NOUS41 KWBC 151305



Service Change Notice 17-73

National Weather Service Headquarters Silver Spring, MD

905 AM EDT Thu Jun 15 2017


To:      Subscribers:

         -NOAA Weather Wire Service

         -Emergency Managers Weather Information Network


         Other NWS Partners and NWS Employees


From:    Joseph Pica

         Director, NWS Office of Observations


Subject: Add Geostationary Operational Environmental

         Satellite–16 (GOES-16) Level 2 Derived Products

         to the Satellite Broadcast Network (SBN or

         NOAAPORT), effective June 14, 2017


Effective on or after 15 UTC Wednesday, June 14, 2017,

additional GOES-16 Level 2 Derived Products will be added to the

SBN (also known as NOAAPORT). These products are based on the

GOES-16 Advanced Baseline Imager (ABI). The SBN feed of these

GOES-16 products will be in a pre-operational validation and

testing phase through at least November 2017. 


NOAA's GOES-16 satellite has not been declared operational and

its data are preliminary and undergoing testing. Users receiving

these data through any dissemination means assume all risk

related to their use of GOES-16 data and NOAA disclaims any and

all warranties, whether express or implied, including (without

limitation) any implied warranties of merchantability or fitness

for a particular purpose. These products are being added to

enable the testing of networks and systems with actual GOES-16

data, and so that users will be able to evaluate the products

during this validation/test period. 


It is not recommended that these preliminary products be used in

operational forecast processes, especially during the initial

months of this validation/test period. Any downstream postings

of these data should clearly convey their preliminary, non-

operational and in-testing nature. Furthermore, this data stream

may be subject to temporary unannounced data outages and

modifications during this validation and testing period.  One or

more follow-on notices will provide information on the progress

and conclusion of the validation period.


Refer to Service Change Notice 17-61 which introduced a

different set of GOES-16 derived products to the SBN:


Those derived products will continue to flow as the new Level 2

derived products described herein are added to the network.    


The new GOES-16 level 2 derived products, the first 11

characters of their WMO headers and their geographical regions

of coverage are as follows:


 GOES-16 Product                   WMO Header    Regions

 ---------------                   ----------    -------

 Cloud Optical Depth               IXTY01 KNES   F,C

 Cloud Particle Size Distribution  IXTW01 KNES   F,C,M

 Derived Motion Winds              IXTU99 KNES   F,C,M


Notes on table, above:

1. Region codes refer to GOES-16 geographical sectors, where F

refers to ABI Full Disk, C refers to ABI CONUS, and M refers to

ABI mesoscale.


2. KNES signifies that NOAA/NESDIS originated the products. 


Approximate hourly product counts and hourly volumes for the new

GOES-16 level 2 derived products are as follows:


 GOES-16 Product            Hourly Count    Hourly Volume

 ---------------            -------------   -------------

 Cloud Optical Depth        24/hour         144 MBytes/hour

 Cloud Particle Size Dist.  136/hour        360 MBytes/hour

 Derived Motion Winds       168/hour        400 Mbytes/hour


Product counts and volumes will vary due to ABI mode changes,

diurnal variations, file-compression variability, and other



For the foreseeable future, the SBN’s Experimental channel 

(PID 106) will be used to disseminate these GOES-16 Level 2

derived products; however, NWS anticipates the SBN suite of

GOES-16 products described here will evolve. Several of these

products are likely to be discontinued after an evaluation

period. Other products eventually will be moved to other SBN

channels and possibly modified.  Additional GOES-16 products are

planned for addition to the SBN during July 2017. Future service

change notices will describe these changes in advance.


The file format for these products is netCDF4.


GOES-16 remains stationed over its 89.5 degrees west longitude

station. From this location, it is undergoing checkout and

validation. GOES-16 will be moved to the GOES-East position at

75 degrees west longitude, once it is declared operational in

November 2017. 


Additional information about the flow of GOES-16 products on the

SBN has been posted at the following web site and will be

periodically updated:


Critical weather or other factors could delay the activation of

these products on the SBN. 


For questions pertaining to this change or upcoming plans for

the addition of GOES-16 products onto NOAAPORT, please contact:


     Brian Gockel

     NOAA/NWS Office of Observations

     Surface and Upper Air Division, Services Branch

     Silver Spring, MD 20910



     AWIPS Network Control Facility (NCF) Help Desk

     NOAA/NWS Office of Central Processing

     Silver Spring, MD 20910



For questions regarding the scientific or technical content of

the NOAAPORT-disseminated GOES-16 products please contact:


     Environmental Satellite Processing Center (ESPC) Help Desk

     Suitland, Maryland 20746

     Phone: 301-817-3880



National Service Change Notices are online at: