Bangladesh — Natural Disaster Report
Asia · Live status: High (5 active events)
Current situation: 5 natural disaster events are currently monitored in Bangladesh, with a worst severity of Severe. Details, sources and timestamps are listed below.
Bangladesh is one of the most flood-exposed countries on Earth. Most of its territory is the delta where the Ganges, Brahmaputra and Meghna rivers meet before entering the Bay of Bengal, so it drains an enormous Himalayan catchment through a low, flat landmass barely above sea level. In an average monsoon a fifth of the country floods; in extreme years far more. The funnel shape of the Bay of Bengal amplifies cyclone storm surge, which is why the 1970 Bhola cyclone and the 1991 Chittagong cyclone each killed well over a hundred thousand people. Sustained investment in cyclone shelters, coastal embankments and community warning systems has since cut cyclone deaths dramatically, and Bangladesh is now widely studied as a model for early warning. Riverbank erosion displaces tens of thousands of people every year, and salt-water intrusion is steadily degrading coastal farmland.
Live map — Bangladesh
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
Near a particular city? Earthquake history near a place · disasters reported near a place · compare Bangladesh's earthquake record with another country.
By hazard in Bangladesh
Each of these has its own page: recent activity, the season it happens in, past events and what to do.
Risk profile
Monsoon river flooding June-September. Cyclones and storm surge April-May and October-November. Riverbank erosion year-round, worst during high flow. Heatwaves April-May. Tornadoes occur in the pre-monsoon months, unusually for the region.
Official emergency authorities
In season now in Bangladesh
-
Monsoon
— June to October
River flooding peaks when the Ganges, Brahmaputra and Meghna rise together. -
Bay of Bengal cyclones (post-monsoon)
— October to November
The second window, after the monsoon withdraws.
Seasons describe when a hazard is historically most likely, averaged over many years. They are not a forecast and say nothing about this week.
Hazard seasons
| Season | Months | Notes |
|---|---|---|
| Monsoon · now | June to October | River flooding peaks when the Ganges, Brahmaputra and Meghna rise together. |
| Bay of Bengal cyclones (pre-monsoon) | April to May | One of two windows. The deadliest storms on record have come in these months. |
| Bay of Bengal cyclones (post-monsoon) · now | October to November | The second window, after the monsoon withdraws. |
Disaster displacement in Bangladesh
105,169 internal displacements
Largest single event: 82,694 from flood, beginning 21 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 | 105,169 |
| 2024 | 2,401,634 |
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.
River flood forecast — Bangladesh
No chance of exceeding even its 2-year flood flow in this forecast.
GloFAS alert level: Inactive · Peak expected: in 11-14 days (on 2026-11-01) · forecast of 19 Oct 2026
No chance of exceeding even its 2-year flood flow in this forecast.
GloFAS alert level: Inactive · Peak expected: as currently ongoing · forecast of 19 Oct 2026
A 1% chance of exceeding its 2-year flood flow.
GloFAS alert level: Inactive · Peak expected: as currently ongoing · forecast of 19 Oct 2026
GloFAS forecasts are computer model output, published for information only. They are not a flood warning: only national and regional authorities issue flood warnings for their own area. A reporting point is a place on the model's river network, which may sit a few kilometres from the town it is named after. All 259 rivers →
Emergency numbers — Bangladesh
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999 — National emergency service
Toll-free from any mobile. Connects police, fire service or ambulance.
Last checked 4 September 2026. Numbers change and some are provincial rather than national. If one does not connect, use the authorities listed above.
What this site sees in Bangladesh
The Bangladesh Meteorological Department issues its own cyclone and flood warnings, and the Flood Forecasting and Warning Centre publishes river levels. This site ingests neither, so their warnings will not appear on this page. What reaches here for flooding is GDACS, which alerts on disasters likely to need international response.
| Source | Events here, last 12 months | What it will not tell you |
|---|---|---|
| NASA FIRMS | 70 | 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. |
| ReliefWeb (UN OCHA) | 3 | Global, but it reports on humanitarian RESPONSE. It arrives days after an event rather than during it, and never functions as a warning. |
| European-Mediterranean Seismological Centre | 2 | Global for earthquakes, with the best coverage in Europe and the Mediterranean. It publishes nothing about any other hazard. |
| 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. |
| 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.
Major historical disasters — Bangladesh
| Event | Type | Date | Fatalities |
|---|---|---|---|
| 1991 Bangladesh Cyclone | Hurricane / Cyclone / Typhoon | Apr 29, 1991 | 138,000 |
| 1970 Bhola Cyclone | Hurricane / Cyclone / Typhoon | Nov 12, 1970 | 300,000 |
| 1970 Bhola Cyclone | Hurricane / Cyclone / Typhoon | Nov 12, 1970 | 300,000 |
Frequently asked questions
What natural disasters are currently active in Bangladesh?
There are currently 5 monitored natural disaster events in Bangladesh. The overall risk status is High. See the live list on this page for details and sources.
What natural hazards does Bangladesh face?
Bangladesh is one of the most flood-exposed countries on Earth. Most of its territory is the delta where the Ganges, Brahmaputra and Meghna rivers meet before entering the Bay of Bengal, so it drains an enormous Himalayan catchment through a low, flat landmass barely above sea level.
When is the main natural disaster season in Bangladesh?
Monsoon river flooding June-September. Cyclones and storm surge April-May and October-November. Riverbank erosion year-round, worst during high flow. Heatwaves April-May. Tornadoes occur in the pre-monsoon months, unusually for the region. Seasons shift from year to year; treat these as the usual pattern, not a forecast.
Which official agency issues disaster warnings in Bangladesh?
Official warnings for Bangladesh are issued by Bangladesh Meteorological Department. 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.
What is the deadliest recorded natural disaster in Bangladesh?
Of the events documented on this site, the deadliest in Bangladesh is the 1970 Bhola Cyclone (1970), with around 300,000 deaths. Estimates range 300,000–500,000. This is drawn from documented records held here and is not a complete historical archive.
Where does this disaster data for Bangladesh 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.