Flash Floods in Malaysia
Flood
How the score is calculated
The score starts at 8. It adds points from recorded affected, deaths, displaced and casualty counts, plus terms found in the story title, event type or status. For each count, only its highest matching band is used.
- Affected people
- 1–999: +5 · 1,000–9,999: +12 · 10,000–99,999: +20 · 100,000–999,999: +28 · 1 million+: +35
- Deaths
- 1–9: +8 · 10–99: +14 · 100–999: +22 · 1,000+: +30
- Displaced people
- 1–9,999: +6 · 10,000–99,999: +12 · 100,000+: +18
- Casualties
- 100 or more: +8
- Story wording
- +10 for terms such as catastrophe, famine, war, conflict, major earthquake, mass casualty or critical. Otherwise, +5 for active, ongoing, emergency, outbreak, cyclone or hurricane.
Score bands: Watch 0–24 · Moderate 25–49 · High 50–74 · Critical 75–100. Scores are capped at 100. Missing or unparseable figures add no points.
This is a rule-based WorldsAid triage indicator, not an official or independently validated classification. It does not account for recency or local context, and it can understate events with incomplete reporting. Check the linked sources.
Historical record
Status: CLOSED · Imported 2026-10-07
Closed for this historical import at the site owner’s request; not a new assessment of current conditions.
In brief
- What happenedYan District in Kedah State was faced with a flash flood from the foothill of Mount Jerai (Gunung Jearai).
- How many affectedAffected persons: 4,395
- What help is neededThe heavy downpour causes a water surge and landslides on Gunung Jerai that later hit Yan, Kuala Muda, Bandar Baharu dist
What changed
First retained snapshot
No earlier verified snapshot is present in the recovered dataset. This record remains available as the historical baseline.
Situation
Yan District in Kedah State was faced with a flash flood from the foothill of Mount Jerai (Gunung Jearai). The flash flood happens on Wednesday 18th of August 2021 at 5.30 pm (Local Malaysian Time). The heavy downpour causes a water surge and landslides on Gunung Jerai that later hit Yan, Kuala Muda, Bandar Baharu dist
Linked charities and agencies
WorldsAid verification
A WorldsAid editor reviewed this record against the retained source record, cleaned feed formatting and checked the crisis, place and reporting date. 1 human-impact figure was separated from the narrative and dated where the source allowed. Earlier observations remain in the evidence history instead of being silently overwritten.
Verified figures
- Affected persons
- 4,395 retained at 2021-08-26
What we knew when
- WorldsAid record entered the retained historical dataset.
- Last verification represented by this immutable snapshot.
Earlier figures are never replaced by later values; additional observations are retained as new ledger entries.
Provenance
This page renders the last verified WorldsAid cache directly in HTML. It does not treat generated summaries as primary evidence.
Cached dataset: worldsai_drup771.sql.gz
Verified
SHA-256 12c187eac882f9c8232aea1257f9a9bf424f0d1c48f405a0cea8e4b7fee898f9No external source link was stored for this record.