Semeru
FVAU02 at 22:51 UTC, 15/03/26 from ADRM
VA ADVISORY
DTG: 20260315/2255Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/305
INFO SOURCE: HIMAWARI-9, CVGHM, WEBCAM
ERUPTION DETAILS: VA TO FL170 LAST REPORTED AT 15/1840Z
EST VA DTG: 15/2230Z
EST VA CLD: SFC/FL170 S0807 E11248 - S0758 E11253 - S0804
E11317 - S0816 E11319 - S0824 E11307 MOV SE 05KT
FCST VA CLD +6 HR: 16/0430Z SFC/FL150 S0807 E11250 - S0801
E11251 - S0801 E11317 - S0810 E11317 - S0818 E11307
FCST VA CLD +12 HR: 16/1030Z SFC/FL150 S0811 E11251 - S0805
E11249 - S0749 E11308 - S0802 E11317
FCST VA CLD +18 HR: 16/1630Z SFC/FL150 S0811 E11252 - S0806
E11249 - S0756 E11252 - S0748 E11303 - S0758 E11314 - S0808
E11307
RMK: VA NOT IDENTIFIABLE ON LATEST SATELLITE IMAGERY DUE TO
MET CLOUD. INTERMITTENT DISCRETE VA EMISSIONS BELIEVED TO BE
ONGOING. VA HEIGHT AND MOVEMENT BASED ON GROUND REPORTS AND
MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260316/0455Z=
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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