2006, at 3:09 AM, Victor Engel wrote:
> This is more impressive. It also more accurately reflects how hard
> it was raining at the time. Are either or both of these calculation
> methods standards? Which is preferred?
>
If you are asking about the data as sent to the APRS Internet System,
it is based on amounts, not rates. There are three values that may be
reported, last hour, last 24 hours, and since midnight local time.
The 1 hour and 24 hour totals are forward through MADIS.
Steve K4HG
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------------------------------
Message: 4
Date: Sun, 24 Sep 2006 17:15:57 -0400
From: "Gary J. Ferdinand" <alaparos at taconic.net>
Subject: Re: [wxqc] Rainfall Rate (#8770-55660639-9551)
To: "Discussion of weather data quality issues"
<wxqc at lists.gladstonefamily.net>
Message-ID: <NFEFIBAAOABBAHFOICFCAEGIFJAA.alaparos at taconic.net>
Content-Type: text/plain; charset="US-ASCII"
Steve, I bet you have some heads being scratch over at WU!!
> -----Original Message-----
> From: wxqc-bounces at lists.gladstonefamily.net
> [mailto:wxqc-bounces at lists.gladstonefamily.net]On Behalf Of CUSTOMER
> SERVICE
> Sent: Sunday, September 24, 2006 2:43 PM
> To: Discussion of weather data quality issues
> Subject: Re: [wxqc] Rainfall Rate (#8770-55660639-9551)
>
>
> Hello Steve
>
> Thank you for contacting Western Union. We are writing regarding your
> inquiry.
>
>
> Your email does not appear to be addressed to Western Union. We
> apologize for any confusion.
>
>
> If you have any additional comments or questions, please do not hesitate
> to contact us at customerservice at westernunion.com.
>
> Sincerely,
> Steven
> Customer Service Representative
> www.westernunion.com
>
>
>
> -----Original Message-----
> From: Steve Dimse (steve at dimse.com)
> Sent: Sep 24, 2006 7:00:09 AM
> Subject: Re: [wxqc] Rainfall Rate
>
>
> On Sep 24, 2006, at 3:09 AM, Victor Engel wrote:
>
> > This is more impressive. It also more accurately reflects how hard
> > it was raining at the time. Are either or both of these calculation
> > methods standards? Which is preferred?
> >
> If you are asking about the data as sent to the APRS Internet System,
> it is based on amounts, not rates. There are three values that may be
> reported, last hour, last 24 hours, and since midnight local time.
> The 1 hour and 24 hour totals are forward through MADIS.
>
> Steve K4HG
> _______________________________________________
> wxqc mailing list
> Post messages to wxqc at lists.gladstonefamily.net
> To unsubcribe or change delivery options, please go to:
> http://server.gladstonefamily.net/mailman/listinfo/wxqc
>
> The contents of this message are the responsibility of the author.
>
>
> _______________________________________________
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>
------------------------------
Message: 5
Date: Mon, 25 Sep 2006 08:47:38 +1000
From: "Paul E.R. Packbier - PCR Environmental Inc." <paul at pcrguam.com>
Subject: [wxqc] Discussion of weather data quality issues
To: wxqc at lists.gladstonefamily.net
Message-ID: <DE69260B-3DBE-4070-ADEF-95521E7E8F36 at pcrguam.com>
Content-Type: text/plain; charset=WINDOWS-1252; delsp=yes;
format=flowed
Evan:
Any idea what causes the 140 mbar "pops" every six hours at the Guam
NWS/NOAA weather station <http://weather.gladstonefamily.net/site/PGUM>?
Paul
On Sep 25, 2006, at 12:38 AM, wxqc-request at lists.gladstonefamily.net
wrote:
> Date: Fri, 22 Sep 2006 19:00:11 -0500
> From: Evan Bookbinder <Evan.Bookbinder at noaa.gov>
> Subject: Re: [wxqc] my rain collector vs. the birds
> To: Discussion of weather data quality issues
> <wxqc at lists.gladstonefamily.net>
> Message-ID: <00e501c6dea3$3dabc2a0$6701a8c0 at stormalerthp>
> Content-Type: text/plain; format=flowed; charset=iso-8859-1;
> reply-type=original
>
> A fake cat also works. In all seriousness, birds became a HUGE
> problem with
> the new NWS Ultrasonic wind sensors -- hawks in fact. The 3 pronged
> sensor
> made a perfect perch for the birds, causing erroneous wind gusts
> (in some
> cases near hurricane force) to be observed when the bird was active
> on his
> perch.
>
> Several attempts to remove the birds by providing alternate landing
> areas
> were unsuccessful -- they prefer the 10m perch to scout out their
> prey. The
> solution that works ended up being a auto-motion sensor attached to
> a strobe
> light and a blaring siren. Two days of that and the sites have not
> had any
> bird problems :)
>
> Evan
_____________________________________________
PCR Environmental, Inc. - SBA Section 8(a) & HUBZone Certified WOSB SDB
266 Father San Vitores Street
Tamuning, Guam 96913-3622 USA
(671) 646-3560; Fax (671) 646-3563
http://www.pcrguam.com
? integrity ? competence ? professionalism ?
------------------------------
Message: 6
Date: Sun, 24 Sep 2006 18:30:59 -0500
From: Evan Bookbinder <Evan.Bookbinder at noaa.gov>
Subject: Re: [wxqc] Discussion of weather data quality issues
To: Discussion of weather data quality issues
<wxqc at lists.gladstonefamily.net>
Message-ID: <45171533.5020500 at noaa.gov>
Content-Type: text/plain; charset=windows-1252; format=flowed
You'd have to ask Phillip on this one. Apparently the decoder bombs on
the 00, 06 and 12Z observations on the 23rd. However looking at the raw
METARs, there's nothing wrong with them.
METAR PGUM 230554Z 10007KT 10SM FEW018 SCT040 SCT120 27/25 A2981
METAR PGUM 231154Z 08003KT 10SM FEW015 26/24 A2989
Given the times of occurrence, I'm wondering if a synoptic observation
from an alternate source is entering his system and being mis-decoded.
Again, the actual observations from the site are fine...
http://www.uswx.com/us/stn/?code=c&n=60&stn=PGUM
Evan
Paul E.R. Packbier - PCR Environmental Inc. wrote:
> Evan:
>
> Any idea what causes the 140 mbar "pops" every six hours at the Guam
> NWS/NOAA weather station <http://weather.gladstonefamily.net/site/PGUM>?
>
> Paul
>
> On Sep 25, 2006, at 12:38 AM, wxqc-request at lists.gladstonefamily.net
> wrote:
>
>
>> Date: Fri, 22 Sep 2006 19:00:11 -0500
>> From: Evan Bookbinder <Evan.Bookbinder at noaa.gov>
>> Subject: Re: [wxqc] my rain collector vs. the birds
>> To: Discussion of weather data quality issues
>> <wxqc at lists.gladstonefamily.net>
>> Message-ID: <00e501c6dea3$3dabc2a0$6701a8c0 at stormalerthp>
>> Content-Type: text/plain; format=flowed; charset=iso-8859-1;
>> reply-type=original
>>
>> A fake cat also works. In all seriousness, birds became a HUGE
>> problem with
>> the new NWS Ultrasonic wind sensors -- hawks in fact. The 3 pronged
>> sensor
>> made a perfect perch for the birds, causing erroneous wind gusts
>> (in some
>> cases near hurricane force) to be observed when the bird was active
>> on his
>> perch.
>>
>> Several attempts to remove the birds by providing alternate landing
>> areas
>> were unsuccessful -- they prefer the 10m perch to scout out their
>> prey. The
>> solution that works ended up being a auto-motion sensor attached to
>> a strobe
>> light and a blaring siren. Two days of that and the sites have not
>> had any
>> bird problems :)
>>
>> Evan
>>
>
> _____________________________________________
> PCR Environmental, Inc. - SBA Section 8(a) & HUBZone Certified WOSB SDB
> 266 Father San Vitores Street
> Tamuning, Guam 96913-3622 USA
> (671) 646-3560; Fax (671) 646-3563
>
> http://www.pcrguam.com
>
> ? integrity ? competence ? professionalism ?
>
>
>
> _______________________________________________
> wxqc mailing list
> Post messages to wxqc at lists.gladstonefamily.net
> To unsubcribe or change delivery options, please go to:
> http://server.gladstonefamily.net/mailman/listinfo/wxqc
>
> The contents of this message are the responsibility of the author.
>
------------------------------
Message: 7
Date: Sun, 24 Sep 2006 20:56:16 -0400
From: Dave Helms <dshelms at comcast.net>
Subject: Re: [wxqc] Rainfall Rate
To: Discussion of weather data quality issues
<wxqc at lists.gladstonefamily.net>
Message-ID: <45172930.9000608 at comcast.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Victor,
I think the WD values you show are meant to be an a 1 hour rainfall
forecast based on the most recent rate of fall measurement which is
sampled over a very short period of time (10 seconds?).
Dave
CW0351
Evan Bookbinder wrote:
> Sounds like a bug in Weather Display??? The Davis VP reports a
> separate rainfall rate which would have numbers that you calculated in
> the second listing. The second is the standard for rainfall rate,
> which as you surmised, is different from hourly rainfall accumulation.
>
> Evan
>
>
>
> ----- Original Message -----
> *From:* Victor Engel <mailto:brillig at gmail.com>
> *To:* Discussion of weather data quality issues
> <mailto:wxqc at lists.gladstonefamily.net>
> *Sent:* Sunday, September 24, 2006 2:09 AM
> *Subject:* [wxqc] Rainfall Rate
>
> Today, my weather station had its first real storm. It measured
> 1.66 inches in 40 minutes. The rainfall amounts during the storm
> went like this:
>
> 17:16 0
> 17:21 0.16
> 17:26 0.43
> 17:30 0.79
> 17:35 1
> 17:41 1.29
> 17:46 1.53
> 17:50 1.64
> 17:56 1.66
>
>
> where the second column shows the daily total.
>
> Weather Display reported a rainfall rate matching these numbers. I
> suppose that is accurate if the rainfall rate is meant to be an
> average rate over the past hour. But obviously, if what we really
> want to know is how hard it was raining while it was coming down,
> then the rate should be the new accumulation divided by the
> elapsed time. That gives the following chart:
>
> 17:16
> 17:21 1.92
> 17:26 3.24
> 17:30 5.4
> 17:35 2.52
> 17:41 2.9
> 17:46 2.88
> 17:50 1.65
> 17:56 0.2
>
>
> This is more impressive. It also more accurately reflects how hard
> it was raining at the time. Are either or both of these
> calculation methods standards? Which is preferred?
>
> Victor
>
> P.S. The rest of town received anywhere from 0 to 1.44 inches,
> with common amounts being under 0.1 inch. I didn't realize the
> whole town wasn't unundated until the storm had passed and
> internet access was restored so I could check around.
>
>
------------------------------------------------------------------------
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>
>------------------------------------------------------------------------
>
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------------------------------
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