Sierra Leone — Natural Disaster Report
Africa · Live status: High (1 active event)
Current situation: 1 natural disaster event is currently monitored in Sierra Leone, with a worst severity of Severe. Details, sources and timestamps are listed below.
Sierra Leone's most severe recent disaster was the August 2017 Regent landslide on the outskirts of Freetown, when part of Sugar Loaf mountain collapsed after days of extreme rain and killed over 1,000 people. Rapid unplanned construction on deforested slopes above the capital remains the underlying risk. Flooding affects low-lying parts of Freetown each rainy season, and coastal erosion threatens fishing communities. Rainfall here is among the heaviest in West Africa.
Live map — Sierra Leone
Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.
Active alerts & recent events
Latest earthquakes
No events match these filters right now. Data syncs run continuously — check the live map or widen the filters.
Near a particular city? Earthquake history near a place · disasters reported near a place · compare Sierra Leone's earthquake record with another country.
Risk profile
Rainy season flooding and landslides June-October, peaking July-September. Coastal erosion year-round. Harmattan dust December-February. Storm surge on the coast.
Official emergency authorities
Disaster displacement in Sierra Leone
6,043 internal displacements
Largest single event: 4,000 from flood, beginning 31 August 2025.
A displacement is a movement, not a person: somebody forced from home more than once in a year is counted more than once. These are movements caused by disasters only — displacement caused by conflict is counted separately and is not included here.
| Year | Displacements |
|---|---|
| 2025 | 6,043 |
| 2024 | 1,131 |
Source: Internal Displacement Monitoring Centre (IDMC), Global Internal Displacement Database. IDMC publishes annually, so the latest year here is the latest they have finalised — not the current one.
What this site sees in Sierra Leone
| Source | Events here, last 12 months | What it will not tell you |
|---|---|---|
| ReliefWeb (UN OCHA) | 1 | Global, but it reports on humanitarian RESPONSE. It arrives days after an event rather than during it, and never functions as a warning. |
| GDACS (European Commission / United Nations) | none | Global, but deliberately selective: it alerts on disasters likely to need INTERNATIONAL response. Serious local flooding that a national agency handles alone will not appear here. |
| US Geological Survey | none | Global for earthquakes above roughly M4.5, and denser where there are more seismometers. It publishes nothing about any other hazard. |
| European-Mediterranean Seismological Centre | none | Global for earthquakes, with the best coverage in Europe and the Mediterranean. It publishes nothing about any other hazard. |
| NASA FIRMS | none | Global, but it sees only what the satellite saw on its pass, and thick cloud hides fire. A quiet day here is not evidence that nothing burned. |
| NASA EONET | none | Global and curated rather than automatic, so it is slower than the raw feeds and carries far fewer events. |
| WMO Alert Hub (national weather services) | none | Each warning comes from one country own alerting authority, so the scale is that agency scale and is not comparable between countries. Many agencies publish no coordinates, and those warnings are placed at the centre of the country rather than where the weather is - the area name is the real answer. |
| MeteoAlarm (EUMETNET) | none | Europe only. It publishes no coordinates at all, so every warning here is placed at the centre of its country and the area name is the only reliable indication of where it applies. |
| NOAA Tsunami Warning Centers | none | These two centres warn for the US and Canadian coasts and for the Pacific and Caribbean basins. The Indian Ocean and Mediterranean have their own warning centres, which are not read here. Their routine information statements - the ones that say there is NO tsunami danger - are deliberately not imported, so an empty tsunami list means no threat was issued, not that nothing was checked. |
| NOAA National Hurricane Center | none | The Atlantic and the eastern and central Pacific only. No typhoon in the western Pacific and no cyclone in the Indian Ocean or the southern hemisphere appears here; those come from GDACS and from national services. |
Not applicable here: US National Weather Service — Covers the United States only. It publishes nothing about any other country, so its absence from a country page is not an outage. ; USGS Volcano Hazards Program — United States volcanoes only - Alaska, Hawaii, the Cascades, Yellowstone, California and the Northern Mariana Islands. It says nothing about Indonesia, Iceland, Italy or anywhere else, so its silence about a foreign eruption is not a judgement about that eruption.
Frequently asked questions
What natural disasters are currently active in Sierra Leone?
There are currently 1 monitored natural disaster events in Sierra Leone. The overall risk status is High. See the live list on this page for details and sources.
What natural hazards does Sierra Leone face?
Sierra Leone's most severe recent disaster was the August 2017 Regent landslide on the outskirts of Freetown, when part of Sugar Loaf mountain collapsed after days of extreme rain and killed over 1,000 people. Rapid unplanned construction on deforested slopes above the capital remains the underlying risk.
When is the main natural disaster season in Sierra Leone?
Rainy season flooding and landslides June-October, peaking July-September. Coastal erosion year-round. Harmattan dust December-February. Storm surge on the coast. Seasons shift from year to year; treat these as the usual pattern, not a forecast.
Which official agency issues disaster warnings in Sierra Leone?
Official warnings for Sierra Leone are issued by National Disaster Management Agency. The link is on this page. This site aggregates and reports; it does not issue warnings, and in an emergency the national agency is the authority.
Where does this disaster data for Sierra Leone come from?
Data is aggregated from official sources including USGS, GDACS (EC/UN), NASA EONET, ReliefWeb and national agencies. Every event links to its original source, and update times are shown on each record.
Data sources: USGS, GDACS (EC/UN), NASA EONET, NOAA/NWS, EMSC, ReliefWeb (UN OCHA). See data sources & attribution and methodology. This page does not replace official emergency guidance.