Santiaguito volcano (Guatemala): eruptions continue from lava dome

Vulcanian activity from the Santiaguito’s lava dome continues (image: @Centinela_35/x.com)

The extrusive-explosive eruption of the volcano continues.

Near-constant weak-to-moderate vulcanian-sized eruptions at regular intervals of 1 to 2 per hour continue.

Viscous, but gas-poor magma squeezes through the main conduit in search for the fastest way up to the surface and is being fragmented into grey ash-rich eruption plumes, rising up to about 14,000 ft (4,3 km) above the summit.

People are advised to avoid the sticky lava flow due to the strong heat which may cause burns and other serious injuries. The current hazards are also hot avalanches that can become mobilized into hot glowing currents (pyroclastic flows).

Volcanic activity worldwide 20 Apr 2026: Stromboli volcano, Fuego, Ibu, Dukono, Reventador, Mayon, S…

Map of today's active volcanoes

Map of today’s active volcanoes

Stromboli (Eolian Islands, Italy): (20 Apr) A phase of elevated activity has been taking place at the volcano, leading to a short-lived lava flow on the upper third of the Sciara del Fuoco during the past weekend.
Activity has since decreased again and the lava flow is now cooling.

Mayon (Luzon Island, Philippines): (20 Apr) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20260420/0034Z VA CLD UNKNOWN REPORTED OBS VA DTG:20/0030Z

Ibu (Halmahera, Indonesia): (20 Apr) 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 .
The full report is as follows: VA TO FL070 OBS ON SAT 19/2340Z MOV S OBS VA DTG:19/2340Z to 7000 ft (2100 m)

Dukono (Halmahera): (19 Apr) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 .
The full report is as follows: VA TO FL080 OBS AT 19/2150Z MOV SE EST VA DTG:19/2150Z to 8000 ft (2400 m)

Fuego (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: VA MOVG WSW to 14000 ft (4300 m)

Sangay (Ecuador): 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: VA EMS MOVG E to 21000 ft (6400 m)

Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 18000 ft (5500 m) altitude or flight level 180 .
The full report is as follows: RCNT VONA RPRT to 18000 ft (5500 m)

Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 and is moving at 10 kts in SE direction.
The full report is as follows: SPORADIC PUFF EMS to 22000 ft (6700 m)

Volcano Activity Summary for 20 Apr 2026:

Reventador Volcano Volcanic Ash Advisory: RCNT VONA RPRT to 18000 ft (5500 m)

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 18000 ft (5500 m) altitude or flight level 180 .
The full report is as follows:

FVXX23 at 15:12 UTC, 20/04/26 from KNES
VA ADVISORY
DTG: 20260420/1510Z

VAAC: WASHINGTON

VOLCANO: REVENTADOR 352010
PSN: S0004 W07739

AREA: ECUADOR

SOURCE ELEV: 11686 FT AMSL

ADVISORY NR: 2026/379

INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.

ERUPTION DETAILS: RCNT VONA RPRT

OBS VA DTG: 20/1450Z

OBS VA CLD: SFC/FL180 N0002 W07732 – S0002 W07729
– S0005 W07739 – S0004 W07740 – N0002 W07732 MOV
NE 10KT

FCST VA CLD +6HR: 20/2100Z SFC/FL180 S0002 W07725
– S0010 W07726 – S0005 W07740 – S0004 W07740 –
S0002 W07725

FCST VA CLD +12HR: 21/0300Z SFC/FL180 S0003
W07725 – S0011 W07725 – S0005 W07740 – S0004
W07740 – S0003 W07725

FCST VA CLD +18HR: 21/0900Z SFC/FL180 S0003
W07724 – S0011 W07725 – S0005 W07740 – S0004
W07740 – S0003 W07724

RMK: NEW VONA RPRT RCVD INDICATING VA TO FL180
MOVG NE. VA EMS OBS IN WEBCAM BUT STLT IMAGERY IS
OBSCD BY WX CLDS. VA FCST THRU T+18 HRS BASED ON
NWP MDLS. …COVERDALE

NXT ADVISORY: WILL BE ISSUED BY 20260420/2115Z

Sangay Volcano Volcanic Ash Advisory: VA EMS MOVG E to 21000 ft (6400 m)

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 12:22 UTC, 20/04/26 from KNES
VA ADVISORY
DTG: 20260420/1220Z

VAAC: WASHINGTON

VOLCANO: SANGAY 352090
PSN: S0200 W07820

AREA: ECUADOR

SOURCE ELEV: 17342 FT AMSL

ADVISORY NR: 2026/435

INFO SOURCE: GOES-19. VONA. WEBCAM. NWP MODELS.

ERUPTION DETAILS: VA EMS MOVG E

OBS VA DTG: 20/1200Z

OBS VA CLD: SFC/FL210 S0159 W07745 – S0207 W07746
– S0201 W07820 – S0159 W07820 – S0159 W07745 MOV
E 5KT

FCST VA CLD +6HR: 20/1800Z SFC/FL210 S0153 W07744
– S0202 W07743 – S0201 W07820 – S0159 W07820 –
S0153 W07744

FCST VA CLD +12HR: 21/0000Z SFC/FL210 S0155
W07755 – S0204 W07755 – S0201 W07820 – S0159
W07820 – S0155 W07755

FCST VA CLD +18HR: 21/0600Z SFC/FL210 S0200
W07820 – S0201 W07758 – S0210 W07801 – S0201
W07820 – S0200 W07820

RMK: RCNT VA EMS OBS IN STLT IMAGERY MOVG APPRX
35NM E FM SUMMIT. RCNT VONA RPRT RCVD. VA CRNTLY
OBSCD BY WX CLDS. VA FCST THRU T+18 HRS BASED ON
NWP MDL GUIDANCE. …COVERDALE

NXT ADVISORY: WILL BE ISSUED BY 20260420/1815Z

Fuego Volcano Volcanic Ash Advisory: VA MOVG WSW to 14000 ft (4300 m)

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:

FVXX20 at 11:00 UTC, 20/04/26 from KNES
VA ADVISORY
DTG: 20260420/1058Z

VAAC: WASHINGTON

VOLCANO: FUEGO 342090
PSN: N1428 W09052

AREA: GUATEMALA

SOURCE ELEV: 12346 FT AMSL

ADVISORY NR: 2026/462

INFO SOURCE: GOES-19. WEBCAM. NWP MODELS.

ERUPTION DETAILS: VA MOVG WSW

OBS VA DTG: 20/1030Z

OBS VA CLD: SFC/FL140 N1429 W09052 – N1428 W09052
– N1417 W09105 – N1423 W09108 – N1429 W09052 MOV
SW 10KT

FCST VA CLD +6HR: 20/1630Z SFC/FL140 N1428 W09052
– N1410 W09105 – N1419 W09113 – N1428 W09053 –
N1428 W09052

FCST VA CLD +12HR: 20/2230Z SFC/FL140 N1429
W09052 – N1428 W09052 – N1416 W09107 – N1426
W09110 – N1429 W09052

FCST VA CLD +18HR: 21/0430Z SFC/FL140 N1438
W09106 – N1428 W09052 – N1427 W09052 – N1428
W09109 – N1438 W09106

RMK: VA EMS OBS IN STLT IMAGERY AND WEBCAM MOVG
APPRX 15NM WSW FM SUMMIT. VA FCST THRU T+18 HRS
BASED ON NWP MDL GUIDANCE. …COVERDALE

NXT ADVISORY: WILL BE ISSUED BY 20260420/1700Z