Flash Advisory

Flash Advisory June 26, 2008

ADVISORY TO ISCS USERS

TAFS Advisory

EFFECTIVE NOVEMBER 5 2008 ALL TAFS ISSUED BY NWS WILL CHANGE THE DATE AND TIME INDICATOR FORMAT IN THE TAF FROM THE PRESENT 24-HOUR FORMAT TO A NEW 30-HOUR FORMAT CONSISTENT WITH INTERNATIONAL CIVIL AVIATION ORGANIZATION /ICAO/ RULES. ALL OF THE NEARLY 625 TAFS ISSUED BY NWS WILL BE AFFECTED BY THIS CHANGE. A TABLE LISTING ALL THE AFFECTED TAFS IS ONLINE AT http://www.weather.gov/os/aviation/pdfs/30_hr_taf_tables.pdf