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PNSWSH

PUBLIC INFORMATION STATEMENT...SERVICE CHANGE NOTICE 03-26
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
435 PM EDT TUE APRIL 29 2003

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...AND NWS EMPLOYEES

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

SUBJECT   CHANGES TO TROPICAL CYCLONE FORECAST/ADVISORY
          PRODUCT...EFFECTIVE MAY 15 2003

EFFECTIVE MAY 15 2003..THE TROPICAL PREDICTION CENTER/NATIONAL
HURRICANE CENTER /NHC/ AND THE CENTRAL PACIFIC HURRICANE CENTER
/CPHC/ WILL CHANGE THE FORMAT OF THE CODED STRING APPENDED TO THE
END OF THE ISSUING OFFICE LINE /NWS TPC/NATIONAL HURRICANE CENTER
MIAMI FL/ OF THE MASS NEWS MEDIA DISSEMINATOR HEADER BLOCK ON THE
TROPICAL CYCLONE FORECAST/ADVISORY PRODUCT.  THE STRING WILL
CHANGE THE YEAR FROM TWO DIGITS TO FOUR DIGITS.  CODING IS AS
FOLLOWS...

EXAMPLE
HURRICANE ISIDORE FORECAST/ADVISORY NUMBER  28
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL   AL102002
0300Z MON SEP 23 2002

FORMAT
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  BSNOYR

WHERE     /BS/ IS THE BASIN 
               AL...ATLANTIC  
               EP...EASTERN PACIFIC
               CP...CENTRAL PACIFIC
WHERE     /NO/ IS THE TROPICAL CYCLONE NUMBER 01...99
WHERE     /YR/ IS FOUR DIGITS OF THE YEAR


TABLE 1.  PRODUCTS AFFECTED BY THIS CHANGE

PRODUCT                       WMO HEADING           AWIPS ID

TROPICAL CYCLONE FORECAST/ADVISORY
ATLANTIC                      WTNT<21-25> KNHC      TCMAT<1-5>
EAST PACIFIC                  WTPZ<21-25> KNHC      TCMEP<1-5>
CENTRAL PACIFIC               WTPA<21-25> PHFO      TCMCP<1-5>

NOTE...THERE ARE NO CHANGES TO WMO HEADINGS OR AWIPS IDENTIFIERS
AND NO ACTIONS ARE REQUIRED FOR CONTINUED RECEIPT OF THIS PRODUCT
FROM NHC AND CPHC.  NWS CUSTOMERS WHO DECODE THIS CODED STRING
APPENDED TO THE ISSUING OFFICE LINE MAY NEED TO MODIFY RELATED
SOFTWARE OR OTHER DATA PROCESSING PROGRAMS NO LATER THAN 
MAY 15 2003 TO ACCOMMODATE THIS CHANGE. 
               
A PUBLIC INFORMATION STATEMENT DETAILING OTHER CHANGES TO THE
TROPICAL CYCLONE FORECAST/ADVISORY PRODUCT WAS ISSUED BY THE NWS
ON MARCH 10 2003...REFERENCE SCN 03-16...POSTED ON THE
NOTIFICATION WEB SITE SHOWN AT THE END OF THIS SERVICE CHANGE
NOTICE.
                              
A WEB PAGE HAS BEEN ESTABLISHED TO ALLOW USERS TO TEST ALL
CHANGES TO THE TROPICAL CYCLONE FORECAST/ADVISORY PRODUCT TO
ENSURE CORRECT PRODUCT DECODING.  SEE EXAMPLES AT /USE LOWER CASE
LETTERS/...

          www.nhc.noaa.gov/newformat_examples.shtml

IF YOU HAVE ANY QUESTIONS ABOUT THIS CHANGE...PLEASE CONTACT

     MR. SCOTT KISER
     NATIONAL WEATHER SERVICE
     MARINE AND COASTAL SERVICES BRANCH
     1325 EAST WEST HWY ROOM 13126
     SILVER SPRING MARYLAND 20910

     PHONE  /301/ 713 1677 EXTENSION 121

THIS NOTICE AND OTHER SERVICE CHANGE NOTICES ARE AVAILABLE ON THE
INTERNET AT /USE LOWER CASE LETTERS/

               http://www.nws.noaa.gov/om/notif.htm

$$
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