Observed thermal detection
Fire near Mozelos, Arcos de Valdevez
Confirmed by two independent satellite looks. No satellite detection does not mean an area is safe. Cloud, sensor timing and heat below a sensor’s threshold can hide activity.
Satellite
Where the measurements are
Heat marks show satellite measurements. Orbit tracks are modelled; glow sizes and place-label positions are display context.
What each mark means
Footprint at this scaleVIIRS (NASA) 375 m · not drawnMeteosat (EUMETSAT) about 1–3 km per cell · not drawn
- VIIRS (NASA)375 m
No detections stored for this frame. VIIRS last passed over . No VIIRS detection has been recorded for this event — that describes our coverage, not an all-clear.
- 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 48 km across.
- 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.
- Coastline, lakes and borders come from a generalised map with about 1,7 km between vertices, so treat every line as the shape of the geography and not as a surveyed boundary. It is drawn under the data and never over it.
- Place names sit at their own coordinates from an offline index of populated places. They say what is near the measurements — not that any named place is burning, and not how far the heat reaches.
Official
Official source record
Official information is shown separately and takes precedence over satellite interpretation.
Official feeds are currently integrated for Portugal only.
- ANEPC — Autoridade Nacional de Emergência e Proteção Civil
Vilela, Vilela, São Cosme e São Damião e Sá, Arcos de Valdevez
Authority status: Chegada ao TO
An authority link is not a fire classification.
18 Oct 2026, 21:30 UTC- Source start time
- 18 Oct 2026, 20:38 UTC
- Personnel
- 5
- Vehicles
- 1
- Aircraft
- 0
Satellite
Current facts
No satellite detection does not mean an area is safe. Cloud, sensor timing and heat below a sensor’s threshold can hide activity.
MTG · VIIRS · Official
Verification ladder
- ConfirmedObserved
Two independent satellite looks recorded the same heat; one power reading or one VIIRS detection alone does not establish this step. Confirming sensors: unknown in the public record.
- QuantifiedObserved
The heat here has a number on it — radiated power, in megawatts — and the number is what lets one reading be compared with another from the same time of day, day by day. Between measurements it says nothing. Measured by: Meteosat (EUMETSAT).
- Linked to an official sourceObserved
An official update has been matched to this event. Official information outranks everything above it. ANEPC — Autoridade Nacional de Emergência e Proteção Civil
peak 35.5 MW · Meteosat · · 18 Oct 2026, 21:10 UTC
What each sensor measured
Meteosat looks every ten minutes; VIIRS passes a few times a day. The contrast is the point — between sharp passes there is no new sharp knowledge, only the ten-minute layer.
VIIRS · Meteosat
Observation history
Day and night observations stay labelled. REYKR does not compare unlike times of day.
Measurement record
Measured from 18 Oct 2026, 20:00 to the most recent observation on 18 Oct 2026, 21:10. Satellite readings in the 72 hours shown: 8, from Meteosat (EUMETSAT). Highest single reading in that window: 35.5 MW, Meteosat (EUMETSAT) — 18 Oct 2026, 21:10, .
Observations from the 72 hours up to 18 Oct 2026, 21:10 UTC.
- 18 Oct 2026, 21:10Meteosat2 detections · average 30.5 MW · peak 35.5 MWDay
- 18 Oct 2026, 21:00Meteosat3 detections · average 10.1 MW · peak 20.4 MWDay
- 18 Oct 2026, 20:50Meteosat2 detections · average 7.7 MW · peak 9.9 MWDay
- 18 Oct 2026, 20:40Meteosat1 detections · average 5.9 MW · peak 5.9 MWDay
- 18 Oct 2026, 20:30Meteosat3 detections · average 6.6 MW · peak 8.5 MWDay
- 18 Oct 2026, 20:20Meteosat1 detections · average 9 MW · peak 9 MWDay
- 18 Oct 2026, 20:10Meteosat1 detections · average 3 MW · peak 3 MWDay
- 18 Oct 2026, 20:00Meteosat1 detections · average 3.6 MW · peak 3.6 MWDay
Nearby
Other detections nearby
Other satellite-observed events within 100 km, nearest first — up to six shown.
Norte
6 km away
Quiet — no confirmed renewed activityView event facts →Norte
6.1 km away
Confirmed by two independent satellite looksView event facts →Norte
6.5 km away
Archived after 7 days without detectionsView event facts →Norte
6.8 km away
Archived after 7 days without detectionsView event facts →Norte
7.5 km away
Archived after 7 days without detectionsView event facts →Norte
8 km away
Archived after 7 days without detectionsView event facts →
Questions about these readings
What has been observed near Mozelos, Arcos de Valdevez?
Confirmed by two independent satellite looks. No satellite detection does not mean an area is safe. Cloud, sensor timing and heat below a sensor’s threshold can hide activity.
When was the last measurement near Mozelos, Arcos de Valdevez?
18 Oct 2026, 21:10 UTC
How current is the last measurement near Mozelos, Arcos de Valdevez?
No signals: safe?
No. No detection is not proof of safety: cloud, missed passes, sub-threshold heat or failed reads leave activity unknown.
Missing or misplaced?
Outside coverage or without usable observations: unknown. Meteosat floor about 12 MW; VIIRS 375 m; Meteosat about 1–3 km. Approximate areas, not fire boundaries.
Data age?
Meteosat: every 10 min; median publication lag about 17 min, no deadline. VIIRS: usually 1–3 h after a pass. ANEPC: at least 600 s (10 min) between polls; no publication guarantee. Age per reading.
Sources?
Official above satellite. ANEPC: Portugal only. Meteosat (EUMETSAT); VIIRS (NASA): Suomi-NPP, NOAA-20, NOAA-21. Suomi-NPP retirement planned 1 November 2026.