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Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report:

FVFE01 at 11:21 UTC, 18/04/26 from RJTD
VA ADVISORY
DTG: 20260418/1121Z
VAAC: TOKYO
VOLCANO: SAKURAJIMA [AIRA CALDERA] 282080
PSN: N3136 E13039
AREA: JAPAN
SOURCE ELEV: 1117M AMSL
ADVISORY NR: 2026/36
INFO SOURCE: JMA HIMAWARI-9
ERUPTION DETAILS: EXPLODED AT 20260418/1103Z FL090 EXTD W
OBS VA DTG: 18/1100Z
OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA WIND FL090 080/8KT
FCST VA CLD +6 HR: NOT AVBL
FCST VA CLD +12 HR: NOT AVBL
FCST VA CLD +18 HR: NOT AVBL
RMK: WE WILL ISSUE FURTHER ADVISORY IF VA IS DETECTED IN SATELLITE
IMAGERY.
NXT ADVISORY: NO FURTHER ADVISORIES=

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 21000 ft (6400 m) altitude or flight level 210 .
The full report is as follows:

FVXX21 at 05:00 UTC, 18/04/26 from KNES
VA ADVISORY
DTG: 20260418/0458Z

VAAC: WASHINGTON

VOLCANO: SANGAY 352090
PSN: S0200 W07820

AREA: ECUADOR

SOURCE ELEV: 17342 FT AMSL

ADVISORY NR: 2026/425

INFO SOURCE: GOES-19. NWP MODELS.

ERUPTION DETAILS: LKLY VA SIG OBSD.

OBS VA DTG: 18/0420Z

OBS VA CLD: SFC/FL210 S0152 W07804 – S0159 W07803
– S0201 W07820 – S0200 W07820 – S0152 W07804 MOV
E 15KT

FCST VA CLD +6HR: 18/1030Z SFC/FL210 S0140 W07800
– S0152 W07752 – S0201 W07820 – S0200 W07820 –
S0140 W07800

FCST VA CLD +12HR: 18/1630Z SFC/FL210 S0143
W07758 – S0156 W07753 – S0201 W07820 – S0159
W07820 – S0143 W07758

FCST VA CLD +18HR: 18/2230Z SFC/FL210 S0150
W07753 – S0207 W07755 – S0201 W07820 – S0200
W07820 – S0150 W07753

RMK: LKLY VA CLD OBSD ABT 15 NMI ENE OF SUMMIT.
FL ESTD FM NWP MDLS. NWP MDLS FCST VA TO GENLY
MOV NE THRU T+12HRS THEN E-ESE BY T+18HRS.
…HOSLEY

NXT ADVISORY: WILL BE ISSUED BY 20260418/1100Z

Satellite image of Mayon volcano on 18 Apr 2026

Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report:

FVFE01 at 04:34 UTC, 18/04/26 from RJTD
VA ADVISORY
DTG: 20260418/0434Z
VAAC: TOKYO
VOLCANO: MAYON 273030
PSN: N1315 E12341
AREA: PHILIPPINES
SOURCE ELEV: 2462M AMSL
ADVISORY NR: 2026/503
INFO SOURCE: HIMAWARI-9 PHIVOLCS
ERUPTION DETAILS: ERUPTION AT 20260418/0416Z FL100 EXTD W REPORTED
OBS VA DTG: 18/0410Z
OBS VA CLD: VA NOT IDENTIFIABLE FM SATELLITE DATA WIND FL100 040/6KT
FCST VA CLD +6 HR: NOT AVBL
FCST VA CLD +12 HR: NOT AVBL
FCST VA CLD +18 HR: NOT AVBL
RMK: WE WILL ISSUE FURTHER ADVISORY IF VA IS DETECTED IN SATELLITE
IMAGERY.
NXT ADVISORY: NO FURTHER ADVISORIES=