IMPORTANT: ALWAYS CONSULT LATEST NOTAMS;  VOLCANIC ASH NOTAMS; ASHTAMS; OFFICIAL LONDON VAAC VOLCANIC ASH ADVISORY AND VOLCANIC ASH GRAPHICS; AND MET WATCH OFFICE VOLCANIC ASH SIGMETS
VOLCANO: GRIMSVOTN 373010
PSN: N6425 W01720
VOLCANIC ASH CONCENTRATION: HIGH; 4000 MICROGRAMS PER CUBIC METRE CONTOUR
ISSUE TYPE: EXERCISE
MODEL RUN: 20200612/0900
ISSUE TIME: 20200612/0859
VALID FROM: 20200612/2100
VALID TO: 20200613/0300
FLIGHT LEVEL: FL350/FL550
REMARKS: EXERCISE EXERCISE EXERCISE - ASH PLUME FROM GRIMSVOTN CONFIRMED TO 18KM FROM IMO RADAR DETECTION. AVIATION COLOUR CODE RED. EXERCISE EXERCISE EXERCISE
ORIGINATOR: LONDON VAAC
POLY 1
N714035,W0073537
N712408,W0055423
N712615,W0044627
N710345,W0042212
N692730,W0062808
N644657,W0134653
N640215,W0152807
N635636,W0170923
N641845,W0174235
N644115,W0174120
N692959,W0145422
N702932,W0131308
N711622,W0105808
N713222,W0095038
N714035,W0073537
