9 April 2020 PRELIMINARY SATELLITE-DERIVED DAMAGE ASSESSMENT

Nusa Tenggara Timur Province,

Status: Mudflow and flood water detected

Further action(s): continue monitoring INDONESIA

Nusa Tenggara Timur

2 Nusa Tenggara Timur

AOI 1 AOI 2 AOI 3 Timur Alor

Flores island

Timor island Sawu island

Raijua island

Rote island

3 AOI 1 Mud flow in Timur, Flores Timur district, Nusa Tenggara Timur

Mud Flow

Mud Flow

Affected Village

Mud Flow

Affected Agricultural Area Affected Village Flores Timur

Image center: 08°22'37.2“ S 123°06'07.6“ 500 m. E Sentinel-12/06/20202 satellite image acquired on 8 Apr 2021 4 4 Flores Timur Image center: AOI 1 Adonara Timur, Flores Timur District, 08°23'34.5“ S Nusa Tenggara Timur Province 123°03'38.4“ E

AFTER BEFORE

Mud Flow

Affected Village

300 m.

Sentinel-2 satellite image acquired on 8 Apr 2021 Sentinel-2 satellite image acquired on 24 Mar 2021

5 Flores Timur Image center: AOI 1 Adonara Timur, Flores Timur District, 08°22'49.5“ S Nusa Tenggara Timur Province 123°09'42.2“ E

AFTER BEFORE

Mud Flow

Affected Village

300 m.

Sentinel-2 satellite image acquired on 8 Apr 2021 Sentinel-2 satellite image acquired on 14 Mar 2021

6 Flores Timur Image center: AOI 1 Adonara Timur, Flores Timur District, 08°23'02.9“ S Nusa Tenggara Timur Province 123°06'07.1“ E

AFTER BEFORE

Mud Flow

Affected Agricultural Area

300 m. 300 m.

Sentinel-2 satellite image acquired on 8 Apr 2021 Sentinel-2 satellite image acquired on 14 Mar 2021

7 AOI 2 Mud flow in IIe Ape, Lembata district, Nusa Tenggara Timur

Mud Flow

Affected Village

Affected Village Mud Flow Affected Village

Mud Flow

Lembata

Mud Flow

Affected Agricultural Area Image center: 8°17’02.8“S 123°30'08.4"E 500 m. Sentinel-2 satellite image acquired on 8 Apr 2021 8 8 Image center: AOI 2 IIe Ape, Lambata District, 8°18'03.5“ S 123°31'22.1“ E Nusa Tenggara Timur Province Lembata

AFTER BEFORE

Mud Flow

Potentially Affected Village Affected Agricultural Waipoekang Area

300 m.

Sentinel-2 satellite image acquired on 8 Apr 2021 Sentinel-2 satellite image acquired on 24 Mar 2021

9 Image center: AOI 2 IIe Ape, Lambata District, 08°16'06.0“ S 123°28'11.6"E Nusa Tenggara Timur Province Lembata

AFTER BEFORE Affected Village

Mud Flow

Affected Village

Affected Village Mud Flow

Mud Flow

300 m.

Sentinel-2 satellite image acquired on 8 Apr 2021 Sentinel-2 satellite image acquired on 24 Mar 2021

10 AOI 2 Mud flow in Omesuri, Lembata district, Nusa Tenggara Timur Lembata

Mud Flow Mud Flow

Mud Flow

Potentially Affected Village

Mud Flow

Mud Flow Mud Flow

Affected Agricultural Area

Image center: 8°20'03.5"S 123°42'30.6"E

300 m.

Sentinel-2 satellite image acquired on 8 Apr 2021 11 11 AOI 3 Mud flow in Pantar Timur, Alor district, Nusa Tenggara Timur

Alor

Mud Flow

Mud Flow

Mud Flow

Affected Village

Affected Village

Image center:

8°22'13.8"S 124°13'56.1"E

300 m.

Sentinel-2 satellite image acquired on 8 Apr 2021 12 12 Image center:

AOI 3 Pureman, Alor District, 8°22'03.4"S 124°50'07.2"E Nusa Tenggara Timur Province Alor

AFTER BEFORE

Mud Flow

Mud Flow

Affected Village

300 m.

Sentinel-2 satellite image acquired on 8 Apr 2021 Sentinel-2 satellite image acquired on 24 Mar 2021

13 SUMMARY OF FINDINGS

• Multiple mudflows observed in Flores Timur [AOI1], Lambata [AOI2] and Alor [AOI3] districts as of 8 April 2021

• Several villages along the river in AOI 1 - 3 were affected by the mud flow as of 8 April 2021

• Partially agricultural areas were observed in AOI 1 and 2 as of 8 April 2021

14 COPYRITHS AND SOURCES

Data sources:

(1) Satellite Image [Post-event] Sentinel-2 acquired on 8 Apr 2021 Contains modified Copernicus Sentinel data [2021]

(2) Satellite Image [Pre-event] Sentinel-2 acquired on 14 and 24 Mar 2021

(3) Ancillary data Administrative boundaries : Badan Pusat Statistik / OCHA ROAP Source : HDX •

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