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: 20220114/1500
ISSUE TIME: 20220114/1512
VALID: 20220115/0300
FLIGHT LEVEL: FL200/FL350
REMARKS: EXERCISE EXERCISE EXERCISE PLUME HEIGHT ESTIMATED AT 25KM
ORIGINATOR: LONDON VAAC
POLY 1
N631115,W0095732
N635830,W0134653
N635615,W0163825
N631206,W0185037
N635615,W0192315
N652302,W0160152
N661115,W0101158
N673031,W0070153
N665425,W0044652
N670239,E0005037
N661820,E0033922
N661115,E0061018
N655117,W0005037
N631115,W0095732
POLY 2
N654845,E0064225
N655930,E0070153
N655117,E0073537
N654845,E0074225
N654502,E0073537
N654101,E0070153
N654845,E0064225
