NOUS41 KWBC 071849
PNSWSH

TECHNICAL INFORMATION NOTICE 08-18
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
149 PM EST FRI MAR 7 2008

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

FROM:    KEVIN L. JOHNSTON
         CHIEF...AVIATION SERVICES BRANCH 
     
SUBJECT: WESTERN REGION LOCATIONS ADOPTING A 30-HOUR VALID PERIOD: 
         EFFECTIVE NOVEMBER 5 2008  

REFER TO SERVICE CHANGE NOTICE /SCN/ 08-15.
REFER TO TECHNICAL INFORMATION NOTICES /TIN/ 08-16 AND 08-17

EFFECTIVE 1800 UNIVERAL COORDINATED TIME /UTC/ NOVEMBER 5 2008 THE 
FOLLOWING TAFS WILL BE VALID FOR 30 HOURS.  THIS IS AN INCREASE 
FROM THE PRESENT 24-HOUR VALID PERIOD.  

LAX	LOS ANGELES INTERNATIONAL AIRPORT /KLAX/
OAK	METROPOLITAN OAKLAND INTERNATIONAL AIRPORT /KOAK/
ONT	ONTARIO INTERNATIONAL AIRPORT /KONT/
SAN	SAN DIEGO INTERNATIONL AIRPORT - LINDBERGH FIELD /KSAN/
SEA	SEATTLE-TACOMA INTERNATIONAL AIRPORT /KSEA/
SFO	SAN FRANCISCO INTERNATIONAL AIRPORT /KSFO/
SLC	SALT LAKE CITY INTERNATIONAL AIRPORT /KSLC/

FOR QUESTIONS REGARDING THIS TECHNICAL INFORMATION NOTICE PLEASE 
REFER TO SCN 08-15 OR CONTACT:

    SCOTT BIRCH
    NATIONAL WEATHER SERVICE
    125 S STATE ST
    SALT LAKE CITY, UT 84138-1102
    PHONE: (801) 524-4000
    EMAIL: SCOTT.BIRCH@NOAA.GOV

SERVICE CHANGE NOTICES ARE ONLINE AT /USE LOWER CASE LETTERS/:

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

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