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TECHNICAL IMPLEMENTATION NOTICE 05-56...AMENDED
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
800 AM EDT WED OCTOBER 5 2005

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... NWS EMPLOYEES

FROM:	  PAUL HIRSCHBERG
	  CHIEF... SCIENCE PLANS BRANCH
	  OFFICE OF SCIENCE AND TECHNOLOGY /OST/

SUBJECT:  AMENDED: ADDITION OF NEW GFS-BASED GRIDDED MOS 
          GUIDANCE: EFFECTIVE DATE OF NOVEMBER 29 2005 
          POSTPONED

REFER TO: TECHNICAL IMPLEMETATION NOTICE /TIN/ 05-56
 	  TRANSMITTED ON JULY 22 2005

AMENDED TO POSTPONE EFFECTIVE DATE FOR ADDING GFS-BASED GRIDDED
MOS GUIDANCE FROM NOVEMBER 29 2005 UNTIL FURTHER NOTICE DUE TO
TELECOMMUNICATIONS OPERATION CENTER MORATORIUM ON SYSTEM
CHANGES. A FOLLOW-UP TIN WILL BE ISSUED WHEN A NEW IMPLEMENTATION
DATE IS SET. NOTE THAT EXPERIMENTAL DATA FOR SOME PRODUCTS IS
CURRENTLY AVAILABLE ON THE NWS FTP SERVER AS DESCRIBED BELOW.

ATTENTION USERS OF THE MODEL OUTPUT STATISTICS /MOS/ GUIDANCE:

THE NWS WILL PRODUCE NEW GLOBAL FORECAST SYSTEM /GFS/ -BASED 
GRIDDED MOS GUIDANCE AND DISSEMINATE IT ON THE SATELLITE 
BROADCAST NETWORK /SBN/... NOAAPORT... AND THE NWS FTP SERVER.  
THESE GUIDANCE PRODUCTS WILL BE IN GRIB2 FORMAT. THE NEW 
COMMUNICATION IDENTIFIERS FOR THESE PRODUCTS ARE SHOWN IN TABLE 1 
BELOW.  THE GRIDDED MOS PRODUCTS WILL CONTAIN GUIDANCE ON THE 5 
KM NATIONAL DIGITAL FORECAST DATABASE /NDFD/ CONUS GRID FOR 
SELECTED ELEMENTS AT PROJECTIONS OF 1 TO 7 DAYS IN ADVANCE.  
GRIDS WILL BE GENERATED FROM THE 0000 AND 1200 UNIVERSAL 
COORDINATED TIME /UTC/ MODEL RUNS. GUIDANCE WILL BE AVAILABLE FOR 
THE FOLLOWING ELEMENTS WITH OTHERS TO BE ADDED AT A LATER DATE:

  DAYTIME MAXIMUM AND NIGHTTIME MINIMUM TEMPERATURE
  2-METER SPOT TEMPERATURE
  2-METER SPOT DEWPOINT TEMPERATURE
  RELATIVE HUMIDITY
  WIND SPEED
  WIND DIRECTION
  PROBABILITY OF PRECIPITATION /6 AND 12 HOUR/
  PROBABILITY OF THUNDERSTORMS /3... 6 AND 12 HOUR/
  24-HOUR SNOWFALL AMOUNT

A WEB PAGE PROVIDING MORE INFORMATION REGARDING PROJECTIONS AND 
ELEMENTS FOR WHICH GUIDANCE IS AVAILABLE IS REFERENCED BELOW.  

INITIALLY ONLY THE WESTERN THIRD OF THE NDFD GRID WILL BE 
POPULATED WITH GUIDANCE.  THE OTHER TWO-THIRDS OF THE GRID WILL 
CONTAIN MISSING VALUES.  NWS WILL FILL IN THE REMAINDER OF THE 
GRID AS THE GUIDANCE BECOMES AVAILABLE.

EXPERIMENTAL GRIB2 PRODUCTS FOR SOME ELEMENTS ARE AVAILABLE ON 
THE NWS FTP SERVER AT /USE LOWER CASE LETTERS EXCEPT FOR 
SL...ST...DF...DC...GT...AND AR/:

FTP://TGFTP.NWS.NOAA.GOV/SL.US008001/ST.EXPR/DF.GR2/DC.NDGD/GT.MO
SGFS/AR.CONUS

TABLE 1: COMMUNICATION IDENTIFIERS FOR THE GFS-BASED GRIDDED MOS 
GRIB2 PRODUCTS.  EACH GRIB2 PRODUCT HAS A UNIQUE WMO HEADER.  
LISTED BELOW ARE REPRESENTATIONS OF THE WMO HEADERS.  A COMPLETE 
LIST OF GRIDDED MOS WMO HEADERS IS AVAILABLE AT /USE LOWER CASE 
LETTERS/:

  HTTP://WWW.NWS.NOAA.GOV/MDL/SYNOP/GMOS/GMOSHEADERS.PDF

WMO HEADING     ELEMENT

LBUXXX KWBQ     WIND DIRECTION
LCUXXX KWBQ	WIND SPEED
LDUXXX KWBQ	12-HR PROBABILITY OF PRECIPITATION
LEUXXX KWBQ	2-METER TEMPERATURE
LFUXXX KWBQ	2-METER DEW POINT TEMPERATURE
LGUXXX KWBQ	DAYTIME MAXIMUM TEMPERATURE
LHUXXX KWBQ	NIGHTTIME MINIMUM TEMPERATURE
LJUXXX KWBQ	6-HR PROBABILITY OF THUNDERSTORMS
LRUXXX KWBQ	RELATIVE HUMIDITY
LSUXXX KWBQ	24-HR SNOWFALL AMOUNT
LUUXXX KWBQ	6-HR PROBABILITY OF PRECIPITATION
LXUXXX KWBQ	12-HR PROBABILITY OF THUNDERSTORMS
LYUXXX KWBQ	3-HR PROBABILITY OF THUNDERSTORMS     

A WEB PAGE OUTLINING THE GRIDDED MOS GUIDANCE AND THE FTP SERVER 
STRUCTURE CAN BE FOUND ONLINE AT /USE LOWER CASE LETTERS/:

	HTTP://WWW.NWS.NOAA.GOV/MDL/SYNOP/GMOS.HTML

IF YOU HAVE QUESTIONS ABOUT THESE PRODUCTS OR THE MOS GUIDANCE... 
PLEASE CONTACT:

PAUL DALLAVALLE
MDL/SILVER SPRING MARYLAND
PHONE:  301-713-0023 EXT. 135
E-MAIL: PAUL.DALLAVALLE@NOAA.GOV

LINKS TO THE MOS PRODUCTS... ALONG WITH DESCRIPTIONS... CAN BE 
FOUND AT /USE LOWER CASE LETTERS/...

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

THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE AVAILABLE 
ON THE INTERNET AT THE /USE LOWER CASE LETTERS/... 

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

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