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: 20210611/1500
ISSUE TIME: 20210611/1449
VALID: 20210611/2100
FLIGHT LEVEL: SFC/FL200
REMARKS: ERUPTION ONGOING. SEE ANNOTATED SATELLITE IMAGERY FOR FURTHER DETAILS EXERCISE
ORIGINATOR: LONDON VAAC
POLY 1
N644034,W0170923
N643644,W0145422
N635615,W0132657
N634806,W0095038
N633345,W0085042
N625641,W0102423
N625411,W0113152
N631410,W0145422
N633437,W0160152
N633345,W0163940
N631810,W0170923
N631755,W0174308
N633345,W0180650
N641845,W0180835
N643543,W0174308
N644034,W0170923
