NOUS41 KWBC 221444
PNSWSH

SERVICE CHANGE NOTICE 06-42
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
940 AM EST WED NOV 22 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
	   	MARINE AND COASTAL SERVICES BRANCH CHIEF

SUBJECT:	    CHANGES TO THE SURF ZONE FORECAST AND TIDE DATA 
                PRODUCTS FOR GUAM AND THE NORTHERN MARIANA ISLANDS: 
                EFFECTIVE FEBRUARY 14 2007

EFFECTIVE TUESDAY FEBRUARY 13 2007 AT 2000 COORDINATED UNIVERSAL 
TIME /UTC/...OR WEDNESDAY FEBRUARY 14 2007 AT 0600 AM GUAM LOCAL 
STANDARD TIME /LST/...CHANGES WILL BE MADE TO THE ISSUANCE AND 
CONTENT OF THE SURF ZONE FORECAST /SRF/ AND THE ISSUANCE OF THE 
GUAM CLIMATE AND TIDE DATA /TID/ PRODUCTS. THESE CHANGES ARE IN 
RESPONSE TO CUSTOMER FEEDBACK RECEIVED FROM THE MARINE SURVEY 
CONDUCTED BY THE WEATHER FORECAST OFFICE /WFO/ AT TIYAN GUAM.

1.  THE FOLLOWING IS A SUMMARY OF THE CHANGES TO THE SRF
PRODUCT EFFECTIVE FEBRUARY 14 2007 AT 0600 AM GUAM LST.

THE CURRENT SRF PRODUCT IS ISSUED ONCE PER DAY AT 0600 AM GUAM 
LST...2000 UTC.

THE NEW SRF PRODUCT WILL BE ISSUED TWICE PER DAY AT:
0600 AM GUAM LST...2000 UTC.
0600 PM GUAM LST...0800 UTC.

THE FOLLOWING PARAMETERS WILL BE REMOVED FROM THE NEW SRF 
PRODUCT:
	LIGHTNING RISK
	CLIMATE DATA

USERS MAY REFER TO THE FOLLOWING ROUTINE FORECAST PRODUCTS 
ISSUED BY WFO TIYAN FOR THUNDERSTORM INFORMATION:

PRODUCT				WMO HEADER		AWIPS ID
PUBLIC ZONE FORECAST		FPMY50 PGUM		ZFPMY
COASTAL WATERS FORECAST		FZMY50 PGUM		CWFMY

ADDITIONALLY...USERS MAY REFER TO THE FOLLOWING EVENT DRIVEN 
PRODUCTS ISSUED BY WFO TIYAN WHEN THUNDERSTORMS ARE NEAR OR OVER  
ISLANDS:

PRODUCT				WMO HEADER		AWIPS ID
NOWCAST				FPMY70 PGUM		NOWMY
MARINE WEATHER STATEMENT	FZMY70 PBUM		MWSMY

CLIMATE DATA IS AVAILABLE DAILY AT AWIPS HEADER CLIGUM...AND WMO 
HEADER CDGM40 PGUM.

THE FOLLOWING FORECAST PARAMETERS WILL BE ADDED TO THE NEW SRF:
	PRIMARY/SECONDARY SWELL
	PRIMARY/SECONDARY WAVE PERIOD
	WIND
	HEAT INDEX
	TIDE DATA FOR SAIPAN AND TINIAN

THE FOLLOWING HEADLINES WILL BE ADDED TO THE NEW SRF PRODUCT 
WHEN REQUIRED:
	HIGH RISK OF RIP CURRENTS
	HIGH SURF ADVISORY

HEADLINES WILL REFERENCE THE AFFECTED REEFS TO FOUR DIRECTIONAL 
POINTS...NORTH...EAST...SOUTH...AND WEST.  HEADLINES WILL 
INCLUDE A TIME DESCRIPTOR.

THERE ARE NO CHANGES TO THE AWIPS AND WMO PRODUCT HEADERS FOR 
THE SRF...WHICH WILL CONTINUE TO USE AWIPS ID SRFMY...AND WMO 
HEADER FZMY50 PGUM.

AN EXAMPLE OF THE NEW SRF PRODUCT FORMAT IS PROVIDED ONLINE AT 
/USE LOWER CASE LETTERS/:

	HTTP://WWW.PRH.NOAA.GOV/GUAM/SRFEXAMPLE.TXT

2.  THE FOLLOWING IS A SUMMARY OF THE CHANGES TO THE TID PRODUCT 
EFFECTIVE DECEMBER XX 2006.

THE CURRENT TID PRODUCT IS ISSUED ONCE PER DAY AT 0500 PM 
LST...0700 UTC.

THE NEW TID PRODUCT WILL BE ISSUED TWICE PER DAY AT:
0600 AM LST...2000 UTC
0600 PM LST...0800 UTC

THERE WILL BE NO CHANGES TO THE PRODUCT FORMAT OR CONTENT.

THERE ARE NO CHANGES TO THE AWIPS AND WMO PRODUCT HEADERS FOR 
THE TID...WHICH WILL CONTINUE TO USE AWIPS HEADER TIDGUM AND… 
WMO HEADER SOGM40 PGUM.

IF YOU HAVE QUESTIONS ABOUT THESE CHANGES PLEASE CONTACT:

     SARAH PRIOR
     MARINE PROGRAM LEADER
     NWS WFO TIYAN GUAM
     PHONE 671-472-0950
        OR
     WAYNE WEEKS
     NATIONAL WEATHER SERVICE
     MARINE AND COASTAL SERVICES BRANCH
     1325 EAST WEST HWY ROOM 13100
     SILVER SPRING MARYLAND 20910
     PHONE: 301-713-1677 EXTENSION 129

THIS NOTICE AND OTHER SERVICE CHANGE NOTICES ARE AVAILABLE 
ONLINE AT /USE LOWER CASE LETTERS/:
   
     HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM

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