How long did the Hon Dat fire last?

GWIS (Copernicus) dates it between 13 April 2026 and 20 April 2026: 8 days between the first and last heat detection of the perimeter.

How much area did it burn?

The perimeter GWIS (Copernicus) rebuilt from heat detections is 1,123 hectares (11.2 km²). It is an estimate: official national figures may differ.

Which municipalities burned?

The fire entered 2 municipalities: Hon Dat (1,076 ha, 1.0 %); Tri Ton (54 ha, 0.1 %).

Where does this data come from?

From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Vietnam (geoBoundaries). It is not an official report.

VN · Vietnam · 2026-04-13 → 2026-04-20

Hon Dat fire, 13 April 2026 Hon Dat, Tri Ton

Out · last detection 19 Apr 2026, 06:35 UTC

The fire started on 13 April 2026 in Hon Dat, Vietnam, and satellites saw it burning for 8 days. Copernicus’s global GWIS system rebuilt a burnt perimeter of 1,123 hectares from heat detections, spread across 2 municipalities.

It is the 20th largest in Kiên Giang since 2016 (of 23 with a page). Number 79 in Vietnam in 2026, of 97.

The power measured by the satellite is low (10.9 MW in the strongest hotspot), more typical of grass or stubble burning, or a slow surface fire, than of a large crown fire.

Burnt area: 1,123ha; GWIS perimeter (Copernicus)
Duration: 8days; 13 Apr 2026 – 20 Apr 2026
Municipalities hit: 2; districts
Started on: 13 Apr; 2026
Heat detections: 18; in a single hotspot: 11 MW
Energy released: 53MW; sum of detected power

Play back 19 Apr 2026

HOTSPOTS BY DAY 13 Apr20 Apr

How it evolved, day by day

13141819

Fire radiative power detected each day, in megawatts, and number of hotspots. The magenta bar marks the peak day.

This area had burned before

No earlier perimeters overlap this fire since 2016, when the satellite record begins.

What happened to each town

Hon Dat where it started

1,076 ha reached on 8 Apr

1.0 %
Tri Ton

54 ha reached on 11 Apr

0.1 %

Burnt area inside each municipality, from crossing the GWIS perimeter with administrative boundaries. The distance is from the town centre to the nearest fire: staying a kilometre away does not mean it reached the houses.

Before and after, from space

Drag the line to compare the same ground before the fire and after it.

↔

Before · 6 Apr 2026

After · 27 Apr 2026

Before After

If the day is cloudy, change the date: each satellite passes once a day. In false colour the burnt ground looks brown or red.

The smoke

CAMS · Copernicus

On 18 April 2026 the air beside the fire reached 98 µg/m³ of PM2.5. That day averaged 43: 2.9 times the WHO daily guideline (15).

PM2.5 peak98 µg/m³

Days over the guideline13 days

PM10102 µg/m³

Optical depth1.03

WHO 15

11121314151617181920212223

Good Fair Moderate Poor Very poor Extremely poor

Particles from the Copernicus CAMS model at the centre of the perimeter; these are not measurements in each town. The pale bar is the worst hour, the solid one the daily average.

Open-Meteo.com (CC BY 4.0) · Copernicus Atmosphere Monitoring Service (CAMS)

Detections table · 18Every satellite heat detection, one by one, with time, satellite, power and coordinates.

⬇ Download CSV Times in UTC. Each detection is a 375 m pixel: a large fire yields hundreds per pass.

Date and time	Satellite	FRP (MW)	Lat	Lon

Other fires nearby

All fires in Vietnam ›

Frequently asked questions

How long did the Hon Dat fire last?: GWIS (Copernicus) dates it between 13 April 2026 and 20 April 2026: 8 days between the first and last heat detection of the perimeter.
How much area did it burn?: The perimeter GWIS (Copernicus) rebuilt from heat detections is 1,123 hectares (11.2 km²). It is an estimate: official national figures may differ.
Which municipalities burned?: The fire entered 2 municipalities: Hon Dat (1,076 ha, 1.0 %); Tri Ton (54 ha, 0.1 %).
Where does this data come from?: From the GWIS (Copernicus) burnt perimeter, NASA FIRMS VIIRS hotspots and the administrative boundaries of Vietnam (geoBoundaries). It is not an official report.

Where to verify it

A satellite detection is not an official report. Final figures and the fire’s status are published by each country’s emergency service.

Emergency number: 114

Satellite cross-check

NASA FIRMS ↗
GWIS · Copernicus ↗

Does something look wrong on this page?

This page is built from satellite data and official records, and it sometimes gets things wrong: the wrong dates, the wrong town, two fires merged into one, or something that was not a wildfire at all. If you know this fire first-hand (you live nearby, saw it, fought it or reported on it), tell us what really happened and we will check it.

Report an error

What do you think is wrong?

Dates or duration Place or towns Burned area Name It was not a wildfire Same fire as another page Something else

What really happened?

Your connection to the fire (optional) Email (optional)

We will only use your email to reply about this report. Privacy. This is not an emergency service: if there is a fire now, call 114.

Where this data comes from

The perimeter comes from the Copernicus Global Wildfire Information System (GWIS), which rebuilds it from MODIS and VIIRS heat detections and publishes it under CC BY 4.0. It is not measured on imagery as in Europe, so it is an estimate. Heat detections come from the VIIRS sensors aboard Suomi-NPP and NOAA-20, distributed by NASA FIRMS at 375 m resolution. Municipal boundaries come from geoBoundaries ADM2 (Creative Commons Attribution 3.0 Intergovernmental Organisations (CC BY 3.0 IGO)). The area per municipality is computed by WorldFires by crossing the perimeter with those boundaries, so it may differ from each country’s official figure.

Where it burned