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: MEDIUM; 2000 MICROGRAMS PER CUBIC METRE CONTOUR
ISSUE TYPE: EXERCISE
MODEL RUN: 20200612/1100
ISSUE TIME: 20200612/1134
VALID FROM: 20200612/2300
VALID TO: 20200613/0500
FLIGHT LEVEL: FL350/FL550
REMARKS: EXERCISE. IMO CONFIRM RADAR AND OTHER OBSERVATIONS SUGGEST ERUPTION ONGOING, BUT PLUME HEIGHT NOW 11KM. VA OBS MOV NE AT 30KT. EXERCISE
ORIGINATOR: LONDON VAAC
POLY 1
N644115,W0171427
N644446,W0170923
N644910,W0163537
N644115,W0162305
N643432,W0163537
N643246,W0170923
N644115,W0171427
N644115,W0171427
POLY 2
N721046,W0033923
N720533,W0015808
N714845,W0012939
N700000,W0044652
N675923,W0084307
N655628,W0113152
N644408,W0134653
N643239,W0145422
N650345,W0155800
N652615,W0154624
N663345,W0135704
N691115,W0095741
N701845,W0084816
N713918,W0062808
N720034,W0052037
N721046,W0033923
N721046,W0033923
