News & activity updates:

Bromo Volcano Volcanic Ash Advisory: VA OBS TO FL100 EXT TO NE AT 26/0000Z. to 10000 ft (3000 m)

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 10000 ft (3000 m) altitude or flight level 100 and is moving at 5 kts in NE direction.
The full report is as follows:

FVAU03 at 00:35 UTC, 26/04/19 from ADRM
VA ADVISORY
DTG: 20190426/0035Z
VAAC: DARWIN
VOLCANO: TENGGER CALDERA 263310
PSN: S0757 E11257
AREA: INDONESIA
SUMMIT ELEV: 2329M
ADVISORY NR: 2019/107
INFO SOURCE: HIMAWARI-8, CVGHM
AVIATION COLOUR CODE: ORANGE
ERUPTION DETAILS: VA OBS TO FL100 EXT TO NE AT 26/0000Z.
OBS VA DTG: 26/0035Z
OBS VA CLD: SFC/FL100 S0759 E11257 - S0756 E11253 - S0744
E11259 - S0749 E11312 - S0759 E11307 MOV NE 5KT
FCST VA CLD +6 HR: 26/0635Z SFC/FL100 S0759 E11250 - S0748
E11249 - S0742 E11303 - S0750 E11314 - S0805 E11305
FCST VA CLD +12 HR: 26/1235Z SFC/FL100 S0800 E11250 - S0748
E11249 - S0742 E11259 - S0753 E11314 - S0806 E11305
FCST VA CLD +18 HR: 26/1835Z SFC/FL100 S0804 E11251 - S0751
E11248 - S0744 E11300 - S0752 E11310 - S0806 E11309
RMK: CVGHM REPORT WEAK ASH EMISSION TO FL100 AT 26/0002Z
CONFIRMED ON WEBCAM. DIFFUSE PLUME OBS ON SAT IMAGERY EXT TO
NE. HEIGHT BASED ON CVGHM. FORECAST BASED ON MODEL GUIDANCE.
LOW CONFIDENCE IN FCST DUE TO LIGHT AND VARIABLE WINDS.
NXT ADVISORY: NO LATER THAN 20190426/0635Z

Background:

Gunung Bromo (Mount Bromo) volcano is a small, but active volcanic cinder cone on the Indonesian island of Java. Bromo is located in the center of the Sandsea Caldera, itself only a portion of the larger Tengger Caldera. The Sandsea caldera formed around 8,000 years ago, in what must have been a massive eruption. Subsequent volcanic activity formed the cluster of cinder cones in the caldera’s center, including Bromo.
The historical record indicates eruptions of Bromo every few years since 1804, and geologic evidence indicates eruptions at least several hundred years earlier. The most recent eruption occured in 2004, and tragically killed two tourists.

The image above shows most of the Sandsea Caldera, along with Gunung Bromo and the older volcanoes on the caldera floor. A small plume of steam is visible rising out of Mt. Bromo. Space Imaging’s IKONOS satellite, capable of 4-meter per-pixel color imagery, and 1-meter per-pixel resolution panchromatic imagery, acquired the data on July 8, 2001.