Indonesia fire hotspots quadruple to 1,104 as haze disrupts 2,458 domestic flights

A fire hotspot is a point identified as unusually hot compared with its surroundings. It usually indicates an active fire or a recently burning area. Hotspots help authorities track fires across large, remote landscapes. The article uses hotspot totals to show how conditions changed in Indonesia, but it does not explain the detection method.

In established fire-monitoring practice, satellites detect heat through infrared instruments. A computer compares the signal with nearby land and flags an abnormally warm location. One hotspot is not necessarily one whole fire. A single large fire can create several points, while clouds, smoke, or timing can affect what satellites detect.

Indonesia recorded 1,104 hotspots yesterday, up from 270 on Saturday. Central Kalimantan accounted for 495, and West Kalimantan for 174. These readings guided firefighting priorities, aircraft deployment, and air-quality warnings. They are valuable indicators, but they do not precisely measure burned area or fire size.

Indonesia’s hotspot count rose by 834, from 270 on Saturday to 1,104 yesterday. That is more than four times the earlier total. The increase matters because hotspots signal expanding or newly detected fire activity. They also help show where firefighting resources and air-quality warnings are most urgently needed.

Central Kalimantan recorded the largest number, with 495 hotspots, up from 92. West Kalimantan followed with 174, up from 22. Together, the two provinces contributed 669 hotspots, or about three-fifths of the national total. South Sumatra added 51, while South Kalimantan recorded 19 and Jambi nine.

The sharp rise came despite ongoing firefighting operations. The Forestry Ministry said Central and West Kalimantan had experienced several days of relatively low readings before the jump. Riau remained at zero. Central Kalimantan faced very unhealthy and hazardous air, while several neighboring provinces had unhealthy conditions.

Smoke and haze disrupt air travel mainly by reducing visibility near airports and along flight paths. Dense pollution can make takeoffs, landings, and navigation less predictable. Airlines may therefore delay or cancel flights, divert aircraft to other airports, or turn them back when conditions become unsafe. These decisions protect passengers and crews while disrupting schedules.

Indonesia recorded 2,458 haze-affected scheduled domestic flights between Aug 11 and Oct 17. The disruptions included 1,080 delayed flights and 1,324 cancelled or postponed flights. Another 22 flights diverted to other airports, while six returned to their departure airports. Twenty-six flights were rescheduled earlier.

The figures show that haze affects more than the airport closest to a fire. Smoke can spread across provinces and create widespread operational problems. If fires continue, aviation disruption may persist or grow. The article provides the disruption totals, but it does not give specific visibility thresholds or explain individual flight decisions.

Central and West Kalimantan can face large forest and land fires because parts of the region contain extensive vegetation and peat soils that can dry and burn. Seasonal dryness makes ignition and spread easier. Human land clearing and other land-use activities can also increase fire risk. These causes are established background knowledge, not explanations provided in the article.

Peat and vegetation can hold heat and continue burning after surface flames appear smaller. Fire may spread below ground or through connected dry material, making it difficult to detect and extinguish quickly. Wind and dry weather can also move smoke across populated areas. The article focuses on the fire response rather than identifying specific ignition causes.

The Forestry Ministry named Central and West Kalimantan among six priority firefighting areas. Central Kalimantan had 495 hotspots, while West Kalimantan had 174. Air quality reached very unhealthy or hazardous levels in Central Kalimantan, showing why the provinces required sustained ground and aerial operations.

Indonesia’s Forestry Ministry is coordinating firefighting with joint teams, while the Transportation Ministry is reporting aviation effects. The Forestry Ministry said 61 aircraft remained deployed in Central and West Kalimantan. These resources support direct firefighting, surveillance, and efforts to improve weather conditions in priority areas.

Of the aircraft, 44 were assigned to water bombing and 17 to aerial patrols and weather modification operations. Water-bombing aircraft drop large amounts of water onto burning areas to reduce heat and slow flames. Patrol aircraft help observe fire locations and changing conditions. Weather modification operations generally aim to encourage rainfall, which can dampen fuels and assist suppression.

Teams are also working on the ground and carrying out prevention and control measures. Central and West Kalimantan are two of six priority areas, alongside South Sumatra, South Kalimantan, Jambi, and Riau. The article does not report how much these operations reduced fires, and hotspots still rose nationally to 1,104.

Hotspot numbers are measurements taken at particular times, not a continuous count of every burning area. Several days of low readings may reflect reduced visibility to monitoring systems, temporary weather changes, or fires burning in places that are difficult to detect. Firefighting can also suppress some areas without eliminating every active or smoldering fire.

Clouds and smoke can obscure heat from satellites, while rain or cooler conditions may temporarily weaken signals. Later, clearer skies, renewed burning, or a change in fire location can produce many detections at once. A hotspot also indicates detected heat, not necessarily a new fire. These are established limitations of hotspot monitoring; the article does not identify which factor caused this particular increase.

The Forestry Ministry said the sharp rises in Central and West Kalimantan followed several days of relatively low counts despite ongoing firefighting. Central Kalimantan rose from 92 to 495, and West Kalimantan from 22 to 174. Continued monitoring is therefore essential alongside ground and aerial response.

Peatlands are wetlands whose soils contain thick layers of partly decayed plants. When saturated, they store large amounts of water and carbon. If they dry, the organic soil can ignite. This makes peat fires different from ordinary surface fires because the heat may move through the ground rather than staying visible above it. The article does not mention peatlands specifically, so this is established background knowledge.

A peat fire can smolder slowly below the surface and reappear after flames seem extinguished. Water dropped from aircraft may cool the top layer without reaching every underground burning pocket. Smoke can continue rising from hidden fire, while dry vegetation above ground may ignite again. These features make peat fires persistent and difficult to locate and suppress.

The article reports prolonged forest and land fires, worsening haze, and very unhealthy to hazardous air in Central Kalimantan. It does not identify peat as the cause. Still, persistent underground burning is one established explanation for why fires can continue producing smoke despite ground teams, water bombing, patrols, and prevention measures.