NOUS41 KWBC 261137
Service Change Notice 17-06
National Ocean Service Office of Coast Survey Silver Spring MD
Relayed by the National Weather Service
737 AM EST Thu Jan 26 2017
-NOAA Weather Wire Service
-Emergency Managers Weather Information Network
-Other NWS and NOS Partners and NOAA Employees
From: Edward Myers
Chief, Coastal Marine Modeling Branch
Coast Survey Development Laboratory
NOS/Office of Coast Survey
Subject: Modification of NOAA's nowCOAST map services
effective February 28, 2017.
Effective Tuesday, February 28, 2017, NOAA's nowCOAST
(trademark) map services (https://nowcoast.noaa.gov) will
provide users with access to the NOAA/NESDIS Global Mosaic of
Geostationary Satellite Imagery (GMGSI) via nowCOAST's time-
enabled web mapping services.
The GMGSI includes visible, shortwave infrared and longwave
infrared imagery. The addition of the GMGSI will provide, for
the first time on nowCOAST, weather satellite coverage for U.S.
territories west of Hawaii. In addition, a mosaic of shortwave
infrared imagery from GOES WEST and EAST also will be available.
The shortwave infrared imagery provides additional cloud
information as well as fog detection at night. The new imagery
will be available via nowCOAST's map services via two protocols:
GeoServices Representational State Transfer (REST) map services
and Open Geospatial Consortium (OGC) compliant Web Map Services
(WMS). Users will be able to view the GMGSI and GOES shortwave
infrared imagery via the nowCOAST map viewer.
To properly reflect the addition of GMGSI to nowCOAST, the name
of the nowCOAST map service will change from
sat_meteo_imagery_goes_time to sat_meteo_imagery_time. Users of
the existing map service should update their applications to use
the new URL after the new service becomes available. The
specific changes users need to make depend on the type of
protocol or endpoints used.
Users of REST Map Service Endpoints
A HTTP redirect will be implemented to reduce the immediate
impact of the changes to users of REST map service endpoints.
Users will be able to continue using their layer identifiers to
access the GOES visible, water vapor and longwave infrared
imagery, but will need to modify their applications if they wish
to display the new GOES shortwave infrared or GMGSI imagery
Users of WMS Endpoints
Users of WMS endpoints will need to update their applications
according to the updated capabilities Extensible Markup Language
(XML) file obtained via a GetCapabilities request to continue
displaying GOES imagery and to add the new imagery if desired.
Additional information for users of WMS and REST map service
endpoint will be found at
The above nowCOAST URLs will not contain information about the
new imagery until the new version is implemented.
The GMGSI has a spatial resolution of 8 km and is composed of
imagery from U.S. GOES, Meteosat-7 and -10, and Himawari-8
weather satellites. GMGSI will be updated approximately every
3 hours in the nowCOAST map service. The mosaic of GOES West and
East shortwave infrared imagery will be updated every 30 minutes
to ensure the latest imagery is available to users as soon as it
becomes available from NESDIS. Additional information about the
NESDIS GMGSI can be found at
Once implemented, detailed information about the new nowCOAST
map service will be found at
Please note that this URL will not be accessible until the new
version is implemented.
nowCOAST provides coastal intelligence on present and future
environmental conditions for coastal and maritime users by
integrating data and information from across NOAA and other
federal and state agencies. nowCOAST was developed by
NOAA/National Ocean Service's Coast Survey Development
Laboratory, and is hosted on NOAA’s Integrated Dissemination
Program (IDP) infrastructure where it is monitored 24 x 7 by
NWS/NCEP Central Operations.
For questions concerning nowCOAST, please contact:
John G.W. Kelley
NOS Co-Project Manager
NWS Co-Project Manager
Silver Spring, MD
For questions concerning the NESDIS GMGSI, please contact:
NESDIS Office of Satellite and Product Operations
National Ocean Service Change Notices are online at: