960608: Canadian implementation of METAR/TAF June 3, 1996 (fwd)

WSHPNSNMC
NOUS41 KWBC 311830

NATIONAL TECHNICAL INFORMATION MESSAGE (NTIM) 96-13
NATIONAL WEATHER SERVICE HEADQUARTERS
225 PM EDT FRI MAY 31 1996

TO:          USERS OF CANADIAN OBSERVATIONS AND AVIATION TERMINAL
             FORECASTS
             
FROM:        HOWARD J. DIAMOND
             NWS METAR/TAF IMPLEMENTATION MANAGER 

SUBJECT:     METAR/TAF PROJECT:  CANADIAN IMPLEMENTATION OF METAR
             AND TAF CODES EFFECTIVE MONDAY JUNE 3 1996 AT
             0600 UTC

REFERENCES:  AFOS CHANGE NOTICE 1208 A, B (CANADIAN METAR PILS)
             AFOS CHANGE NOTICE 1215 A, B, C (CANADIAN TAF PILS)
             GENOT NO. 29 (CANADIAN METARS)
             GENOT NO. 37 (CANADIAN TAFS)
             GENOT NO. 38 (CANADIAN TAFS)
             GENOT NO. 39 (CANADIAN TAFS)
             GENOT NO. 40 (CANADIAN TAFS)
             
AS A REMINDER...CANADA IS IMPLEMENTING THE INTERNATIONAL HOURLY
SURFACE OBSERVATION CODE (METAR) AND THE INTERNATIONAL AERODROME
(TERMINAL) FORECAST CODE (TAF) ON MONDAY JUNE 3 1996 AT 0600 UTC.

COINCIDENT WITH THE CANADIAN IMPLEMENTATION OF THE METAR/TAF
CODES...THE CANADIAN SURFACE OBSERVATIONS IN THE DOMESTIC CODE
(SA) AND CANADIAN TERMINAL FORECASTS IN THE DOMESTIC CODE (FT)
AND THE CORRESPONDING AFOS AND WMO IDENTIFIERS WILL BE
DISCONTINUED.

FOR AFOS USERS...THE INDIVIDUAL AFOS IDENTIFIERS FOR ALL THE
CANADIAN METAR OBSERVATIONS WERE PROVIDED IN A TWO-PART AFOS
CHANGE NOTICE NUMBER 1208 (PARTS A AND B)...WHICH WAS SENT ON MAY
28TH.  THE INDIVIDUAL AFOS IDENTIFIERS FOR THE 191 CANADIAN TAFS
ARE BEING PROVIDED TODAY IN A THREE-PART AFOS CHANGE NOTICE
NUMBER 1215 (PARTS A...B...AND C).  AFOS CHANGE NOTICES ARE SENT
UNDER AFOS IDENTIFIER CCCADADRG...WHERE "CCC" IS YOUR LOCAL NODE
ID.

FOR CUSTOMERS WHO RECEIVE THESE CANADIAN PRODUCTS IDENTIFIED BY
WORLD METEOROLOGICAL ORGANIZATION (WMO) HEADERS...THEY WERE
PROVIDED IN GENERAL NOTICES (GENOT) NUMBERED 29 AND 37-49.

THE WMO HEADERS FOR THE CANADIAN METAR PRODUCTS ARE:

     SACN40 CWAO         SACN48 CWAO         SACN74 CWAO
     SPCN40 CWAO         SPCN48 CWAO         SACN75 CWAO
     SACN41 CWAO         SACN49 CWAO         SACN78 CWAO
     SPCN41 CWAO         SPCN49 CWAO         SACN79 CWAO
     SACN42 CWAO         SACN52 CWAO         SACN82 CWAO
     SPCN42 CWAO         SPCN52 CWAO         SACN86 CWAO
     SACN43 CWAO         SACN70 CWAO         SACN91 CWAO
     SPCN43 CWAO         SACN71 CWAO         SACN98 CWAO
     SACN44 CWAO         SACN72 CWAO         
     SPCN44 CWAO         SACN73 CWAO

THE WMO HEADERS FOR THE CANADIAN TAFS ARE:

     FTCN31 CWAO         FCCN44 CWAO         FCCN51 CWAO
     FTCN32 CWAO         FCCN45 CWAO         FCCN52 CWAO
     FTCN33 CWAO         FCCN46 CWAO         FCCN53 CWAO
     FTCN34 CWAO         FCCN47 CWAO         FCCN54 CWAO
     FCCN41 CWAO         FCCN48 CWAO         FCCN55 CWAO
     FCCN42 CWAO         FCCN49 CWAO         FCCN56 CWAO
     FCCN43 CWAO         FCCN50 CWAO         FCCN57 CWAO

NOTE:  CANADA'S ATMOSPHERIC ENVIRONMENT SERVICE (CANADA'S
EQUIVALENT TO THE NWS) PREPARES TERMINAL FORECASTS COVERING TWO
DIFFERENT TIME FRAMES:  SOME TAFS ARE VALID FOR MORE THAN 12
HOURS (THOSE ARE SENT UNDER THE "FTCN" WMO HEADERS);  SOME TAFS
ARE VALID FOR 12 HOURS OR LESS (THOSE ARE SENT UNDER THE "FCCN"
WMO HEADERS).

FOR MORE INFORMATION ON THE CANADIAN IMPLEMENTATION OF THE
METAR/TAF CODES..REFER TO THE FOLLOWING HOME PAGE ON THE WORLD
WIDE WEB OF THE INTERNET:

     HTTP://WWW/ON.DOE.CA/AWPM/METAR/METHOM.HTM

AS A REMINDER...THE UNITED STATES WILL BE IMPLEMENTING A SIMILAR
THE CHANGE TO THE METAR AND TAF CODES ON MONDAY JULY 1 1996 AT
0800 UTC.

INFORMATION ON THE U.S. IMPLEMENTATION OF THE METAR AND TAF CODES
IS AVAILABLE ON THE WORLD WIDE WEB ON THE NATIONAL WEATHER
SERVICE'S METAR/TAF HOME PAGE AT THE FOLLOWING ADDRESS:

     HTTP://WWW.NWS.NOAA.GOV/OSO/OSO1/OSO12/METAR.HTM

IF YOU HAVE ANY QUESTIONS ABOUT THE CANADIAN OR THE NWS
METAR/TAF IMPLEMENTATION OR THE METAR/TAF PROJECT IN GENERAL
PLEASE CONTACT HOWARD DIAMOND NWS METAR/TAF IMPLEMENTATION
MANAGER VIA E-MAIL AT THE FOLLOWING ADDRESS:

     HDIAMOND@xxxxxxxxxxxxxxxxxxxxxx

END

------------------------------------------------------------------
    Chris Alex
    NWS - W/OM12
    calex@xxxxxxxxxxxxxxxxxxxxxx