Volcanic Ash Advisory

Semeru

Sun, 08 Mar 2026 03:20:00 GMT

Raw Output

FVAU02 at 03:15 UTC, 08/03/26 from ADRM
VA ADVISORY
DTG: 20260308/0320Z
VAAC: DARWIN
VOLCANO: SEMERU 263300
PSN: S0806 E11255
AREA: INDONESIA
SOURCE ELEV: 3657M AMSL
ADVISORY NR: 2026/271
INFO SOURCE: CVGHM, HIMAWARI-9
ERUPTION DETAILS: ERUPTION LAST REPORTED AT 08/0127Z
EST VA DTG: 08/0300Z
EST VA CLD: SFC/FL150 S0805 E11254 - S0759 E11314 - S0812
        E11314 - S0808 E11254 MOV E 20KT
FCST VA CLD +6 HR: 08/0900Z SFC/FL150 S0805 E11254 - S0759
        E11314 - S0812 E11314 - S0808 E11254
FCST VA CLD +12 HR: 08/1500Z SFC/FL150 S0805 E11254 - S0759
        E11314 - S0812 E11314 - S0808 E11254
FCST VA CLD +18 HR: 08/2100Z SFC/FL150 S0805 E11254 - S0759
        E11314 - S0812 E11314 - S0808 E11254
RMK: VA NOT IDENTIFIABLE ON LATEST SATELLITE IMAGERY DUE TO
        MET CLOUD COVER. RECENT GROUND REPORTS INDICATE ONGOING
        INTERMITTENT ERUPTIONS. VA HEIGHT AND MOVEMENT ESTIMATED
        FROM CVGHM GROUND REPORTS AND MODEL GUIDANCE.
NXT ADVISORY: NO LATER THAN 20260308/0920Z=

Analysis

Detailed Report

**Volcanic Ash Advisory Report — Semeru Volcano** --- **Date & Time:** March 8, 2026, at 03:20 UTC (08:20 AM Australian Eastern Time) --- **Event Summary:** Semeru Volcano in Indonesia has been erupting intermittently. Volcanic ash is currently visible at low to mid-altitudes, with movement and height estimated based on ground reports and satellite data. Ash is not clearly visible on the latest satellite imagery due to cloud cover. --- **Volcanic Ash Height:** - **Current height:** From ground level (SFC) up to **FL150** (15,000 feet above mean sea level). - **Location:** - East: 112°55′E, 08°06′S - West: 113°14′E, 07°59′S - North: 08°12′S, 113°14′E - South: 08°08′S, 112°54′E --- **Ash Movement & Direction:** - **Current movement:** Moving **east** at **20 knots** (about 23 mph or 37 km/h). - **Forecast movement (for next 18 hours):** - **+6 hours (0900Z):** Same movement pattern. - **+12 hours (1500Z):** Same. - **+18 hours (2100Z):** Same. --- **Forecast Ash Dispersion:** - Ash will remain at **low to mid-altitudes (SFC to FL150)** for the next 18 hours. - No significant change in direction or height expected. - Movement remains **eastward**. --- **Important Notes:** - Ash is **not visible** on the latest satellite imagery due to cloud cover. - Ash plume is being tracked using **ground reports** and **model guidance** from CVGHM and Himawari-9. - **Ongoing eruptions** are confirmed by ground observations. - **No ash plume is currently visible** on satellite imagery — this is normal during heavy cloud cover. --- **Next Update Information:** Next advisory will be issued **no later than 0920Z on March 8, 2026** (03:20 AM Australian Eastern Time). --- *Note: This report is based solely on official Volcanic Ash Advisory data. No speculation, opinion, or extrapolation has been added.*

Summary

Semmeru volcano in Indonesia erupted, sending ash to 1500 feet above ground, moving east at 20 knots. Ash cloud remains at that height for at least 18 hours. Last reported eruption at 0127Z. No later advisory expected until 0920Z.

Semeru

Indonesia

Level 4

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.

View Full Volcano Details