20070723: oceanic signmets

[Linda Miller]

NOUS41 KWBC 201330
PNSWSH

SERVICE CHANGE NOTICE 07-48
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
930 AM EDT FRI JUL 20 2007

TO:       NATIONAL WEATHER SERVICE /NWS/ OFFICES
          FEDERAL AVIATION ADMINISTRATION /FAA/ CUSTOMERS
          FAMILY OF SERVICES /FOS/ SUBSCRIBERS
          OTHER CUSTOMERS OF NWS AVIATION FORECASTS

FROM:     KEVIN L. JOHNSTON
          AVIATION SERVICES BRANCH CHIEF
     
SUBJECT:  FORMAT CHANGE FOR OCEANIC SIGMETS ISSUED BY THE
          AVIATION WEATHER CENTER /AWC/: EFFECTIVE NOVEMBER 7 
          2007
               
NOTE:     THE FOLLOWING CHANGES HAVE NO IMPACT ON NOAA WEATHER
          WIRE SERVICE SUBSCRIBERS

EFFECTIVE NOVEMBER 7 2007 AT 0000 UNIVERSAL COORDINATED TIME 
/UTC/ THE AWC WILL BEGIN ISSUING SIGMETS FOR OCEANIC FLIGHT 
INFORMATION REGIONS USING A NEW FORMAT FOR LATITUDE AND LONGITUDE 
VALUES. THE CHANGE IS SUMMARIZED AS FOLLOWS.

1. THE HEMISPHERIC DESIGNATION FOR LATITUDE /N OR S/ AND 
LONGITUDE /W OR E/ WILL BE SHIFTED TO THE LEFT OF THE NUMERIC 
VALUE.

2. THE NUMERIC VALUE WILL CONTAIN TWO DIGITS FOR WHOLE DEGREES OF 
LATITUDE AND THREE DIGITS FOR WHOLE DEGREES OF LONGITUDE FOLLOWED 
BY TWO DIGITS FOR MINUTES OF LATITUDE OR LONGITUDE.

3. A SPACE-HYPHEN-SPACE WILL BE INSERTED BETWEEN SUCCESSIVE 
LATITUDE AND LONGITUDE POINTS DELINEATING AN AREA.

AN EXAMPLE OF THE NEW FORMAT IS AS FOLLOWS:

    N4830 W15500 – N4530 W15030 – N4330 W16000 – N4830 15500

THIS FORMAT CHANGE WILL BE IMPLEMENTED TO BRING THE OCEANIC 
SIGMETS ISSUED BY THE AWC INTO COMPLIANCE WITH INTERNATIONAL 
STANDARDS AND RECOMMENDED PRACTICES.

THE FOLLOWING OCEANIC SIGMETS WILL BE AFFECTED BY THIS CHANGE.

    WMO HEADING     WMO HEADING

    WCPN01 KKCI     WCNT01 KKCI
    WCPN02 KKCI     WCNT02 KKCI
    WCPN03 KKCI     WCNT03 KKCI
    WCPN04 KKCI     WCNT04 KKCI
    WCPN05 KKCI     WCNT05 KKCI
    WCPN06 KKCI     WCNT06 KKCI
    WCPN07 KKCI     WCNT07 KKCI
    WCPN08 KKCI     WCNT08 KKCI
    WCPN09 KKCI     WCNT09 KKCI
    WCPN10 KKCI     WCNT10 KKCI
    WCPN11 KKCI     WCNT11 KKCI
    WCPN12 KKCI     WCNT12 KKCI
    WCPN13 KKCI     WCNT13 KKCI

    WSPN01 KKCI     WSNT01 KKCI
    WSPN02 KKCI     WSNT02 KKCI
    WSPN03 KKCI     WSNT03 KKCI
    WSPN04 KKCI     WSNT04 KKCI
    WSPN05 KKCI     WSNT05 KKCI
    WSPN06 KKCI     WSNT06 KKCI
    WSPN07 KKCI     WSNT07 KKCI
    WSPN08 KKCI     WSNT08 KKCI
    WSPN09 KKCI     WSNT09 KKCI
    WSPN10 KKCI     WSNT10 KKCI
    WSPN11 KKCI     WSNT11 KKCI
    WSPN12 KKCI     WSNT12 KKCI
    WSPN13 KKCI     WSNT13 KKCI

    WVPN01 KKCI     WVNT01 KKCI
    WVPN02 KKCI     WVNT02 KKCI
    WVPN03 KKCI     WVNT03 KKCI
    WVPN04 KKCI     WVNT04 KKCI
    WVPN05 KKCI     WVNT05 KKCI
    WVPN06 KKCI     WVNT06 KKCI
    WVPN07 KKCI     WVNT07 KKCI
    WVPN08 KKCI     WVNT08 KKCI
    WVPN09 KKCI     WVNT09 KKCI
    WVPN10 KKCI     WVNT10 KKCI
    WVPN11 KKCI     WVNT11 KKCI
    WVPN12 KKCI     WVNT12 KKCI
    WVPN13 KKCI     WVNT13 KKCI

ALTHOUGH THIS NOTICE IS LESS THAN THE 120 DAYS AS SPECIFIED BY 
NWSI 10-1805...THE NEW FORMAT FOR OCEANIC SIGMETS WAS REQUESTED 
THROUGH THE FAA AND HAS BEEN CLOSELY COORDINATED WITH THAT AGENCY 
TO BE EFFECTIVE ON NOVEMBER 7 2007.

IF YOU HAVE ANY QUESTIONS...PLEASE CONTACT:

     LARRY BURCH
     DEPUTY DIRECTOR
     AVIATION WEATHER CENTER 
     7220 NW 101ST TERRACE
     KANSAS CITY MISSOURI 64153
     PHONE:  816-584-7203
     EMAIL: LARRY.BURCH at NOAA.GOV

THIS AND OTHER NWS SERVICE CHANGE NOTICES ARE AVAILABLE ONLINE 
AT /USE LOWER CASE LETTERS/:

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

$$


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