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2025 Annual Fire Report

Fires in Arcata, California

In 2025, fire departments serving Arcata responded to 108 fire and hazmat incidents — from cooking fires to gas leaks to a single $416K building blaze. Here's the full picture.

Updated Sep 27, 2026 Grade B- Peak yr 2021 Humboldt County 18,536 residents 0 reporting departments 945 5-yr

Incomplete 2025 data. Arcata's departments reported 108 incidents to NFIRS for 2025, against about 189 in a typical year, so 2025 figures on this page undercount. The 2021–2025 totals are the better guide.

Total incidents
108
Not comparable with 2024 (incomplete reporting)
Building fires
16
Residential 63% Other 37%
Property loss
$1.3M
$884K structure · $414K contents
Deaths & injuries
3 / 5
3 civilian deaths · 4 civ injuries · 1 firefighter injuries
01 The mix

What kinds of fires happen here?

Special outside fire, other lead by count. Building fires lead by dollars. Together the top five categories make up about 57% of all calls.

108
Total Incidents
Special outside fire, other 25 23.1%
Building fires 16 14.8%
Gas leak (natural gas or LPG) 7 6.5%
Authorized controlled burning 7 6.5%
Carbon monoxide incident 6 5.6%
All other categories 47 43.5%
02 Seasonality

When do fires happen?

Aug peaks. Sep dips. Watch for the typical fall climb starting in October.

Jan 15
Feb 14
Mar 13
Apr 6
May 12
Jun 12
Jul 17
Aug 19
Sep 0
Oct 0
Nov 0
Dec 0
Fewer
More
2b Five-year trend

Year over year in Arcata

945 incidents 2021–2025. Peak year was 2021. $4.1M cumulative property loss. 6 civilian deaths.

YearIncidentsYoY 
2021 246 —
2022 219 -11.0%
2023 227 +3.7%
2024 145 -36.1%
2025* 108 —

* Well below Arcata's usual volume. That almost always means one or more departments didn't submit a full year to NFIRS, not that fires dropped, so no year-over-year change is shown for it.

03 Cause of ignition

What sparks building fires?

For the 16 building fires Arcata departments responded to in 2025, here's how they were classified once investigators were finished.

Unintentional
33%
21
Cause undetermined
12%
8
Intentional / arson
44%
28
Equipment / heat source failure
6%
4
Under investigation
3%
2
Act of nature (lightning)
2%
0
3b Where fires start

Where do fires start in Arcata?

NFIRS Area of Origin (AREA_ORIG) for the 652 building fires investigators classified across 2021–2025. The room or location where ignition occurred — kitchens, bedrooms, exterior, vehicle areas — tells you where to focus prevention.

#Area of originCountShare 
1 Undetermined 162 24.8%
2 Open area - outside; included are farmland, field 97 14.9%
3 Other 80 12.3%
4 Outside area, other 57 8.7%
5 Highway, parking lot, street: on or near 45 6.9%
6 Wildland, woods 43 6.6%
7 Engine area, running gear, wheel area 21 3.2%
8 Cooking area, kitchen 19 2.9%
9 Operator/passenger area of transportation equip. 15 2.3%
10 Bedroom - < 5 persons; included are jail or prison 11 1.7%
11 All other areas 102 15.6%
3c What ignited it

What actually ignited the fire?

NFIRS Heat Source (HEAT_SOURC) — the physical thing that started it. Spark or ember from operating equipment, an open flame, smoking materials, or hot embers from a fireplace are the leading culprits nationwide. Here's the Arcata mix.

#Heat sourceCountShare 
1 Undetermined 405 62.1%
2 Cigarette lighter 76 11.7%
3 Radiated, conducted heat from operating equipment 21 3.2%
4 Heat from other open flame or smoking materials 18 2.8%
5 Heat from powered equipment, other 15 2.3%
6 Match 13 2.0%
7 Hot ember or ash 11 1.7%
8 Arcing 10 1.5%
9 Hot or smoldering object, other 10 1.5%
10 Radiated heat from another fire 10 1.5%
11 All other sources 63 9.7%
04 The biggest fires

8 fires · $841K in losses

Largest single-incident property losses reported by Arcata departments in 2025. These 8 fires alone account for 95% of the city's annual total.

# Property loss Type Severity Status
1 $416,370 Building fires Major Investigated
2 $130,000 Passenger vehicle fire Significant Investigated
3 $104,093 Building fires Significant Investigated
4 $85,000 Camper or recreational vehicle (RV) fire Significant Investigated
5 $50,000 Building fires Significant Investigated
6 $30,000 Building fires Significant Investigated
7 $15,000 Passenger vehicle fire Significant Investigated
8 $10,801 Building fires Significant Investigated
05 How Arcata compares

Arcata vs California vs the nation

Per-capita rates let us compare apples to apples. Arcata sits below the national average for incidents per resident.

5.83
Incidents per 1,000 residents
Arcata
5.83
CA avg
5.32
US avg
7.48
0.86
Building fires per 1,000 residents
Arcata
0.86
CA avg
0.32
US avg
0.85
161.8
Civilian fire deaths per million
Arcata
161.8
CA avg
2.9
US avg
5.9
5b Who gets hurt

Casualty demographics in Arcata

21 fire-related casualties recorded in NFIRS Module 11 across the 2021–2025 window. Age, gender, and severity are coarse-binned — no individual identification possible.

AgeCount 
0-9 0
10-19 3
20-29 3
30-39 5
40-49 5
50-59 0
60-69 3
70-79 1
80+ 1
Civilian vs firefighter
Civilian 19 FF 2
Gender
M 11 F 10 Unk 0
Severity (1=minor → 5=fatal)
6
1
6
2
2
3
1
4
6
5
5c Wildfires nearby

Wildfires within 50 mi of Arcata

Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 830,620 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.

50 mi radius
YearCauseAcresDistance 
2020 Natural 142,386 39.6 mi
1999 Natural 124,898 40.2 mi
2015 Natural 68,040 32.2 mi
2006 Natural 66,113 42.6 mi
2008 Natural 38,394 50.0 mi
2006 Equipment and vehicle use 35,101 49.0 mi
2015 Natural 34,006 36.8 mi
2008 Natural 32,059 48.4 mi
2008 Natural 31,419 41.3 mi
2015 Natural 27,150 36.7 mi
2008 Natural 25,398 34.0 mi
2008 Natural 25,199 41.6 mi
5d Top ZIPs

Where in Arcata do fires concentrate?

Top 3 ZIP codes by NFIRS incident count across 2021–2025. Each ZIP has its own fire profile — dive in for neighborhood-level context.

#ZIP5-yr incidents 
1 95521 941
2 95519 3
3 95524 1
5e Peer cities

Cities similar to Arcata

Six California cities with population within ±25% of Arcata. Useful comparison targets — same state, similar size, different fire profile.

07 Stay prepared

Before the next Red Flag day.

A 30-minute weekend can cut your home's exposure substantially. These four checklists are a good starting point.

About this data

Numbers reflect incidents reported by participating fire departments to the National Fire Incident Reporting System (NFIRS) Public Data Release for calendar year 2025. NFIRS is voluntary — about 23,000 of roughly 30,000 US fire departments report — so totals are a strong indicator, not a complete census. Per-capita comparisons use 2023 ACS population estimates. Wildland fire data complements NFIRS with NIFC and USFS perimeters. Active-fire counts come from a dated NIFC snapshot, not a live feed.