Volcanic activity worldwide 21 Dec 2025: Santiaguito volcano, Fuego, Popocatépetl, Semeru, Ibu, Duk…

Map of today's active volcanoes

Map of today’s active volcanoes

Ibu (Halmahera, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 and is moving at 10 kts in E direction.
The full report is as follows: VA TO FL070 LAST REPORTED AT 21/1240Z MOV E to 7000 ft (2100 m)

Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 10 kts in NE direction.
The full report is as follows: VA TO FL150 LAST REPORTED 21/1440Z EST VA DTG:21/1650Z to 15000 ft (4600 m)

Dukono (Halmahera): (21 Dec) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 and is moving at 15 kts in E direction.
The full report is as follows: VA TO FL070 OBS AT 21/0030Z, EXT E OBS VA DTG:21/0030Z to 7000 ft (2100 m)

Popocatépetl (Central Mexico): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 23000 ft (7000 m) altitude or flight level 230 .
The full report is as follows: LARGE VA EMISSIONS to 23000 ft (7000 m)

Santiaguito (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .
The full report is as follows: NEW VA EMS to 14000 ft (4300 m)

Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: ONGOING VA EM to 15000 ft (4600 m)

Puracé (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: LGT VA EM LKLY

Sangay (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: OCNL VA EMS

Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 16000 ft (4900 m) altitude or flight level 160 .
The full report is as follows: VA EMS OBS to 16000 ft (4900 m)

Volcano Activity Summary for 21 Dec 2025:

Semeru Volcano Volcanic Ash Advisory: VA TO FL150 LAST REPORTED 21/1440Z EST VA DTG: 21/1650Z to 15000 ft (4600 m)

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 10 kts in NE direction.
The full report is as follows:

FVAU02 at 17:00 UTC, 21/12/25 from ADRM
VA ADVISORY
DTG: 20251221/1710Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2025/1456
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: VA TO FL150 LAST REPORTED 21/1440Z
EST VA DTG: 21/1650Z
EST VA CLD: SFC/FL150 S0810 E11254 – S0806 E11250 – S0746
E11300 – S0800 E11315 MOV NE 10KT
FCST VA CLD +6 HR: 21/2250Z SFC/FL150 S0810 E11254 – S0806
E11250 – S0746 E11257 – S0758 E11313
FCST VA CLD +12 HR: 22/0450Z SFC/FL150 S0810 E11254 – S0806
E11250 – S0746 E11257 – S0758 E11312
FCST VA CLD +18 HR: 22/1050Z SFC/FL150 S0810 E11254 – S0806
E11250 – S0746 E11257 – S0758 E11312
RMK: VA NOT IDENTIFIABLE ON LATEST SATELLITE IMAGERY DUE TO
MET CLOUD. RECENT GROUND REPORTS INDICATE INTERMITTENT
DISCRETE EMISSIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED
ON GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20251221/2310Z=

Fuego Volcano Volcanic Ash Advisory: ONGOING VA EM to 15000 ft (4600 m)

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows:

FVXX23 at 14:27 UTC, 21/12/25 from KNES
VA ADVISORY
DTG: 20251221/1424Z

VAAC: WASHINGTON

VOLCANO: FUEGO 342090
PSN: N1428 W09052

AREA: GUATEMALA

SOURCE ELEV: 12346 FT AMSL

ADVISORY NR: 2025/698

INFO SOURCE: GOES-19. NWP MODELS.

ERUPTION DETAILS: ONGOING VA EM

OBS VA DTG: 21/1340Z

OBS VA CLD: SFC/FL150 N1428 W09052 – N1427 W09052
– N1419 W09111 – N1426 W09114 – N1428 W09052 MOV
W 10KT

FCST VA CLD +6HR: 21/1930Z SFC/FL150 N1428 W09052
– N1427 W09052 – N1413 W09115 – N1423 W09120 –
N1428 W09052

FCST VA CLD +12HR: 22/0130Z SFC/FL150 N1428
W09052 – N1427 W09052 – N1413 W09116 – N1423
W09120 – N1428 W09052

FCST VA CLD +18HR: 22/0730Z SFC/FL150 N1428
W09052 – N1427 W09051 – N1410 W09114 – N1422
W09119 – N1428 W09052

RMK: VA EM SEEN IN STLT IMG MOVNG WSW AT APX 20
NMI FM SUMMIT. EXP CONT WSW MOVNT THRU T+18 HRS.
FL AND FCST BSD ON NWP MDLS. …LINER

NXT ADVISORY: WILL BE ISSUED BY 20251221/2030Z