Semeru
FVAU02 at 10:46 UTC, 14/08/26 from ADRM
VA ADVISORY
DTG: 20260814/1050Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/925
INFO SOURCE: HIMAWARI-9, CVGHM
ERUPTION DETAILS: ERUPTION REP AT 14/0947Z
EST VA DTG: 14/1030Z
EST VA CLD: SFC/FL150 S0821 E11250 - S0805 E11236 - S0745
E11245 - S0745 E11307 - S0814 E11313 MOV N 05KT
FCST VA CLD +6 HR: 14/1630Z SFC/FL150 S0817 E11310 - S0823
E11244 - S0802 E11230 - S0739 E11249 - S0749 E11312
FCST VA CLD +12 HR: 14/2230Z SFC/FL150 S0820 E11254 - S0815
E11226 - S0741 E11232 - S0746 E11310 - S0806 E11314
FCST VA CLD +18 HR: 15/0430Z SFC/FL150 S0814 E11309 - S0824
E11229 - S0754 E11222 - S0733 E11245 - S0801 E11311
RMK: VA NOT IDENTIFIABLE ON LATEST SAT IMG. RECENT GND REPS
AND SAT OBS CONFIRM ONGOING DISCRETE VA EMISSIONS. VA HEIGHT
AND MOVEMENT BASED ON SAT IMG, GND REPS AND MODEL GUIDANCE.
UNCERTAIN FCST DUE TO LIGHT AND VRB WINDS.
NXT ADVISORY: NO LATER THAN 20260814/1650Z=
Semeru
Semeru, the highest volcano on Java, and one of its most active, lies at the southern end of a volcanic massif extending north to the Tengger caldera. The steep-sided volcano, also referred to as Mahameru (Great Mountain), rises above coastal plains to the south. Gunung Semeru was constructed south of the overlapping Ajek-ajek and Jambangan calderas. A line of lake-filled maars was constructed along a N-S trend cutting through the summit, and cinder cones and lava domes occupy the eastern and NE flanks. Summit topography is complicated by the shifting of craters from NW to SE. Frequent 19th and 20th century eruptions were dominated by small-to-moderate explosions from the summit crater, with occasional lava flows and larger explosive eruptions accompanied by pyroclastic flows that have reached the lower flanks of the volcano.
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