FVXX27 KNES 281224 VOLCANIC ASH ADVISORY DTG: 20080228/1224Z VAAC: WASHINGTON VOLCANO: USER MESSAGE PSN: 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 28/1200Z - 29/0000Z. PLEASE BE AWARE THAT AFWA WILL ISSUE ANY NECESSARY VOLCANIC ASH ADVISORIES ON BEHALF OF THE WASHINGTON VAAC DURING THIS TIME FRAME. NNNN