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-------- Original Message --------935 NOUS41 KWBC 231215
PNSWSH TECHNICAL IMPLEMENTATION NOTICE 06-72 NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC 810 AM EDT MON OCT 23 2006TO: 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@xxxxxxxx
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@xxxxxxxx
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@xxxxxxxx
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@xxxxxxxxxxxxxxxx Community Services, Unidata University Corporation for Atmospheric Research P.O. Box 3000 Boulder, CO 80307-3000303-497-8646 fax: 303-497-8690
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