Satellite

Where the measurements are

Heat marks show satellite measurements. Orbit tracks are modelled; glow sizes and place-label positions are display context.

200 km

What each mark means

  • VIIRS (NASA)375 m—

    No detections stored for this frame.

  • Meteosat (EUMETSAT)about 1–3 km per cell

    Measures radiated power, which is what sizes the glow. Its individual pixel positions are not stored, so no Meteosat footprint is drawn — inferring one from the sharper layer would put a detection pixel on ground nobody measured.

  • True geographic scale, corrected for latitude. Frame is about 525 km across.
  • At this scale both sensor footprints are smaller than a pixel, so no true-scale square is drawn. Two squares clamped to the same legible minimum would show a 1:1 ratio for a 5:1 fact.
  • The glow means “an event, roughly here”. Its area follows the measured power and its radius is capped, because an uncapped one would assert a burnt extent nobody measured. The number carries the magnitude.
  • Grey marks detections shown as history, including those on quiet or archived events. It does not establish that a later satellite pass measured no activity.
  • A slate-blue glow is neither: heat one sensor saw and nothing has corroborated, or an event that has fallen outside recent coverage. It is not a confirmed measurement, and it is not an all-clear.
  • At country scale each event is one glow. Individual 375 m detections resolve on the event page, where they are larger than a pixel.

Current measurable activity

No events currently show measurable satellite activity.

Unconfirmed heat, and events out of satellite coverage

These are neither measured activity nor an absence of it. Some carry thermal heat a single sensor saw and nothing has corroborated; others have fallen outside recent satellite coverage, so what is happening there is unknown rather than nothing. Each event says which.

  • Al Jufrah

    Al Jufrah

    First observation, not yet corroborated

    Latest measured power: 7.5 MW ·

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