Schlagwort: volcano

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

FVAU02 at 17:14 UTC, 25/02/26 from ADRM
VA ADVISORY
DTG: 20260225/1720Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/229
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: ERUPTION LAST REPORTED AT 25/0900Z
EST VA DTG: 25/1700Z
EST VA CLD: SFC/FL150 S0805 E11252 – S0750 E11319 – S0758
E11328 – S0807 E11324 – S0809 E11254 MOV E 15KT
FCST VA CLD +6 HR: 25/2300Z SFC/FL150 S0809 E11254 – S0806
E11252 – S0743 E11312 – S0749 E11324 – S0801 E11325
FCST VA CLD +12 HR: 26/0500Z SFC/FL150 S0809 E11254 – S0806
E11252 – S0744 E11312 – S0749 E11324 – S0801 E11325
FCST VA CLD +18 HR: 26/1100Z SFC/FL150 S0809 E11255 – S0806
E11252 – S0743 E11312 – S0749 E11324 – S0801 E11325
RMK: VA NOT IDENTIFIABLE ON LATEST SATELLITE IMAGERY DUE TO
MET CLOUD. GROUND REPORTS INDICATE INTERMITTENT ERUPTIONS
ARE ONGOING. VA HEIGHT AND MOVEMENT BASED ON GROUND REPORTS
AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260225/2320Z=

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 and is moving at 5 kts in SW direction.
The full report is as follows:

FVXX21 at 15:42 UTC, 25/02/26 from KNES
VA ADVISORY
DTG: 20260225/1539Z

VAAC: WASHINGTON

VOLCANO: SANGAY 352090
PSN: S0200 W07820

AREA: ECUADOR

SOURCE ELEV: 17342 FT AMSL

ADVISORY NR: 2026/211

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

ERUPTION DETAILS: NEW VA EMS RPRTD

OBS VA DTG: 25/1510Z

OBS VA CLD: SFC/FL200 S0159 W07820 – S0219 W07823
– S0210 W07837 – S0159 W07820 MOV SW 5KT

FCST VA CLD +6HR: 25/2100Z SFC/FL200 S0159 W07820
– S0218 W07827 – S0207 W07840 – S0159 W07820

FCST VA CLD +12HR: 26/0300Z SFC/FL200 S0159
W07820 – S0219 W07828 – S0206 W07843 – S0159
W07820

FCST VA CLD +18HR: 26/0900Z SFC/FL200 S0200
W07820 – S0218 W07832 – S0204 W07846 – S0200
W07820

RMK: NEW VA EMS RPRTD MOV SW FM SUMMIT. VA NOT
OBS IN STLT IMAGERY DUE TO WX CLDS. PSBL CONT VA
FCST TO CONT SW MOV THRU T+18HRS BEFORE DISP. VO
ACT LOW. …FISHER

NXT ADVISORY: WILL BE ISSUED BY 20260225/2145Z

The Vanuatu Meteorology and Geo-Hazards Department-Vanuatu Geohazards Observatory (VMGD-VGO) reported that the eruption continued at Ambae on 24 February 2026 (local). The alert level remained at „3 – Minor Eruption“ (on a 0–5 level scale).
Source: Vanuatu Meteorology and Geo-Hazards Department-Vanuatu Geohazards Observatory (VMGD-VGO)

Current Alerts:
Observatory alert level: „3 – Minor Eruption“ (on a 0–5 level scale)
Aviation Alert Level: unavailable or not collected

Adapted from: Smithsonian / USGS Daily Volcanic Activity Report for Feb 24, 2026

Daily mean temperature of Te Wai ā-moe (Ruapehu Crater Lake) since 2010 (image: GNS Science/GeoNet)

In late 2025, volcanologists noted that the temperature of Te Wai ā-moe had increased to around 17 °C.
Based on previous temperature patterns, we anticipated that it would continue rising. Instead, the lake temperature has fluctuated between approximately 14 and 19 °C. While this represents some variation, it is relatively minor and falls within the range observed over the past 16 years. Recent data suggests that the inflow of hotter fluids has decreased over the last few months. Similar patterns were recorded in 2012–13, 2014, 2019, and 2022.

Although the current inflow of hot fluid beneath the lake is relatively low, sulfur dioxide (SO₂) emissions remain at typical levels, indicating that the hydrothermal system is still open. Volcanic tremor activity continues to be weak. Taking all monitoring data into account, we assess the present activity as low-level and consistent with minor volcanic unrest. Accordingly, the Volcanic Alert Level remains at 1, and the Aviation Colour Code stays at Green.

The Volcanic Alert Level indicates the current state of volcanic unrest. It is not intended to predict future volcanic activity.

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

FVAU03 at 21:31 UTC, 24/02/26 from ADRM
VA ADVISORY
DTG: 20260224/2130Z
VAAC: DARWIN
VOLCANO: AMBAE 257030
PSN: S1523 E16750
AREA: VANUATU
SOURCE ELEV: 1496M AMSL
ADVISORY NR: 2026/4
INFO SOURCE: VAAC WELLINGTON
ERUPTION DETAILS: UNKNOWN
OBS VA DTG: NOT PROVIDED
OBS VA CLD: NOT PROVIDED
FCST VA CLD +6 HR: 25/0330Z NOT PROVIDED
FCST VA CLD +12 HR: 25/0930Z NOT PROVIDED
FCST VA CLD +18 HR: 25/1530Z NOT PROVIDED
RMK: PLEASE SEE FVPS01 NZKL 242101 ISSUED BY VAAC WELLINGTON
WHICH DESCRIBES CONDITIONS NEAR THE VAAC DARWIN AREA OF
RESPONSIBILITY.
NXT ADVISORY: NO LATER THAN 20260225/0330Z=