afi met bulletins exchange (ambex) handbook - ICAO

AFI Regional SIGMET Guide Page 48/60
Attachment 1 to Appendix J
AFI SIGMET TEST PROCEDURES
Format of VA Test advisories and SIGMETs
1. The format of VA and TC advisories are as in ICAO Annex 3:
Table A2-1. Template for advisory message for volcanic ash
Table A2-2. Template for advisory message for tropical cyclones.
Example of TEST Volcanic Ash Advisory
VA ADVISORY
DTG : YYYYMMDD/hhmm
VAAC: (name of VAAC
VOLCANO : TEST
PSN : UNKNOWN
AREA : ( name of VAAC ) VAAC AREA
SUMMIT ELEV : UNKNOWN
ADVISORY NR : YYYY/nn (actual number)
INFO SOURCE : NIL
AVIATION COLOUR CODE : NIL
ERUPTION DETAILS : NIL
OBS VA DTG : DD/0150Z
OBS VA DTG : ASH NOT IDENTIFIABLE FROM SATELLITE
DATA
FCST VA CLD + 6HR : 01/ 0800 Z SFC/FL600 NO ASH EXP
FCST VA CLD + 12 HR : 01/1400 Z SFC/FL600 NO ASH EXP
FCST VA CLD + 18 HR : 01/2000 Z SFC/FL600 NO ASH EXP
RMK: THIS IS A TEST VA ADVISORY. MWO SHOULD NOW ISSUE A TEST SIGMET
FOR VA, UNLESS THERE IS A VALID SIGMET FOR VA.
PLEASE REFER TO THE LETTER FROM ICAO AFI OFFICE DATED xxxxxx.
NXT ADVISORY : NO FURTHER ADVISORIES =
2. Example of Format of TEST Tropical Cyclone ADVISORY
TC ADVISORY
DTG : YYYYMMDD/hhmm
TCAC : ( name of TCAC)
TC : TEST
NR : nn (actual number)
PSN : NIL
MOV : NIL
C: NIL
MAX WIND : NIL
FCST PSN + 06HR : NIL
FCST MAX WIND + 6HR : NIL
Ninth Edition September 2007 Amend1/2010
J-6