NOUS41 KWBC 271913

SERVICE CHANGE NOTICE 09-38 
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
310 PM EDT WED MAY 27 2009

TO       SUBSCRIBERS:
	 -FAMILY OF SERVICES
	 -NOAA WEATHER WIRE SERVICE
	 -EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
	 -NOAAPORT 
	 OTHER NWS PARTNERS...USERS AND EMPLOYEES

FROM     ROBERT BUNGE
         INTERNET DISSEMINATION OFFICE
         OFFICE OF THE CHIEF INFORMATION OFFICER
      
SUBJECT: NATIONAL DIGITAL FORECAST DATABASE /NDFD/ USER DEFINED
         GRIB2 FILES TO BE OFFICIAL EFFECTIVE JULY 1 2009

NDFD USER DEFINED GRIB2 ENCODED DATA FILES WILL BE OFFICIAL 
EFFECTIVE JULY 1 2009.  THIS SERVICE ALLOWS USERS OF NDFD GRIB2 
DATA SETS TO DEFINE A CUSTOM AREA FOR WHICH TO RECEIVE NDFD DATA 
AS A GRIB2 MESSAGE. THE REQUEST IS MADE IN THE FORM OF A HTTP 
REQUEST OVER THE INTERNET THAT CONTAINS THE INFORMATION USED TO 
CONSTRUCT THE GRIB2 MESSAGE.  

A SAMPLE REQUEST CAN BE FOUND AT /USE LOWERCASE EXCEPT 
NDFD_GRIB2D/:

HTTP://WWW.NWS.NOAA.GOV/MDL/NDFD_GRIB2DECODER/CUSTMGRD.PHP#INTRO

INFORMATION ON HOW TO DECODE AND SAMPLE COMPUTER CODE FOR 
ACCESSING GRIB2 DATA IS AVIALABLE INCLUDING GRIB2 DECODER 
PACKAGES /USE LOWERCASE EXCEPT NDFD_GRIB2D/

HTTP://WWW.NWS.NOAA.GOV/MDL/NDFD_GRIB2DECODER/

IF YOU HAVE ANY QUESTIONS OR COMMENTS...PLEASE CONTACT: 

  ROBERT BUNGE
  INTERNET DISSEMINATION OFFICER
  SILVER SPRING MARYLAND
  301-713-1381 EXT 140
  ROBERT.BUNGE@NOAA.GOV

NATIONAL SERVICE CHANGE NOTICES ARE ONLINE AT /USE LOWERCASE/:

  HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM

$$
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