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: 20210612/0300
FLIGHT LEVEL: SFC/FL200
REMARKS: ERUPTION ONGOING. SEE ANNOTATED SATELLITE IMAGERY FOR FURTHER DETAILS EXERCISE
ORIGINATOR: LONDON VAAC
POLY 1
N644030,W0163537
N630931,W0062808
N632850,W0030538
N632608,W0012422
N631115,W0011417
N623253,W0023153
N621731,W0033923
N621018,W0062808
N621403,W0080922
N624845,W0112409
N625146,W0163537
N630906,W0170923
N631341,W0181653
N633345,W0183513
N643426,W0174308
N644030,W0163537
