{
  "title": "Wildfire Risk in Glenn County, CA 2026 | Satelife",
  "description": "Wildfire risk in Glenn County spans a wide range across the places we scored. Scores run from 18.5 in Willows to 78.6 near Willows, with a county midpoint of 47.4.",
  "image": "https://satelife.ai/images/wildfire-risk/glenn-county/generated/glenn-county-locator.webp",
  "canonical": "https://satelife.ai/wildfire-risk/california/glenn-county/",
  "content": "[Home](/)›[Wildfire Risk](/wildfire-risk/)›[California](/wildfire-risk/california/)›Glenn County\n\nGlenn County, California\n\n# Wildfire risk in Glenn County: _where it is highest_, and why\n\nWildfire risk in Glenn County spans a wide range across the places we scored. Scores run from 18.5 in Willows to 78.6 near Willows, with a county midpoint of 47.4.\n\n[Score my Glenn County address →](#score-my-address) [How risky is this county? ↓](#risk-at-a-glance)\n\nBefore 20002000s2010s2020sCommunity\n\nGlenn County — the largest fires on record, at their perimeter centres, with the county’s main communities. Select a marker for its detail.\n\nAt a glance\n\n## Half of Glenn County scores _Moderate_ or worse\n\nWe scored 153 points across Glenn County on the same 0–100 scale a Satelife address report uses, and they do not land in one place. 1% of them come out Very High, while 22% are Low. Which end your own parcel sits at is not something a county map can tell you.\n\n45%\n\n31%\n\n22%\n\n**Very High** 1% · 2 of 153 points **High** 45% · 69 of 153 points **Moderate** 31% · 48 of 153 points **Low** 22% · 34 of 153 points\n\nSafest end we measured 18.5 near Willows · Low\n\nMiddle of the county 47.4 Moderate — half of Glenn County is above this\n\nMost exposed end we measured 78.6 near Willows · Very High\n\n### And the federal models agree it is a fire county\n\nRelatively Moderate FEMA National Risk Index — wildfire risk rating · index score 91.8 / 100\n\n$2.2M / yr FEMA NRI — expected annual loss from wildfire · rated Relatively Moderate\n\n1.43% USFS Wildfire Risk to Communities — mean annual burn probability · 90th-percentile cell 3.65%\n\n4.19 ft USFS WRC — mean conditional flame length · 91% of the county carries burnable fuel\n\nFEMA NRI also rates Glenn County: all-hazards risk Relatively Low · social vulnerability Very Low · community resilience Very Low · annualised wildfire frequency 0.0042.\n\nSources: FEMA National Risk Index 1.20.0 (Dec 2025), county record · USFS Wildfire Risk to Communities v2.0, mean of the grid cells inside the county. Both describe the county as a whole, never an address in it.\n\nWhat does your Glenn County address score?\n\nA county range shows the spread. Your parcel sits somewhere inside it — the report says where, and what to do about it.\n\nFree to request · PDF report with a 0–100 score, the drivers behind it, and a mitigation plan\n\nLocal context\n\n## What the data says about _Glenn County_\n\nLooking at the four risk tiers used in address reports, the largest count of scored points is in the High tier (69 points). The rest are spread across Moderate (48), Low (34), and a small number in Very High (2).\n\nFire record\n\n## Where the fires _actually were_\n\nSince 1984, 54,775 acres have burned in Glenn County, and 6.5% of the county has burned in that period. The county record here includes 51 fire perimeters since 1984.\n\nThe largest fire named for Glenn County in this summary is Trough (2001), at 24,927 acres. The most recent large fire is Corbin (2020), at 6,061 acres.\n\nTwo very large fires also affected the county in part: Doe (2020) at 589,835 acres and Ranch (2018) at 410,202 acres.\n\n![Ranch Fire (2018) in Glenn County, California - In a year of record-breaking fires, California scored another record on August 7, 2018, when the Mendocino Complex burst into the ](/images/wildfire-risk/glenn-county/photos/california-wildfires-modis-2018-08-08.webp)\n\n**Ranch Fire, 2018** — Glenn County. Photo: MODIS Land Rapid Response Team, NASA GSFC · [Public domain](https://commons.wikimedia.org/wiki/File:California_Wildfires_\\(MODIS_2018-08-08\\).jpg)\n\n![Trough Fire (2001) in Glenn County, California - After undocking with Space Station Alpha, on August 20, 2001, astronauts on the Space Shuttle photographed wildfires burning in th](/images/wildfire-risk/glenn-county/photos/california-wildfires-as-seen-from-the-space-shuttle-1727-16.webp)\n\n**Trough Fire, 2001** — Glenn County. Photo: Astronaut photographs STS105-E-5421, STS105-E-5416, and STS105-E-5417 were taken from the Space Shuttle on August 20, 2001, and were provided by the Earth Scien · [Public domain](https://commons.wikimedia.org/wiki/File:California_Wildfires_as_Seen_From_the_Space_Shuttle_\\(1727_-_16\\).jpg)\n\n51 mapped fire perimeters centred in the county since 1984\n\n54,775 acres inside those perimeters since 1984\n\n6.5% of the county's area, as a share of 3,416.5 km²\n\nCorbin 2020 most recent large fire on record\n\nBefore 20002000s2010s2020s \n\nFire perimeters coloured by decade. Select a perimeter for its name, year and size.\n\nNamed fires on record\n\n-   **Doe Fire**2020589,835 acres in totalcrossed into the county\n-   **Ranch Fire**2018410,202 acres in totalcrossed into the county\n-   **Grindstone Fire**192239,806 acres\n-   **Trough Fire**200124,927 acres\n-   **Corbin Fire**20206,061 acres\n-   **Spanish Fire**20036,050 acres\n-   **Squaw Ridge Fire**19796,861 acres\n-   **Logan Fire**19616,707 acres\n\nPerimeter sources: NIFC Interagency Fire Perimeter History · WFIGS Interagency Perimeters · largest on record: Trough 2001. Perimeters are simplified for display; acreage is the figure the source records.\n\nCommunities\n\n## Where in the county you are _matters most_\n\nAmong the named communities here, Willows (23.6) and Orland (23.5) are very similar on their typical score, while Hamilton City is higher at 29.0.\n\nAll three community medians are below the county midpoint score of 47.4, which shows that higher-risk locations in Glenn County are concentrated outside these town and village centers in the places scored.\n\nHamilton City village\n\n29 _Moderate_\n\nWillows town · 6,072 people\n\n23.6 _Low_\n\nOrland town\n\n23.5 _Low_\n\nThe score is the median of the sampled points nearest that community — a community-scale indicator, not a score for any individual property in it. Population comes from the community's own record where the source carries one.\n\nTerrain & fuels\n\n## Terrain, vegetation and _fuels_\n\nTerrain-related risk ranges from 20.0 near Willows to 65.0 in unincorporated Glenn County, with a midpoint of 40.0. That spread shows meaningful topographic differences across the county.\n\nVegetation and fuels show an even wider spread, from 5.0 near Orland to 80.0 near Willows, with a midpoint of 55.0. In practical terms, fuel conditions contribute very differently depending on where you are.\n\n40 median terrain score (max 65 near unincorporated Glenn County)\n\n55 median vegetation & fuels score (max 80 near Willows)\n\nFire weather\n\n## Fire weather across _Glenn County_\n\nFire-weather scores are elevated across the county, ranging from 55.3 in unincorporated Glenn County to 73.5 near Willows. The midpoint is 64.5, so weather-related exposure is a major part of the county’s wildfire risk profile.\n\nA separate countywide burn-probability model reports a mean annual burn probability of 1.43% and a 90th-percentile cell value of 3.65%. That model is not a fire-weather measure; it is a modeled burn-probability product.\n\n55.3 lowest fire-weather score — near unincorporated Glenn County\n\n73.5 highest fire-weather score — near Willows\n\nWhat drives it\n\n## Which part of the risk _moves_, and which doesn't\n\nRisk is not uniform from one part of the county to another. The lowest and highest overall scores are both tied to the Willows area, from 18.5 in Willows up to 78.6 near Willows.\n\nPast-fire and mapped-hazard patterns also vary sharply by location. Fire history scores run from 5.0 to 95.0 (both near Willows), while hazard-zone scores run from 10.0 near Willows up to 97.4 near Orland.\n\nEach bar is what one part of the score covers across Glenn County, on the same 0–100 scale. A long bar is a part of the risk that depends on where you are; a short one is the same almost everywhere.\n\nTerrain\n\n20–65 highest near unincorporated Glenn County\n\nVegetation & fuels\n\n5–80 highest near Willows\n\nHazard zone\n\n10–97.4 highest near Orland\n\nFire history\n\n5–95 highest near Willows\n\nFire weather\n\n55.3–73.5 highest near Willows\n\nOverall score\n\n18.5–78.6 highest near Willows\n\nThe tick on each bar is the middle value. Tier boundaries — Moderate at 25, High at 50, Very High at 75 — are the faint lines behind them.\n\nShow every number behind these bars\n\nLayer\n\nMin\n\nMedian\n\nMax\n\nLowest place\n\nHighest place\n\nPoints\n\nTerrain\n\n20\n\n40\n\n65\n\nnear Willows\n\nunincorporated Glenn County\n\n153\n\nVegetation & fuels\n\n5\n\n55\n\n80\n\nnear Orland\n\nnear Willows\n\n153\n\nHazard zone\n\n10\n\n63.6\n\n97.4\n\nnear Willows\n\nnear Orland\n\n153\n\nFire history\n\n5\n\n20\n\n95\n\nnear Willows\n\nnear Willows\n\n153\n\nFire weather\n\n55.3\n\n64.5\n\n73.5\n\nunincorporated Glenn County\n\nnear Willows\n\n153\n\nComposite\n\n18.5\n\n47.4\n\n78.6\n\nWillows\n\nnear Willows\n\n153\n\nIndependently of Satelife's layers, the USFS Wildfire Risk to Communities grid puts the county's mean annual burn probability at **1.43%** (90th percentile cell: **3.65%**), with a mean conditional flame length of **4.19 ft**. **91%** of the 31,938 grid cells inside the county carry burnable fuel at all.\n\nSource: USFS Wildfire Risk to Communities v2.0 (ImageServer, county extent).\n\nCAL FIRE has no mapped Fire Hazard Severity Zone at **40** of the 153 sampled points — the zones cover Local Responsibility Areas. At **40** of them the USFS grid above supplied the hazard reading instead.\n\n153 sample points on a ~2.3 km grid, plus one at the centre of each community, weighted with the Satelife county profile v1 · median layer coverage 100%. Scores are 0–100 and comparable within the county, not across states.\n\nFor a property\n\n## What a county range means for _one address_\n\nFEMA’s National Risk Index rates Glenn County’s wildfire risk as Relatively Moderate, and its expected annual loss from wildfire as Relatively Moderate. FEMA rates the county’s all-hazards risk as Relatively Low.\n\nThis county summary does not measure parcel-by-parcel building features, so property-specific construction and defensible-space conditions were not measured here. What is included is county-scale wildfire context, including that 90.8% of the county is in areas that can burn in the modeled burn-probability product.\n\nAcross 153 sampled points in Glenn County, the score runs from 18.5 to 78.6 — two neighbouring parcels can sit in different tiers. A county number is the middle of that spread; it says nothing about which end yours is at.\n\nFind out where your Glenn County parcel sits\n\nSlope, the fuel touching the structure, the road out, the fire history within a mile — measured at your address, not averaged across the county.\n\nFree to request · PDF report with a 0–100 score, the drivers behind it, and a mitigation plan\n\nCoverage\n\n## ZIP codes we cover in Glenn County\n\nEvery one of the 18 ZIP areas that touch Glenn County — we run address-level reports in all of them. They are grouped by the median score of the points we sampled inside each, which is a neighbourhood-scale indicator and **not** a score for any property: two homes in the same ZIP routinely land in different tiers.\n\n**High** 1 ZIP\n\n-   [95939 Willows59](/wildfire-risk/zip/95939/)\n\n**Moderate** 6 ZIPs\n\n-   [95988 Willows41](/wildfire-risk/zip/95988/)\n-   [95963 Orland37](/wildfire-risk/zip/95963/)\n-   [95970 Willows32](/wildfire-risk/zip/95970/)\n-   [95951 Hamilton City29](/wildfire-risk/zip/95951/)\n-   [95920 Willows28](/wildfire-risk/zip/95920/)\n-   [95943 Willows28](/wildfire-risk/zip/95943/)\n\n**Low** 1 ZIP\n\n-   [95913 Willows24](/wildfire-risk/zip/95913/)\n\n**No sampled point inside** 10 ZIPs\n\n[95917 Willows](/wildfire-risk/zip/95917/) · [95928 Hamilton City](/wildfire-risk/zip/95928/) · [95932 Willows](/wildfire-risk/zip/95932/) · [95938 Hamilton City](/wildfire-risk/zip/95938/) · [95955 Willows](/wildfire-risk/zip/95955/) · [95965 Hamilton City](/wildfire-risk/zip/95965/) · [95973 Hamilton City](/wildfire-risk/zip/95973/) · [95979 Willows](/wildfire-risk/zip/95979/) · [96021 Orland](/wildfire-risk/zip/96021/) · [96074 Orland](/wildfire-risk/zip/96074/)\n\nGrouped from 8 of 18 ZIP areas — the rest had no sample point fall inside them. The community shown is the nearest mapped place to the ZIP's centre.\n\nZIP areas are Census 2020 ZIP Code Tabulation Areas intersecting the county boundary.\n\nWhere to go next\n\n## Glenn County wildfire risk _in context_\n\n[California wildfire risk The statewide picture and every county page we publish](/wildfire-risk/california/) [Wildfire risk by state Every state and county we cover](/wildfire-risk/) [How Satelife calculates wildfire risk Data sources, layers, score composition, honest limits](/wildfire-risk/methodology/) [Create a wildfire evacuation plan Zones, egress routes, refuge areas](/wildfire-evacuation-plan/) [Run a report for a Glenn County address PDF + score + mitigation plan](/#cta)\n\nFAQ\n\n## Frequently asked questions about _Glenn County wildfire risk_\n\nWhat is the biggest fire listed for Glenn County?\n\nIn this summary, the largest named fire for Glenn County is Trough (2001), which burned 24,927 acres.\n\nWhat is the most recent large fire in this county summary?\n\nThe most recent large fire is Corbin (2020), at 6,061 acres.\n\nHow much of Glenn County has burned since 1984?\n\n54,775 acres have burned since 1984, which equals 6.5% of the county.\n\nAre wildfire scores the same in Willows, Orland, and Hamilton City?\n\nNo. Willows and Orland are close (23.6 and 23.5), while Hamilton City is higher at 29.0.\n\nIs FEMA’s rating a town-by-town score?\n\nNo. FEMA’s National Risk Index ratings here apply to Glenn County as a whole, not to individual places inside the county.\n\nThis page is generated from a Glenn County data pack assembled on 2026-08-19 (pack v1.0). Scores are sampled across the county, not measured at any individual address, and are informational decision support — not a substitute for official evacuation orders, a fire-agency hazard determination, or an insurer's underwriting judgement. Data versions: fema\\_nri 1.20.0 (Dec 2025) · landfire per adapter · nifc\\_history All Years View · wfigs current · wrc v2.0 (2024) · zcta Census 2020.\n\n## What does _your parcel_ look like, layer by layer?\n\nA county range shows the spread. An address-level Satelife report shows where in that spread your property actually sits — PDF, per-layer score, and a prioritized mitigation plan.\n\n[Start with your address →](/#cta)\n\n[![PRR](/images/prr.png)](/ficha-de-website-voucher-satelife.pdf)\n\n© 2024–2026 Satelife, Lda. All rights reserved.\n\nSatelife reports are for informational purposes only and do not constitute insurance, financial, or legal advice."
}