A collective group of message dissemination systems used to provide weather, water and climate information to the United States and segments of the World Meteorological Organization (WMO) International community. Systems include: 

• GeoNetCast - Americas (GNC-A) - Satellite Broadcast

• GTS Internet File Service (GIFS) - GNC-A satellite broadcast product access via public Internet.

• Emergency Managers Weather Information Network (EMWIN) -  While functionally grouped as part of the NWS International Services and Dissemination Systems, EMWIN information is presented separately.  Click on the title link to transfer to the EMWIN Service web page

• GIFS: GTS Internet File Service (GIFS) requires a computer with access to the public Internet.
   

• GNC-A: GeoNetCast - Americas

  • User receiver stations

  • ​GEONETCast Americas (GNC-A) Guide: Equipment Specification, Component Identification and Selection Discussion
     

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• GNC-A Datacast Software
  Kencast Fazzt Professional Client
  
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• GNC-A and GIFS: WMO Standard alpha-numeric text, BUFR, GRIB, T4-FAX, and *.png/*.jpg/*.gif  for imagery/graphic pictures, .bin for encapsulated imagery/graphics pictures.
  
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• The GNC-A Satellite Broadcast:  is monitored 24x7 by NESDIS for broadcast quality and availability of channel content.  The NWS audits the data stream content on each of the NWS "ISCS-xxxxxxx" channels for consistency with the service's product baseline listing described in the ISCS product baseline and the NESDIS GNCA Product Catalog
   
• The GIFS file service: is monitored 24x7 by the NWS NOAA Central Operations (NCO).  The NWS audits the data content posting the file server monthly for consistency with the service's product listing described in the ISCS product baseline.
  
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• GTS Internet File Service (GIFS)
   
• GEONETCast Americas (GNC-A) satellite broadcast is a public broadcast but requires satellite station equipment and software.  Refer to About Receiver Stations  for further information, NESDIS GNCA Product Catalog
  
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• GEONETCast Americas (GNC-A)
  • Guide: Equipment Specification, Component Identification and Selection Discussion
     
  • Links to Spanish and Portuguese publications available here.
     
  • What Do I Need To Receive Satellite Data With GNC-A
     
  • GEONETCast-Americas Illustrated Product List
     
  • GEONETCast-Americas satellite footprint/map
• Data Review Group
   
• WMO Message Management (White Paper)
   
• GIFS Open Access RMTN Users Guide
   
• ISCS GRIB2 Product Headers (6/16/2017) Download File
   
• Blank NWS Request for Change Document Download File
   
• FCC 3.7-4.2 GHz Band Receive Station Registration Process Download File
  
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• GEONETCast Americas (GNC-A): Channel:  ISCS-WARN
   
• GTS Internet File Server: Folder: WARN
  
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• Users may interface their receiving systems with separate commercial or user-developed applications and devices to address their specific special needs.
  
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• The status of the GNC-A broadcast and GIFS services is updated manually during normal business hours on the Home Page.
   

• Service issues impacting user operations should be reported immediately to:

        Tech Control:  Phone:  301-683-1518

                                - or -

                                eMail:  SDM@noaa.gov   ... and cc:

                                            iscs.dm@noaa.gov
   

• Questions regarding the broadcast products, adding or replacing broadcast products or broadcast product format should be addressed to: 

                                           iscs.dm@noaa.gov
  
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