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: KATLA 372030
PSN: N6338 W01907
VOLCANIC ASH CONCENTRATION: HIGH; 4000 MICROGRAMS PER CUBIC METRE CONTOUR
ISSUE TYPE: EXERCISE
MODEL RUN: 20250408/1600
ISSUE TIME: 20250408/1538
VALID: 20250408/2200
FLIGHT LEVEL: SFC/FL200
REMARKS: EXERCISE EXERCISE EXERCISE ERUPTION IN PROGRESS TO 20KM
ORIGINATOR: LONDON VAAC
POLY 1
N653003,W0170730
N650700,W0170730
N650336,W0152230
N644913,W0145230
N635230,W0141445
N634043,W0143730
N633948,W0152230
N635230,W0154717
N635230,W0181052
N632242,W0190730
N634245,W0203730
N640730,W0210247
N643424,W0200730
N651505,W0192230
N651344,W0182230
N653003,W0170730
