FVXX27 KWBC 171300 VOLCANIC ASH ADVISORY ISSUED: 2003JAN17/1300Z VAAC: WASHINGTON VAAC VOLCANO: MESSAGE TO USERS LOCATION: XX AREA: XX REMARKS: THE AIR FORCE WEATHER AGENCY IS ISSUING THIS MESSAGE ON BEHALF OF THE WASHINGTON VAAC. AFWA AND THE WASHINGTON VAAC ARE CONDUCTING A COORDINATED OPERATIONAL BACKUP TEST FROM 17/1300Z- 17/2000Z. PLEASE BE AWARE THAT AFWA WILL ISSUE ANY NECESSARY VOLCANIC ASH ADVISORIES ON BEHALF OF THE WASHINGTON VAAC DURING THIS TIME FRAME. NNNN