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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


GOES-14 Emergency Managers Weather Information Network Broadcast Available on or before December 11, 2017.




Add Climate Products issued by WFO Morristown TN (MRX) - EMWIN



Add climate products for Ketchikan, Alaska (PAKT) - EMWIN



Termination of Regional Weather Summary product for Alaska (RWSAK) - EMWIN



Modify EMWIN broadcast product priorities to conform with WMO Pub 386 - EMWIN



AWIPS WMO headers for tropical products from select inland ER WFOs - EMWIN


DM04-18.02 EMWIN Service Disruption Commencing 0900 UTC, April 7, 2018

The US National Weather Service (NWS) Headquarters will perform urgent maintenance on electrical systems supporting the Emergency
Managers Weather Information Network (EMWIN) services commencing 0900 UTC, April 7, 2018.

Expected EMWIN service impacts:

A. FTP server - loss of service.
B. ByteBlaster servers - negligible impact.
C. GOES 14 or 15 EMWIN satellite broadcast - no impact.
D. GOES-16 HRIT-EMWIN satellite broadcast - no impact.

Date/Time of Initial Impact: April 7, 2018 0900 UTC

Date/Time of Expected End: April 9, 2018 1300 UTC


DM041801 (Correction) GOES-14/15 EMWIN Satellite Broadcast Disruption Commencing 1200 UTC, April 3, 2018
Effective: 2018/04/03 1200Z UTC

NOAA Wallops Command & Data Acquisition Station (WCDAS) Facility Power Outage

Length of Outage: 48 to 60 Hours

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