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


To:   Subscribers:

        -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 ( 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!section=wms-layer-ids




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


Durham, NH



Nipa Parikh

NWS Co-Project Manager


Silver Spring, MD



For questions concerning the NESDIS GMGSI, please contact:


NESDIS Office of Satellite and Product Operations

Suitland, MD



National Ocean Service Change Notices are online at: