National Weather Service United States Department of Commerce

Storm System Continues To Impact Southern California, Severe Weather Threatens The Southern And Eastern U.S.

A storm system will deliver heavy mountain snow and rainfall to southern California and the Desert Southwest through late week. The heavy rainfall may pose a flash flood risk, especially to burn scar locations. Severe thunderstorms capable of damaging winds, hail, and tornadoes will be possible from the Southern Plains to the Mississippi Valley, Mid South, and Mid Atlantic through Wednesday. Read More >


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


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



Add climate products for Nogales (OLS) and Safford (SAD), AZ


Changes to NWS Senior Duty Meteorologist Administrative Message Product Headers


New Climate Products from the Baltimore/Washington WFO (LWX) for the United States Naval Academy in Annapolis, MD (KNAK)


01/22/2020 ISCS-0202 

Creation of Additional Climate Based Products for WFO New Orleans (KLIX)
01/22/2020 ISCS-0201 

Creation of Additional Climate Based Products for WFO Austin/San Antonio (EWX) and WFO Houston (HGX) in the NWS Southern Region

Enterprise EMWIN Services Image and Image Archive File Availability Issues.

Read more here.



Creation of Additional Climate Based Products for WFO Jacksonville, FL (KJAX) in NWS Southern Region



Creation of Additional Climate Based Products for WFO Melbourne, FL (MLB) in NWS Southern Region



Add WFO Louisville (KLMK) Kentucky State AIR QUALITY ADVISORY product (AQAKY) - EMWIN



Replace Cayman Islands Surface BUFR Product with Upper Air Product


The NWS Legacy EMWIN services will terminate effective 1700Z  December 2, 2019.  

Read More Here:

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