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Kilauea volcano (Hawai’i): 55th lava fountaining episode likely to start soon

The 55th lava fountaining episode at Kilauea’s summit crater is imminent, the Hawaiian Volcano Observatory (HVO) reported:
„Precursory low-level activity for episode 55 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea began around 12:45 p.m. HST on September 7, 2026 with a sluggish overflow from the north vent. Accordingly, HVO is raising the Alert Level for Kīlauea from ADVISORY to WATCH and the Aviation Color Code from YELLOW to ORANGE.
„This low-level precursory activity can continue for hours to days before the lava fountaining episode beings. The forecast for episode 55 of lava fountaining to start is between September 7-10.“

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Ibu Volcanic Ash Advisory: ash plume to 7,000 ft (2,100 m) as of Sep 8, 01:20 UTC

Satellite image of Ibu volcano on 8 Sep 2026

Explosive activity continues. The Volcanic Ash Advisory Center (VAAC) Darwin warned of a volcanic ash plume rising to an estimated 7000 ft (2100 m), or flight level 070, and moving at 05 kts in N direction.
Original VAAC bulletin:

FVAU03 at 01:47 UTC, 08/09/26 from ADRM
VA ADVISORY
DTG: 20260908/0145Z
VAAC: DARWIN
VOLCANO: IBU 268030
PSN: N0129 E12738
AREA: INDONESIA
SOURCE ELEV: 1325M AMSL
ADVISORY NR: 2026/1018
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: ERUPTION LAST REPORTED AT 08/0017Z
OBS VA DTG: 08/0120Z
OBS VA CLD: SFC/FL070 N0127 E12739 - N0128 E12736 - N0142
 E12736 - N0143 E12743 - N0138 E12747 MOV N 05KT
FCST VA CLD +6 HR: 08/0720Z SFC/FL070 N0127 E12739 - N0127
 E12736 - N0147 E12733 - N0148 E12746 - N0139 E12753
FCST VA CLD +12 HR: 08/1320Z SFC/FL070 N0127 E12739 - N0128
 E12736 - N0148 E12738 - N0146 E12749 - N0138 E12755
FCST VA CLD +18 HR: 08/1920Z SFC/FL070 N0128 E12738 - N0129
 E12736 - N0148 E12738 - N0146 E12749 - N0138 E12755
RMK: INTERMITTENT DISCRETE ERUPTION IDENTIFIABLE ON
 SATELLITE IMAGERY. VA HEIGHT AND FCST BASED ON GROUND
 REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260908/0745Z=
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Semeru Volcano Volcanic Ash Advisory: ERUPTION LAST REPORTED 07/1335Z EST VA DTG: 07/1740Z

Satellite image of Semeru volcano on 7 Sep 2026

The Volcanic Ash Advisory Center (VAAC) Darwin issued the following bulletin.
Original VAAC bulletin:

FVAU02 at 17:56 UTC, 07/09/26 from ADRM
VA ADVISORY
DTG: 20260907/1800Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/1025
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: ERUPTION LAST REPORTED 07/1335Z
EST VA DTG: 07/1740Z
EST VA CLD: SFC/FL150 S0803 E11252 - S0801 E11318 - S0812
 E11320 - S0822 E11312 - S0808 E11251 MOV SE 05KT
FCST VA CLD +6 HR: 07/2340Z SFC/FL150 S0806 E11250 - S0801
 E11254 - S0806 E11319 - S0820 E11317 - S0826 E11305
FCST VA CLD +12 HR: 08/0540Z SFC/FL150 S0806 E11250 - S0801
 E11254 - S0806 E11319 - S0820 E11317 - S0826 E11305
FCST VA CLD +18 HR: 08/1140Z SFC/FL150 S0806 E11250 - S0801
 E11254 - S0806 E11319 - S0820 E11317 - S0826 E11305
RMK: VA UNIDENTIFIABLE ON SATELLITE IMAGERY DUE TO MET
 CLOUD. GROUND REPORTS INDICATE ONGOING DISCRETE EMISSIONS.
 VA HEIGHT AND FORECAST BASED ON PAST SATELLITE IMAGERY,
 GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260908/0000Z=