Kategorie: Climate Change

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:

FVXX20 at 02:39 UTC, 24/12/25 from KNES
VA ADVISORY
DTG: 20251224/0236Z

VAAC: WASHINGTON

VOLCANO: REVENTADOR 352010
PSN: S0005 W07739

AREA: ECUADOR

SOURCE ELEV: 11686 FT AMSL

ADVISORY NR: 2025/1315

INFO SOURCE: GOES-19. NWP MODELS.

ERUPTION DETAILS: VA EMS LKLY

OBS VA DTG: 24/0210Z

OBS VA CLD: SFC/FL150 S0005 W07738 – S0008 W07735
– S0010 W07737 – S0005 W07740 – S0005 W07738 MOV
SE 5KT

FCST VA CLD +6HR: 24/0800Z SFC/FL150 S0004 W07738
– S0011 W07731 – S0014 W07734 – S0005 W07740 –
S0004 W07738

FCST VA CLD +12HR: 24/1400Z SFC/FL150 S0004
W07738 – S0013 W07732 – S0014 W07736 – S0004
W07740 – S0004 W07738

FCST VA CLD +18HR: 24/2000Z SFC/FL150 S0004
W07739 – S0009 W07730 – S0013 W07732 – S0005
W07740 – S0004 W07739

RMK: VA EMS LKLY OBS THRU WX CLDS MOVNG SE FM
SUMMIT. WX CLDS PSBLY OSBCNG ADDTNL VA EMS BASED
ON PREV ACTIVITY. NWP MDL GUIDANCE FCSTS GEN SE
MOVMT THRU T+18. …MONAGHAN

NXT ADVISORY: WILL BE ISSUED BY 20251224/0830Z

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

FVAU01 at 23:18 UTC, 23/12/25 from ADRM
VA ADVISORY
DTG: 20251223/2320Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2025/1435
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: ERUPTION REPORTED AT 23/2227Z
EST VA DTG: 23/2300Z
EST VA CLD: SFC/FL070 N0132 E12741 – N0103 E12750 – N0104
E12723 – N0132 E12735 MOV S 10KT
FCST VA CLD +6 HR: 24/0500Z SFC/FL070 N0132 E12741 – N0104
E12756 – N0105 E12719 – N0132 E12735
FCST VA CLD +12 HR: 24/1100Z SFC/FL070 N0132 E12741 – N0102
E12742 – N0107 E12718 – N0132 E12735
FCST VA CLD +18 HR: 24/1700Z SFC/FL070 N0132 E12741 – N0102
E12745 – N0108 E12716 – N0132 E12735
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
CLOUD. RECENT GROUND REPORTS INDICATE ERUPTIONS ARE ONGOING.
VA HEIGHT AND MOVEMENT BASED ON GROUND REPORTS AND MODEL
GUIDANCE.
NXT ADVISORY: NO LATER THAN 20251224/0520Z=

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 .
The full report is as follows:

FVAU02 at 17:00 UTC, 23/12/25 from ADRM
VA ADVISORY
DTG: 20251223/1700Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2025/1464
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: VA TO FL150 LAST REPORTED 23/1537Z MOV NE
EST VA DTG: 23/1640Z
EST VA CLD: SFC/FL150 S0808 E11255 – S0806 E11250 – S0751
E11250 – S0734 E11258 – S0746 E11316 MOV NE 10KT
FCST VA CLD +6 HR: 23/2240Z SFC/FL150 S0808 E11254 – S0805
E11250 – S0754 E11251 – S0734 E11300 – S0751 E11320
FCST VA CLD +12 HR: 24/0440Z SFC/FL150 S0809 E11254 – S0806
E11250 – S0735 E11301 – S0752 E11321
FCST VA CLD +18 HR: 24/1040Z SFC/FL150 S0809 E11252 – S0804
E11249 – S0740 E11309 – S0757 E11323 – S0809 E11306
RMK: VA NOT IDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
CLOUD. GROUND REPORTS INDICATE INTERMITTENT DISCRETE
EMISSIONS ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON
GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20251223/2300Z=

World map showing currently active volcanoes as of 23 Dec 2025

Dense but steady activity defined today’s global picture, anchored by ongoing eruptions in Hawaiʻi and the Aleutians and widespread unrest and eruptions across Indonesia. Kīlauea and Great Sitkin both held at Watch with Aviation ORANGE. In Indonesia, Semeru and Merapi remained at Level 3, Lewotobi produced a low gas plume, and Popocatépetl stayed active in Mexico.

United States
Great Sitkin (Watch / Aviation ORANGE) and Kīlauea (Watch / Aviation ORANGE) are in eruption with no additional plume or flow details noted. Shishaldin (Advisory / Aviation YELLOW) shows ongoing unrest.

Indonesia
Across the arc, Semeru and Merapi (both Level 3) continue erupting. Lewotobi (Level 3) released gas-and-steam up to about 100 m above the vent. Several others are erupting at Level 2, while multiple systems show Level 2 unrest.

Japan
Aira continued erupting at Level 3. Asamayama and Kusatsu-Shiranesan exhibited Level 2 unrest.

Philippines
Kanlaon’s eruption persisted at Alert Level 2. Taal and Mayon showed low-level unrest at Level 1.

Mexico
Popocatépetl continued its eruption (Yellow Phase 2). No specific plume heights or explosion counts were reported in this update.

South America
Eruptions persisted at Ecuador’s Reventador and Sangay, Peru’s Sabancaya, and Colombia’s Puracé. No detailed plume or explosion measurements accompanied today’s alerts.

Source: Smithsonian / USGS GVP report incorporating observations dated 21–22 December 2025 (local).

Activity Summary for 22 December 2025

Satellite image of Ibu volcano on 23 Dec 2025

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

FVAU01 at 11:18 UTC, 23/12/25 from ADRM
VA ADVISORY
DTG: 20251223/1120Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2025/1433
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: VA EMISSION REPORTED AT 23/0639Z
EST VA DTG: 23/1100Z
EST VA CLD: SFC/FL070 N0134 E12736 – N0134 E12741 – N0104
E12751 – N0104 E12724 MOV S 10KT
FCST VA CLD +6 HR: 23/1700Z SFC/FL070 N0133 E12741 – N0105
E12755 – N0106 E12719 – N0134 E12735
FCST VA CLD +12 HR: 23/2300Z SFC/FL070 N0133 E12742 – N0105
E12752 – N0107 E12719 – N0134 E12735
FCST VA CLD +18 HR: 24/0500Z SFC/FL070 N0134 E12735 – N0134
E12742 – N0104 E12754 – N0106 E12719
RMK: VA NOT IDENTIFIABLE ON RECENT SATELLITE IMAGERY DUE TO
MET CLOUD. VA EMISSIONS ARE EXPECTED TO BE ONGOING. VA
HEIGHT AND MOVEMENT BASED ON GROUND REPORTS AND MODEL
GUIDANCE.
NXT ADVISORY: NO LATER THAN 20251223/1720Z=