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: 20250610/0900
ISSUE TIME: 20250610/0923
VALID: 20250610/0900
FLIGHT LEVEL: FL350/FL550
REMARKS: EXERCISE ERUPTION ONGOING
ORIGINATOR: LONDON VAAC
POLY 1
N642230,W0173228
N643228,W0172230
N643529,W0170730
N643430,W0165230
N643243,W0163730
N643025,W0162230
N642433,W0160730
N642230,W0160348
N642027,W0160730
N641435,W0162230
N641217,W0163730
N641030,W0165230
N640931,W0170730
N641232,W0172230
N642230,W0173228
