[aprssig] US Weather forecast via APRS message

Max Harper kg4pid at yahoo.com
Fri Jan 22 12:11:06 EST 2016

I hope you make a version available to us dummies that runs on the raspberry pi. That would make a great addition for those of us who use them for igates.
Thanks for your hard work.

      From: Martin Nile via aprssig <aprssig at tapr.org>
 To: TAPR APRS Mailing List <aprssig at tapr.org> 
 Sent: Friday, January 22, 2016 10:38 AM
 Subject: Re: [aprssig] US Weather forecast via APRS message
Thanks Fred,
Once I get all of the kinks worked out of the program, I'll move it to a proper server and rename it to something more easily remembered.  I'm open to suggestions.  WXBOT, USAWX, FORCST, WXRPT and others have been suggested.
Looking at the messages that came in overnight, I realized that I can also give current conditions.  I'll be adding "now" and "current".  If the requested station is an APRS weather station, or a CWOP station I can return the most recent report from the station.  Otherwise, I'll use the report from the weather service.

On Fri, Jan 22, 2016 at 6:42 AM, Fred Hillhouse Jr <fmhillhouse at comcast.net> wrote:

Hi Martin, Very nice! Now to remember it exists andthat will be challenging! Will you be making your work available forothers to use? Thanks for your service! Best regards,Fred N7FMH  From: aprssig[mailto:aprssig-bounces at tapr.org] On BehalfOf Martin Nile via aprssig
Sent: Thursday, January 21, 20167:03 PM
To: aprssig at tapr.org
Subject: [aprssig] US Weatherforecast via APRS message I am in the process of working on a program which provides a US Weatherforecast via APRS message. I have most of the kinks worked out and it is readyfor testingby a larger group. Send a single character APRS message to KI6WJP and the program will respondwith a brief forecast for your location. You can specify "where" and "when" you want theforecast.  If you wish a full forecastadd the word "full" to your "where" and"when".  The full forecast is spread acrossmultiple APRS message.  The default "brief" forecastusually fits within a singlemessage. "where" is any APRS callsign/object, zipcode, grid, ordecimal lat/lon as long as it is located in a place covered by the US National Weather Service. "when" is any day of the week with optional night.  I.e.Wednesday night The forecast is derived from the US National Weather Service pointforecast.Usually the forecast is produced within 1 or 2 seconds, but duringperiods ofheavy activity, the weather service can take 20 or 30 seconds. The latitude/longitude for the requested object is extracted from api.aprs.fi,  As a result, anything that appears on aprs.fiis valid including CWOP stations and AIS ships. Here are some example forecast requests that can be sent to KI6WJP: Any message less than 3 characters    Returns a brief forecast for the current location of thesending station.Tomorrow 96067    Returns  tomorrow's forecast for Mount Shasta, CATonight    Returns the forecast for tonight at your current locationTuesday night full    Returns the Tuesday night full forecast at your currentlocation.w1aw    Returns the current forecast for the location of stationW1AWusna-1 Sunday    Returns the forecast for the Army Navy football game onSunday.     (Assuming usna-1 is at the stadium)CN81uh    Returns the forecast for the center of maidenhead gridCN81uh36.5786/-118.2920    Returns the forecast for the summit of Mount Whitney. Currently the program is running on a raspberry Pi on a home dslinternet connection.The program is single threaded and can handle a single forecast requestat a time.Things are still in development and may break at any time.   Obviously for this to work via RF, a transmit capable i-gate isnecessary. Many thanks to Heikki for Ham::APRS::IS, Ham::APRS::FAP and api.aprs.fi that madethis easy. For more information see: https://sites.google.com/site/ki6wjp/wxbot --RegardsMartin NileKI6WJP 

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