Occurred Oct 28, 2026, 8:10:00 PM UTC

First published Oct 29, 2026, 12:49:16 AM UTC · Last updated Oct 29, 2026, 12:49:16 AM UTC

Heavy satellite-observed smoke area centered at 39.520°N, 120.263°W — Near Sierraville, CA, United States

NOAA HMS classified the satellite-detected smoke extent as heavy density in a GOES-EAST observation spanning 20:10–23:30 UTC on 28 October 2026. The source says this is not a ground-level air-quality measurement or health alert.

At a glance

Affected location: Near Sierraville, California

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Why it matters

The observation documents smoke extent but does not establish surface air quality or a health warning.

Location

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Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 7/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 1/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 3/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 2/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 2/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Primary official sources

NOAA HMS Smoke Detection Heavy satellite-observed smoke area centered at 39.520°N, 120.263°W — Near Sierraville, CA, United StatesNOAA/NESDIS Hazard Mapping System (HMS) Usage terms

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Related developments reported in the last 30 days. These are not necessarily ongoing incidents.

Nearby · within 200 km
Heavy satellite-observed smoke area centered at 39.010°N, 121.937°W — Near Arbuckle, CA, United StatesOct 28, 2026, 8:10 PM UTC
NOAA HMS classified a satellite-observed smoke area near Arbuckle, California, as heavy density, based on GOES-EAST observations from 20:10 to 23:30 UTC on October 28, 2026. The source states that this is an observed smoke extent, not a ground-level air-quality measurement or health alert.
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Heavy satellite-observed smoke area centered at 39.508°N, 121.015°W — Near Camptonville, CA, United StatesOct 28, 2026, 8:10 PM UTC
NOAA HMS classified the satellite-observed smoke as heavy density during the stated observation window. The source says this is not a ground-level air-quality measurement or health alert.
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Heavy satellite-observed smoke area centered at 38.414°N, 120.847°W — Near Ione, CA, United StatesOct 28, 2026, 8:10 PM UTC
NOAA classified a satellite-observed smoke area near Ione, California, as heavy density. The source states this is not a ground-level air-quality measurement or health alert.
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Medium satellite-observed smoke area centered at 38.401°N, 120.815°W — Near Sutter Creek, CA, United StatesOct 28, 2026, 8:10 PM UTC
NOAA HMS classified a medium-density smoke area near Sutter Creek, California, using GOES-East observations from October 28, 2026. The source identifies it as a satellite-observed extent, not a ground-level air-quality measurement or health alert.
Nearby · within 200 km
Medium satellite-observed smoke area centered at 39.043°N, 121.956°W — Near Arbuckle, CA, United StatesOct 28, 2026, 8:10 PM UTC
A satellite record identifies a medium-density smoke extent near Arbuckle, California, during an observation window on October 28, 2026. The source says this is not a ground-level air-quality measurement or a health alert.
Nearby · within 200 km
Medium satellite-observed smoke area centered at 39.551°N, 121.032°W — Near Camptonville, CA, United StatesOct 28, 2026, 8:10 PM UTC
NOAA HMS classified a satellite-observed smoke area as medium density, observed by GOES-EAST from 20:10 to 23:30 UTC on October 28, 2026. It is an observed smoke extent, not a ground-level air-quality measurement or health alert.

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