NOUS41 KWBC 181341 AAC



Technical Implementation Notice 10-48, Amended

National Weather Service Headquarters Washington DC

841 AM EST Tue Jan 18 2011


To:       Subscribers:

          -Family of Services

          -NOAA Weather Wire Service

          -Emergency Managers Weather Information Network


          Other NWS Partners, Users and Employees


From:     Timothy McClung

          Chief, Science Plans Branch

          Office of Science and Technology


Subject:  Amended: Changes to NCEP BUFR Products:

          Effective Date January 25, 2011


Amended to announce the new implementation date.  Issues that arose during testing in December have been resolved. The implementation and associated BUFR format changes will take place on Tuesday, January 25, 2011.


The National Centers for Environmental Prediction (NCEP) will upgrade the software used to create model output products in BUFR format.  This upgrade will result in the following two changes to the format of all NCEP BUFR products:


1. The identification section of each BUFR message will

   indicate the use of Version 13 of the WMO Master Table.

   NCEP BUFR products currently use Version 12.


2. An additional empty (zero subset) BUFR message will now be

   included within all files that contain BUFR table
   messages.  These empty messages are recognizable as having
   a data category value of 11 within the identification  
   section of the message.


Note that this change does not affect Model Output Statistics (MOS) and Localized Aviation MOS Product(LAMP) products.


Sample NCEP BUFR products are available at:


The "current" directory contains the BUFR products created with the current operational BUFR software. The "new" directory contains the same products generated with the new BUFR software.


For questions regarding these changes, please contact:


Jeff Ator

NCEP/Central Operations

Camp Springs , Maryland

301-763-8000 x 7104


Rebecca Cosgrove

NCEP/Central Operations

Camp Springs , Maryland

301-763-8000 x 7198


NWS National Technical Implementation Notices are online at: