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    EDIS Registration Form:

    The RTH-Washington Email Data Input System (EDIS) is being upgraded for improved efficiency and to enhance security. The current EDIS system and all current EDIS user accounts will cease operation on 01 October 2016. All current EDIS account holders/users should re-register as soon as possible to create their new EDIS user account. Further information on the transition and use of the new EDIS will be published in a Service Change Notice on or about 01 September 2016.

    Please fill out the EDIS Registration Form

    EDIS User Guide


The US National Weather Service "International Services and Communication Systems" (ISCS) activity is a collective group of message dissemination systems used to provide weather, water and climate information to segments of the World Meteorological Organization (WMO) International community as described in WMO document No. 386 - Manual on the Global Telecommunication System. The ISCS systems provide service to WMO Regional Association IV (RA-IV) and are managed by the US National Weather Service (NWS) Dissemination Systems Branch (W/OPS17); they include:

  • GTS Internet File Service (GIFS)
  • GeoNetCast - Americas (GNC-A)
  • Emergency Managers Weather Information Network (EMWIN)

ISCS systems are an integral part of the RA-IV Regional Meteorological Telecommunications Network (RMTN), which focuses on the timely collection and delivery of both time-critical and routine watches, warnings, observations and forecasts.

Additional telecommunication systems are identified as part of the RA-IV RMTN which supplement the capabilities of the ISCS systems for the exchange of messages. These other systems include:

  • NWSTG FTPS Ingest Server [RTH Washington System]
  • Email Data Input Service (EDIS) [RTH Washington System]
  • WAFS Internet File Service (WIFS) receive service [WAFC Washington System (FAA/ICAO)]

ISCS Notification



Addition of DOD Upper Air observation to SBN/NOAAPORT, since bulletin is already received at NWSTG/TOC.

8/17/2017 ISCS-0155

Add Climate Based Products in NWS Southern Region, EMWIN

8/09/2017 ISCS-0154

Global Forecast Systems (GFS) Upgrade per SCN 17-67



NHC Products Termination per SCN 17-47 - EMWIN



Soliciting comments on the proposed transition of the NWS EMWIN FTP service through September 15, 2017



EMWIN GOES-East satellite broadcast signal and file format changes effective November 2017



KNHC responsibility for METAREA XVI product change from primary to backup - EMWIN GIFS GNC-A



Cessation of U.S. METAR and TAF collectives per SCN 17-44 (Addendum)



Cessation of U.S. METAR and TAF collectives per SCN 17-44



Add Regional Weather Roundup (RWR) product for WFO Austin, San Antonio, Lubbock and Dallas Ft. Worth - EMWIN

ISCS Network

SSL-VPN Email Data Input Service (EDIS) Aviation Weather (WIFS) GeoNetCast Americas (GNC-A) EMWIN Antigua Bahamas Barbados Belize Costa Rica Curacao El Salvador Jamaica St. Lucia Trinidad GTS Internet File Service (GIFS) AWC Kansas City Guyana