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About HRIT/EMWIN


The NOAA/NESDIS High Rate Information Transmission / Emergency Managers Weather Information Network (HRIT/EMWIN) broadcast provides a GOES-R Series relay of reduced resolution imagery transformed into the HRIT/LRIT format along with the EMWIN product suite, a copy of the GOES Data Collection System (DCS) broadcast, and other hydrological/meteorological information. HRIT/EMWIN is a combined service that replaces the LRIT and EMWIN stand-alone services found on GOES 13, 14 and 15. To receive the data, users can purchase the necessary equipment (antenna, cabling, receiver, computer, and software) from commercial companies for unlimited access to the GOES-R Series signals. To review an architectural specification of the LRIT/HRIT mission from a telecommunications point of view, read “The Coordination Group for Meteorological Satellites LRIT/HRIT Global Specification”. The GOES-R Web Site provides program and technical information. Find further information on the GOES-R Series Advanced Baseline Imagery (ABI) and additional imagery information guides. There is no fee or license requirement required by NOAA to receive this data.


Transition of the legacy LRIT broadcast

The digital Low Rate Information Transmission (LRIT) is an international standard for data transmission that was developed by the Coordination Group for Meteorological Satellites (CGMS) in response to a recommendation on digital meteorological satellite broadcasts. NOAA designed its LRIT system based on the CGMS standard. The LRIT/HRIT Global Specification can be located within the World Meteorlogical Organizations (WMO) website. The NOAA LRIT system provides digital data, via a broadcast service, through its GOES 13, 14 and 15 geostationary satellites. The LRIT East Broadcast was discontinued when GOES-16 became the operational East satellite in December 2017 and the LRIT West Broadcast was discontinued in February 2019 when GOES-17 became the operational West satellite. The LRIT broadcast capability will be a backup service available from the GOES 13, 14 and 15 satellites until they are officially de-commissioned. NOAA uses its LRIT broadcast system to disseminate reduced resolution Geostationary Operational Environmental Satellite (GOES) data, GOES Data Collection System (DCS) observations, the National Weather Service’s Emergency Managers Weather Information Network (EMWIN) information, and other hydrological/meteorological products and imagery to users using the 1691 Megahertz GOES L band down-link frequency.