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: 20250611/0300
FLIGHT LEVEL: FL350/FL550
REMARKS: EXERCISE ERUPTION ONGOING
ORIGINATOR: LONDON VAAC
POLY 1
N651737,W0123730
N650046,W0092230
N640730,W0043208
N605310,E0120730
N603730,E0123907
N602846,E0122230
N611652,E0075230
N621545,E0023730
N642230,W0125507
N642230,W0154911
N640812,W0170730
N642230,W0173519
N645128,W0165230
N651501,W0142230
N651737,W0123730
