Wireshark is a free ethernet network protocol analyzer. The tools of us network engineers. :)
-------- Original Message --------
Subject: [USMA:43345] Re: Metric NWS forecasts
From: James Frysinger <[email protected]>
Date: Tue, March 03, 2009 12:55 pm
To: "U.S. Metric Association" <[email protected]>
Cc: "U.S. Metric Association" <[email protected]>
The elevation of the indicated forecast area on the map shown on the
page I referred to, and as pointing to my Middle Tennessee location,
shows elevations in feet.
As luck would have it, I am not situated squarely within a forecast grid
cell but am near a corner of four such cells.
I am not familiar with Wireshark or with the website from which you
downloaded this data, Pierre. I took a quick look just now at their
Users Guide and their man page and had no success seeking 'weather' for
the command description.
I noticed that this data seems to come from the METARs and is "decoded"
by KRDU (your local NWS Forecast Office). METARs provide present/last
observations and do not provide forecasts. KRAH must be providing the
forecast info. I think you might like like to contact them about
formatting issues.
http://www.erh.noaa.gov/rah/
[email protected]
Jim
Pierre Abbat wrote:
> On Tuesday 03 March 2009 09:29:10 James Frysinger wrote:
>> You might start with your local National Weather Service Forecast
>> Office. Third party websites should be approached separately. I am not
>> familiar with any "weather -f" command.
>
> I ran Wireshark while running "weather -f" ("-f" means forecast; without the
> option it displays current weather) and captured the following conversation:
> ---
> GET /pub/data/forecasts/city/nc/raleigh_durham.txt HTTP/1.0
> Host: weather.noaa.gov
> User-Agent: Python-urllib/1.17
>
> HTTP/1.1 200 OK
> Date: Tue, 03 Mar 2009 18:52:15 GMT
> Server: Apache/2.0.52 (Red Hat)
> Last-Modified: Tue, 03 Mar 2009 16:52:22 GMT
> ETag: "13f7c12-14a-46439c2441d80"
> Accept-Ranges: bytes
> Content-Length: 330
> Connection: close
> Content-Type: text/plain; charset=UTF-8
>
> FPUS42 KRAH 031648
>
> City Forecast for Raleigh Durham, NC
> Issued Tuesday afternoon - Mar 3, 2009
>
> .Tuesday night... Low 33, 0% chance of precipitation.
> .Wednesday... Sunny, high 13, 0% chance of precipitation.
> .Wednesday night... Low 45, 0% chance of precipitation.
> .Thursday... Partly cloudy, high 27.
> .Thursday night... Low 59.
> ---
> The text starting with "City Forecast" was output verbatim, except for the
> blank line. The current conditions, which include both °C and °F (but without
> the degree sign, even though the charset is UTF-8), are from
> http://weather.noaa.gov/pub/data/observations/metar/decoded/KRDU.TXT .
>
> I went to the site you mentioned and found the elevation given as 200 ft. It
> is 200 m, which I pointed out to the webmaster.
>
> Pierre
>
>
>
>
--
James R. Frysinger
632 Stony Point Mountain Road
Doyle, TN 38559-3030
(C) 931.212.0267
(H) 931.657.3107
(F) 931.657.3108
