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: THORDARHYRNA 373012
PSN: N6416 W01737
VOLCANIC ASH CONCENTRATION: MEDIUM; 2000 MICROGRAMS PER CUBIC METRE CONTOUR
ISSUE TYPE: EXERCISE
MODEL RUN: 20220211/1500
ISSUE TIME: 20220211/1535
VALID: 20220211/2100
FLIGHT LEVEL: SFC/FL200
REMARKS: EXERCISE ERUPTION DETECTED ON INFRASOUND SENSOR WITH ASH PLUME VISIBLE ON RADAR AND WEBCAMS SOUTH OF VOLCANO
ORIGINATOR: LONDON VAAC
POLY 1
N652523,W0142038
N652042,W0113152
N644115,W0095855
N641654,W0113426
N635810,W0152807
N634223,W0210158
N635615,W0213452
N641845,W0213825
N645825,W0203153
N652244,W0174830
N652523,W0142038
