National Weather Service United States Department of Commerce

Massive Heat Wave; Severe Storms and Heavy Rain

A massive heat wave is consuming much of the Midwest into the Southern tier of the U.S. with hazy, hot and humid conditions. These dangerous conditions will likely persist through Thursday as widespread excessive heat warnings and heat advisories are in effect. North and east of the heat and area of high pressure, thunderstorms with damaging and severe winds, large hail and heavy rain are likely. Read More >

WMO RA-IV Regional Telecommunication
Product Collection and Dissemination
For Network (RMTN) Systems


NWS eMail Data Input System (EDIS) - Operational


The NWS eMail Data Input System (EDIS) is a procedure that allows designated meteorological data providers the capability to input weather bulletins to the National Weather Service Telecommunication Gateway (NWSTG) - also known as the Regional Telecommunication Hub (RTH), via eMail. Additional information on EDIS and how to obtain access to EDIS can found at


ISCS FTP Service (SSL VPN) - Operational


The ISCS Program Office has initiated a new service for transmitting meteorological data to the RTH-Washington as a replacement for the NWSTG FTP service on ISCS. The new service employs SSL VPN technology to allow computers at RA-IV National and Regional Centers to securely transmit files to the RTH using traditional File Transfer Protocol (FTP).


Collection Links


NWS eMail Data Input System (EDIS)
Emergency Managers Weather Information Network (EMWIN)


New ISCS File Transfer Service (FTPS)


The ISCS Program Office, in support of the international community of RA-IV Member States and other associated users, has initiated a new service for transmitting meteorological data to the Regional Telecommunications Hub (RTH)-Washington. The new FTPS adds support for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) cryptographic protocols that provides the added security. Member States may continue to use the RTH-Washington Email Data Ingest System (EDIS) as a backup service.

RTH-Washington will provide to Member States, at no cost, client software required for the transmission interface to the RTH FTPS server. Member States will have responsibility for all costs associated with maintaining a local Internet service to permit the FTPS connection.