Merapi Volcano Phreatic Eruption,Central Java Province, Indonesia

Flash Update No. 04

FRIDAY25 MAY 2018

10:00 UTC+7

DATA SOURCES

AHA Centre Disaster Monitoring & Response System (DMRS);

Pacific Disaster Center (PDC Global); National Disaster

Management Authority of Indonesia (BNPB); Centre of

Volcanology and Geological Hazard Mitigation of Indonesia;

Meteorological (PVMBG), InaRISK, Magma Indonesia,

Meteorological, Climatological, and Geophysical Agency

(BMKG)

© 2018 AHA Centre.

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1. According to InaRISK, a total of 4 districts (total

of 28 sub-districts) in 2 provinces will be affected

(in maps on next page:

11 sub-districts of populace up to 22,000

are located in high vulnerability areas

28 sub-districts of populace up to 14,955

are located in medium vulnerability areas

2. Past hazards associated with Mt Merapi include:

Rock fall

Pyroclastic and Lahar flow

Lava flow

Ash fall

Volcanic earthquake

3. PVMBG raised to ALERT Level 2 (on a scale of

1-4) for Mount Merapi after the unsteady

eruption.

4. Eruption with ash cloud is around 4468m above

sea level at 24 May 2018, 1048 hrs UTC +7

(VONA status: Orange, correct as of 24 May

2018 1057 UTC+7).

5. Maps comprising of Normalised Built-up Index

(NDBI) and Normalised Density Vegetation

Index (NDVI) provides a better idea of the

densely built up areas and densely vegetated

areas (darker colours indicate higher density)

6. Stay tuned to BNPB’s Facebook Page for more

details.

A section of a map of Merapi detailing lahars and related

drainage systems (blue lines). The bounding color areas around

the lahars represent associated hazard zones with risk levels

ranging from yellow to red (least risk to most). Portions of

concentric red, orange, and yellow circles mark the radial

distance from Merapi's summit in kilometers. Courtesy of BNPB

DISCLAIMER

The AHA Centre was established in November 2011 by the

Association of Southeast Asian Nations (ASEAN) Member States

to facilitate cooperation and coordination among Member States,

relevant agencies of the United Nations and international

organisations in disaster management and humanitarian

assistance.

The use of boundaries, geographic names, related information

and potential considerations for response are for reference, not

warranted to be error free or implying official endorsement from

ASEAN Member States.

Merapi Volcano Phreatic Eruption,Central Java Province, Indonesia

Flash Update No. 04

FRIDAY25 MAY 2018

10:00 UTC+7

DATA SOURCES

AHA Centre Disaster Monitoring & Response System (DMRS);

Pacific Disaster Center (PDC Global); National Disaster

Management Authority of Indonesia (BNPB); Centre of

Volcanology and Geological Hazard Mitigation of Indonesia;

Meteorological (PVMBG), InaRISK, Magma Indonesia,

Meteorological, Climatological, and Geophysical Agency

(BMKG)

© 2018 AHA Centre.

All rights reserved.

You are receiving this email

because you are registered

in our distribution list.

Our mailing address is:

AHA Centre,

GRAHA BNPB 13th Floor,

Jl. Raya Pramuka Kav. 38,

Jakarta 13120 Indonesia

DISCLAIMER

The AHA Centre was established in November 2011 by the

Association of Southeast Asian Nations (ASEAN) Member States

to facilitate cooperation and coordination among Member States,

relevant agencies of the United Nations and international

organisations in disaster management and humanitarian

assistance.

The use of boundaries, geographic names, related information

and potential considerations for response are for reference, not

warranted to be error free or implying official endorsement from

ASEAN Member States.