NOUS41 KWBC 031542 AAA
PNSWSH

TECHNICAL IMPLEMENTATION NOTICE 06-07...AMENDED
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
1035 AM EST FRI MAR 2 2006

TO:        FAMILY OF SERVICES /FOS/ SUBSCRIBERS...NOAA 
           WEATHER WIRE SERVICE /NWWS/ SUBSCRIBERS... 
           EMERGENCY MANAGERS WEATHER INFORMATION NETWORK 
           /EMWIN/ SUBSCRIBERS...NOAAPORT SUBSCRIBERS...
           OTHER NATIONAL WEATHER SERVICE /NWS/ CUSTOMERS   
           AND PARTNERS... AND NWS EMPLOYEES

FROM:      GLENN AUSTIN
           DIGITAL SERVICES TRANSITION MANAGER
           OFFICE OF CLIMATE...WATER...AND WEATHER SERVICES

SUBJECT:   AMENDED...NWS NATIONAL DIGITAL FORECAST DATABASE 
           NDFD IMPROVEMENTS: RELATIVE HUMIDITY AND APPARENT 
           TEMPERATURE ELEMENTS TO BECOME OPERATIONAL ON 
           MARCH 15 2006 /MARCH 16 LOCAL GUAM TIME/

REFER TO:  ORIGINAL TECHNICAL IMPLEMENTATION NOTICE 
           /TIN/ 06-07 SENT FEBRUARY 16 2006 ON THIS SAME 
           SUBJECT

AMENDED TO HIGHLIGHT MINOR EDITORIAL CORRECTIONS MADE ON THE 
WEB SITE...HTTP://WWW.WEATHER.GOV/NDFD/OPER_IMPLEM.HTM... 
WHICH PROVIDES IMPLEMENTATION DETAILS FOR FTP USERS OF THE 
NDFD DATA. THE THIRD PARAGRAPH BELOW DESCRIBES THE 
CORRECTIONS MADE ON THIS WEB PAGE. THE IMPLEMENTATION WILL 
PROCEED AS SCHEDULED UNLESS A CRITICAL WEATHER DAY IS IN 
EFFECT ON MARCH 15 2006.

ON MARCH 15 2006 AT 1400 UNIVERSAL COORDINATED TIME /UTC/...
/MARCH 16 AT MIDNIGHT LOCAL GUAM TIME/...THE APPARENT 
TEMPERATURE AND RELATIVE HUMIDITY EXPERIMENTAL FORECAST ELEMENTS 
IN THE NATIONAL DIGITAL FORECAST DATABASE /NDFD/ WILL BE 
UPGRADED TO OPERATIONAL STATUS.

THIS CHANGE AFFECTS USERS WHO PULL THESE ELEMENTS IN GRIDDED 
BINARY /GRIB2/ FORMAT FROM THE NWS FILE TRANSFER PROTOCOL /FTP/ 
SERVER...EITHER VIA THE INTERNET OR VIA THE FAMILY OF SERVICES 
SERVER ACCESS SERVICE. SPECIFIC INFORMATION FOR FTP USERS 
REGARDING THIS CHANGE IS AVAILABLE ONLINE AT /USE LOWER CASE 
LETTERS/:

     HTTP://WWW.WEATHER.GOV/NDFD/OPER_IMPLEM.HTM

ON FEBRUARY 28 2006...THE FOLLOWING CORRECTIONS WERE MADE ON THE 
WEB PAGE REFERRED TO ABOVE:

   - IN THE SECTION ENTITLED INSTRUCTIONS FOR FTP USERS...IN THE 
     FIRST SENTENCE... THE YEAR WAS CHANGED FROM 2005 TO 2006

   - IN THE SAME SECTION /INSTRUCTIONS FOR FTP USERS/...IN THE 
     TABLE OF ELEMENTS AND FILENAMES...THE FILENAMES HAD BEEN
     TRANSPOSED.  THESE ERRORS HAVE BEEN CORRECTED.  THE CORRECT 
     FILENAME FOR RELATIVE HUMIDITY IS DS.RHM.BIN AND THE 
     FILENAME FOR APPARENT TEMPERATURE IS DS.APT.BIN.

IF YOU HAVE QUESTIONS REGARDING THIS NOTICE...PLEASE CONTACT:

     CHRIS ALEX
     DIGITAL SERVICES
     NATIONAL WEATHER SERVICE
     OFFICE OF CLIMATE...WATER...AND WEATHER SERVICES
     1325 EAST WEST HIGHWAY
     SILVER SPRING MARYLAND 20910
     EMAIL:  CHRISTINE.ALEX@NOAA.GOV

IF YOU HAVE TECHNICAL QUESTIONS REGARDING THE NDFD DATA...PLEASE 
CONTACT:

     DAVID RUTH
     CHIEF...MESOSCALE PREDICTION BRANCH
     NATIONAL WEATHER SERVICE
     OFFICE OF SCIENCE AND TECHNOLOGY
     1325 EAST WEST HIGHWAY
     SILVER SPRING MARYLAND 20910
     EMAIL:  DAVID.RUTH@NOAA.GOV

THIS AND ALL OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE 
POSTED AT /USE LOWER CASE LETTERS/:

     HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM

$$
NNNN