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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
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