NOUS41 KWBC 181325



Service Change Notice 17-50

National Weather Service Headquarters Silver Spring MD

925 AM EDT Tue Apr 18 2017     


To:      Subscribers:

         -NOAA Weather Wire Service

         -Emergency Managers Weather Information Network


         Other NWS partners, users and employees


From:    Allison Allen

         Chief, Marine, Tropical, and Tsunami Services



Subject: Use of Mixed-Case Text/95 ASCII Character Set 

         in selected marine text products effective 

         June 1, 2017


Effective Thursday June 1, 2017, NWS will transition the

following marine (coastal and Great Lakes) text products issued

by Weather Forecast Offices (WFO), NCEP National Hurricane

Center (NHC) and the Ocean Prediction Center (OPC) from all

capital letters to a mixed-case text format/expanded 95 ASCII

character set:


Product Name                            AWIPS ID*

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

Coastal Waters Forecast                 CWFXXX

Great Lakes Open Lake Forecast          GLFXXX

Great Lakes Nearshore Marine Forecast   NSHXXX

Surf Zone Forecast                      SRFXXX

Other Marine Reports                    OMRXXX

Offshore Marine Forecast                OFFXXX

NAVTEX Marine Forecast                  NAVXXX

Collaborative Nearshore Swell and       SRDHFO

  Wind Forecast for Oahu                                       

Generalized Statewide Coastal Waters    CWFHI1   

  Forecast for Hawaii


* XXX is the WFO or Center Three-Letter ID


Examples of marine text products in mixed case are online at:


All of the sample products are shown for sample formatting

purposes only and have not been issued.  If weather conditions

prevent any WFO or Center from making this change on June 1,

2017, the change to the mixed-case text format will occur on the

next suitable day.


This roll-out of the mixed-case text format for marine products

was preceded by the Marine Interpretation Message (MIM), issued

by the Centers on November 30, 2016.  See SCN 16-46 posted at


NWS will notify partners/users of future product implementations

via Service Change Notices (SCN) with at least 30 days lead

time.  These notices will include AWIPS product identifiers and

actual effective dates.


Partners and users of NWS text products should modify their

systems to accommodate mixed case and the expanded character

set.  This change will make text products easier to read and

allow users to click on links directly rather than requiring

conversion to lowercase or mixed case.


If you have questions, please contact:


Mike Dion

NWS Digital and Graphical Support Branch

Silver Spring, MD  20910


Ashley Kells

NWS Central Processing

Silver Spring, MD  20910


Richard May

Marine, Tropical, and Tsunami Services Branch

Silver Spring, MD 20910


National Service Change Notices are online at: