NOUS41 KWBC 101215 AAC



Service Change Notice 17-21 Updated

National Ocean Service Silver Spring MD

Relayed by the National Weather Service

815 AM EDT Mon Apr 10 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: Updated: Modification of NOAA's nowCOAST map

         services to provide maps of NOAA/NESDIS Global Mosaic

         of Geostationary Satellite Imagery and mosaic of

         shortwave infrared imagery from NOAA GOES EAST and

         WEST effective April 17, 2017


Amended to change effective date to on or about April 17, 2017,

and remove Meteosat-7 from list of weather satellites whose

imagery is used in the generation of GMGSI


Users of the existing map service should update their

applications to use the new URL after the service becomes

available. The specific changes users need to make depend on the

type of protocol or endpoints used.


Effective Tuesday, April 17, 2017, NOAA's nowCOAST (trademarked)

( will provide users with access to

NOAA/NESDIS's Global Mosaic of Geostationary Satellite Imagery

(GMGSI) and GOES shortwave infrared imagery via nowCOAST's time-

enabled web mapping services. The new imagery will be available

on nowCOAST's map services via two protocols: GeoServices

Representational State Transfer (REST) map services and Open

Geospatial Consortium (OGC) compliant Web Map Services (WMS).


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 April 17. The specific changes users need to

make depend on the type of protocol or endpoints used.


Users of REST Map Service Endpoints:


The existing REST Map Service endpoint at the following URL:


After April 17, 2017, the link will be replaced with:



An HTTP Redirect will be implemented to reduce the immediate

impact of the changes to certain users of REST map service

endpoints; however, the change is expected to break client

applications that do not support HTTP Redirect usage. All users

are encouraged to switch to the new map service endpoint as soon

as possible following implementation. Users will be able to

continue using their existing layer identifiers to access the

GOES visible, water vapor, and longwave infrared imagery, but

will need to make further modifications to their applications if

they wish to display the new GOES shortwave infrared or GMGSI

imagery layers.


Users of WMS Endpoints:


The existing WMS endpoint at the following URL:


will be replaced, after April 17, with:



This change will cause disruption of service to any client

applications still connecting to the discontinued WMS endpoint

after implementation. 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 or

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.


Detailed Information about the new nowCOAST map service will be

found at



This URL will not be accessible until the new version is



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 will also now be

available.  The shortwave infrared imagery provides additional

cloud information as well as fog detection at night.  The GMGSI

has a spatial resolution of 8 km and is composed of imagery from

U.S. GOES, Meteosat-10, and Himawari-8 weather satellites. GMGSI will

be updated approximately every 3 hours in the nowCOAST map service and the

mosaic of GOES West and East shortwave infrared imagery will be updated

every 30 minutes to ensure the latest imagery are available to users as

soon as it becomes available from NESDIS.  Additional information about

the NESDIS GMGSI can be found at


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 NESDIS’ GMGSI please contact:


NESDIS Office of Satellite and Product Operations

Suitland, MD



National Ocean Service Change Notices are online at: