NOUS41 KWBC 181336
PNSWSH	
SERVICE CHANGE NOTICE 06-21
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
937 AM EDT THU MAY 18 2006

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:	    THERESE Z. PIERCE
	    CHIEF...MARINE AND COASTAL WEATHER SERVICES BRANCH  

SUBJECT:    CHANGE IN TIME FORMAT USED IN THE TROPICAL CYCLONE 
            FORECAST/ADVISORY /TCM/ AND THE AVIATION TROPICAL 
            CYCLONE ADVISORY /TCA/ PRODUCTS EFFECTIVE JUNE 29 2006 

EFFECTIVE JUNE 29 2006 AT 1400 COORDINATED UNIVERSAL TIME 
/UTC/...THE TIME FORMAT IN THE ISSUANCE DATE/TIME LINE OF THE TCM 
AND TCA MASS NEWS DISSEMINATOR /MND/ HEADER BLOCKS CHANGES FROM 
USING THE COORDINATED UNIVERSAL TIME /Z/ ABBREVIATION TO THE 
/UTC/ ABBREVIATION.  EXAMPLES OF THE OLD AND NEW PRODUCTS ARE 
BELOW.

THE NORMAL 75 DAY NOTIFICATION PERIOD ASSOCIATED WITH SERVICE 
CHANGE NOTICES INTRODUCING MINOR CHANGES TO PRODUCT FORMAT WAS 
WAIVED. SOFTWARE MODIFICATIONS WERE DELAYED AND PUSHING THE 
EFFECTIVE DATE TO AUGUST MOVES THE CHANGE TO THE MOST ACTIVE PART 
OF THE HURRICANE SEASON.

OLD MND HEADER BLOCK...TCM
HURRICANE INIKI FORECAST ADVISORY NUMBER 24
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI  CP102002
0300Z MON SEP 23 2002

NEW MND HEADER BLOCK...TCM
HURRICANE INIKI FORECAST ADVISORY NUMBER 24
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI  CP102002
0300 UTC MON SEP 23 2002

OLD MND HEADER BLOCK...TCA
TROPICAL STORM PATRICIA ICAO ADVISORY NUMBER 23
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  AL162003
0300Z SUN OCT 26 2003

NEW MND HEADER BLOCK...TCA
TROPICAL STORM PATRICIA ICAO ADVISORY NUMBER 23
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  AL162003
0300 UTC SUN OCT 26 2003

NOTE...THERE ARE NO CHANGES TO WMO HEADINGS OR AWIPS IDENTIFIERS 
AND NO ACTIONS ARE REQUIRED FOR CONTINUED RECEIPT OF THESE 
PRODUCTS. 

IF THERE IS AN ACTIVE STORM AT 1400 UTC ON JUNE 29 2006 IN THE 
ATLANTIC...EASTERN PACIFIC...OR CENTRAL PACIFIC HURRICANE 
BASINS...THE CHANGE WILL BE DELAYED BY INCREMENTS OF 24 HOURS 
UNTIL A TIME WHEN THERE ARE NO ACTIVE STORMS.  FOR EXAMPLE...IF 
PRODUCTS ARE BEING ISSUED ON TROPICAL STORM ALBERTO... THE CHANGE 
TO THE TCM AND TCA WOULD BE DELAYED UNTIL AT LEAST 1400 UTC JUNE 
30 2006...AND DELAYED FURTHER IF ALBERTO REMAINED ACTIVE.

IF YOU HAVE ANY COMMENTS OR QUESTIONS...PLEASE CONTACT:

SCOTT KISER 
NATIONAL WEATHER SERVICE
MARINE AND COASTAL SERVICES BRANCH
PHONE:  301-713-1677 EXTENSION 121
E-MAIL: SCOTT.KISER@NOAA.GOV 

THIS AND OTHER NWS NATIONAL PUBLIC INFORMATION STATEMENTS ARE 
AVAILABLE ONLINE AT /USE LOWER CASE LETTERS/:

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

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