Planet Observation Station

A satellite map for analyzing wildfires and environmental changes. Explore dated imagery and detected hotspots.

Observation map

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Questions and answers

What does the observation station show?
The map lets you view satellite imagery for a selected date and turn on detected heat points. Images can show clouds, smoke, water, vegetation, and large changes on the ground. Find a place, zoom in, and switch layers to examine it in different ways.

This is not a continuous live video feed. A satellite images an area during an overpass; the image is then processed and made available on the map. If you are investigating an event, compare an image from before it with a later one and check whether clouds obscure the area.
What do the fire points on the map mean?
A point marks an area where a satellite sensor detected increased heat. It is not the boundary of a fire, the area burned, or the exact location of flames on the ground. Nearby points may belong to the same event. An empty map does not prove there is no fire: clouds, dense smoke, tree cover, and gaps between satellite overpasses can prevent detection.

High, nominal, and low are algorithm-assigned detection quality categories. They are not a percentage probability of fire or a measure of danger to people. FRP is measured in megawatts and describes the radiative power of the detected area at the time of observation. A single FRP value cannot tell you the area burned. Compare the points with imagery and reports from the ground.
How do I find a place and compare images?
Enter a town or region in the search field and select the right result. If several places share a name, check its position on the map. To compare images fairly, keep the same zoom level and layer, change the date, and look at the same area.

Changing the date changes the satellite image. It does not select a historical set of heat points: the fire panel shows detections available at the time of your request within the visible map area. Do not treat an older image and current points as observations from the same day. Also account for clouds, lighting, and seasonal changes in vegetation.
Why switch satellite layers?
Some layers show Earth in colors close to an ordinary photograph. Others combine measurements from visible and infrared bands and assign colors to them on the image. These spectral band combinations can help distinguish water, snow, vegetation, and areas affected by fire that may look alike in a standard image.

The displayed color does not necessarily match the actual color of the ground. The same place can look different in different layers. Check the layer name first, then compare the area in another layer and on nearby dates. A bright patch alone does not confirm a fire or logging.
Why is one image not enough to draw a conclusion?
An image shows the surface and atmosphere only at the time it was taken. A cloud may hide a forest, a shadow may change the appearance of a site, and seasonal vegetation changes may look sudden. Small details cannot be resolved at every zoom level.

Compare several dates and layers. Check whether a change appears again and remains in the same position. Satellite observation helps identify where to look more closely, but it cannot establish the cause of a change or who is responsible for it. That requires information from the ground and supporting records.
How can I prepare a regional update?
Start with a specific place and image date. Record the area, coordinates, the selected layer, and what is visible. If heat points are on, separately note when the fire panel was updated, how many points are shown, and which filters are applied. Save a map screenshot so others can review the observation.

Do not confuse the date of the satellite image with the time of the heat detections; they update independently. Separate observations from assumptions. For example, “smoke is visible in the image” is more accurate than claiming a cause or burned area without checking. If people are in danger, contact emergency services promptly rather than waiting to publish an update.
How can I check a possible logging site or fire?
Find an image of the area before the suspected event and a later image. Compare the same place at a similar zoom level, using the same layer where possible. Check nearby dates: clouds and shadows can hide part of an image, while a change of season can alter a forest's color without logging.

If the change persists, record the coordinates, dates, and layer name. Compare the images with heat detections, local reports, photographs from the ground, and available official information. The map can show why a site needs checking, but it cannot by itself prove that a fire, logging, or a violation occurred.
Why didn't the image load or why are there black stripes visible?
If the layer is empty, check your connection, select a different date or layer, and refresh the page. Sometimes the data source is temporarily unavailable, or the image for the selected day is still being processed. Additionally, for some countries, using a VPN might be necessary due to blocks and international restrictions.

Black stripes on some MODIS images are areas not covered by the swaths of adjacent satellite passes. Try using the VIIRS layer or a different day. White areas might be clouds, snow, or missing data: compare neighboring dates and another layer before drawing conclusions about the territory's condition.

Created by ThePashkov

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