Field Reports

Western Fire Corridor Dispatches

Ground-truth dispatches from the western fire corridor · Beginning June 2026

Field reports begin June 2026

A PCSN contributor will spend the summer traversing the western fire corridor by road—from the Pacific Northwest through the Northern Rockies, across the Colorado Plateau, into the desert Southwest, and up the Sierra Nevada and California coast. Dispatches will be filed from the field as conditions are observed across every major fire regime in the western United States.

Each dispatch pairs instrument-grade field measurements—particulate counts, microclimate readings, soil moisture, water quality—with ground-level photography and narrative context that satellite data alone cannot provide.

Instrumentation & methodology

Atmospheric

PM2.5 / PM10 particulate counts, AQI, visibility estimate, smoke column observations

Microclimate

Temperature, relative humidity, dew point, wind speed & direction, barometric pressure, wet-bulb globe

Soil & fuel

Soil moisture (volumetric), fuel moisture content, litter depth, ladder fuel density

Water

Stream flow estimate, reservoir level, water temperature, TDS / conductivity, pH

Geolocation

GPS coordinates, elevation, slope aspect, land cover classification, GACC region

Photography

Geotagged ground-level and panoramic photos, burn scar documentation, fuel load transects

Fire behavior

Active fire observations, burn severity, rate of spread, spotting distance, suppression status

Narrative

Community impact, local response capacity, infrastructure vulnerability, what the instruments don't capture

Report format preview

Dispatch #001

Sample: Klamath Basin Fuel Loading

Jul 5, 2026

42.1°N, 121.7°W

PM2.5

58.3 µg/m³

AQI

142

Drought

Elev

4,143 ft

Temp

103°F

12%

Wind

15 mph SW

Soil M.

4.2%

Fuel M.

[ field photograph ]

Soil moisture at 4.2% volumetric—well below the 8% threshold where fine fuels become available to ignition. Dead fuel moisture at 6% confirms what the litter layer shows on the ground: the timber east of Upper Klamath Lake hasn’t seen prescribed fire in eleven years. Ladder fuels connect the forest floor to the canopy at intervals of thirty feet. PM2.5 reading of 58 µg/m³ from a fire complex 40 miles southwest…

This is a preview. Actual dispatches begin June 2026.

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