20061023: NDFD-Fwd: ADMIN NOTICE NOUS41 KWBC]

[Linda Miller]

-------- Original Message --------

935 
NOUS41 KWBC 231215
PNSWSH

TECHNICAL IMPLEMENTATION NOTICE 06-72
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
810 AM EDT MON OCT 23 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:   REMINDER: CHANGE IN TIME THE NWS NATIONAL DIGITAL 
           FORECAST DATABASE /NDFD/ IS EXTENDED BY 24 HOURS:
           EFFECTIVE NOVEMBER 28 2006

REFER TO:  TECHNICAL IMPLEMENTATION NOTICE /TIN/ 06-51
           SENT JULY 19 2006

THIS IS A REMINDER THAT ON NOVEMBER 28 2006...THE TIME THE NDFD 
IS EXTENDED BY 24 HOURS /ADDING A NEW DAY 7 FORECAST TO THE 
DATABASE...FOR EXAMPLE/ WILL CHANGE FROM 1800 COORDINATED 
UNIVERSAL TIME /UTC/ TO 2200 UTC. SHIFTING THE UPDATE TIME TO 
2200 UTC WILL ALLOW NWS FORECASTERS TO ASSIMILATE THE MOST 
RECENT FORECAST MODELS AND NATIONAL CENTERS GUIDANCE INTO THEIR 
FORECAST AND COLLABORATE MORE WITH NEIGHBORING NWS OFFICES.  THE 
RESULT WILL BE MORE ACCURATE AND COHERENT FORECASTS ACROSS THE 
COUNTRY AND IN NDFD. THIS WAS ORIGINALLY ANNOUNCED IN TIN 06-51:  

HTTP://WWW.WEATHER.GOV/OS/NOTIFICATION/TIN06-51NDFD.TXT. 

UPDATES TO NDFD GRIDDED BINARY /GRIB2/ FILES FOR DAYS 4 THROUGH 
7 ARE AVAILABLE ON THE ANONYMOUS FILE TRANSFER PROTOCOL /FTP/ 
SERVER AT 0000...0600...1200...AND 1800 UTC AT ABOUT H-15 
MINUTES.  STARTING ON NOVEMBER 28 2006 THESE FILES WILL ALSO BE 
UPDATED A FIFTH TIME AT 2200 UTC. DAYS 1 THROUGH 3 NDFD ELEMENT 
GRIB2 FILES WILL CONTINUE TO BE UPDATED HOURLY.  FOR EXAMPLE THE 
1800 UTC NDFD ELEMENT FILES FOR DAYS 4 THROUGH 7 ARE POSTED TO 
THE FTP SERVER ABOUT 1745 UTC.  THE DAYS 1 THROUGH 3 FILES ARE 
POSTED TO THE FTP SERVER NEAR 1800 UTC.  

THIS CHANGE AFFECTS USERS WHO PULL NDFD ELEMENT FILES FROM THE 
FTP SERVER AND USERS WHO ACCESS NDFD IN EXTENSIBLE MARKUP 
LANGUAGE /XML/ VIA THE XML WEB SERVICE.  BEGINNING NOVEMBER 28 
2006 THE NEW DAY 7 FORECAST FILES WILL BE ADDED TO THE NDFD AT 
2200 UTC RATHER THAN AT 1800 UTC AS THEY ARE CURRENTLY. FTP AND 
XML USERS MAY WANT TO PULL DATA FROM NDFD AT 2200 UTC STARTING 
ON OR AFTER NOVEMBER 28TH TO ENSURE THEY ARE GETTING THE NEW  
DAY 7 FORECAST DATA AS SOON AS IT IS AVAILABLE.

THERE ARE NO NEW WORLD METEOROLOGICAL ORGANIZATION /WMO/ 
HEADINGS ASSOCIATED WITH THIS CHANGE. HOWEVER USERS WHO KEY ON 
WMO HEADINGS WITHIN THE GRIDDED BINARY /GRIB2/ ELEMENT FILES 
MUST PROPERLY IDENTIFY HEADINGS ACCORDING TO FORECAST DAY.  
FOR EXAMPLE GRIDS DESIGNATED AS DAY 2 FORECASTS IN THE WMO 
HEADING WILL NOT CHANGE TO A DAY 1 DESIGNATION UNTIL 2200 UTC 
EACH DAY...STARTING ON NOVEMBER 28 2006.

NOTE: THIS CHANGE DOES NOT AFFECT USERS OF NDFD WEB GRAPHICS.

IF NOVEMBER 28 2006 IS A CRITICAL WEATHER DAY...THIS 
IMPLEMENTATION MAY BE POSTPONED.  USERS WILL BE NOTIFIED AS FAR 
IN ADVANCE AS POSSIBLE OF ANY DECISION TO DELAY IMPLEMENTATION.

USERS ARE ENCOURAGED TO PROVIDE FEEDBACK BY USING ONE OF THE 
BRIEF SURVEYS AVAILABLE ONLINE AT /USE LOWER CASE LETTERS/:
  
    FOR GRIB2 USERS: 
    HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=NDFD-GRIDS

    FOR USERS OF XML SOAP SERVICE:
    HTTP://WWW.WEATHER.GOV/SURVEY/NWS-SURVEY.PHP?CODE=XMLSOAP

FOR GENERAL QUESTIONS REGARDING THE NDFD...PLEASE EMAIL:

     NWS.NDFD at NOAA.GOV

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 at NOAA.GOV

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

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

$$


-- 
Linda Miller - lmiller at unidata.ucar.edu
Community Services, Unidata
University Corporation for Atmospheric Research
P.O. Box 3000
Boulder, CO 80307-3000
303-497-8646 fax: 303-497-8690 


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