Home› ZIP› 99688
ZIP-level NFIRS data

Fires in ZIP 99688

ZIP 99688 recorded 49 fire and hazmat incidents in 2025, 346 across 2021–2025. Primary county: Matanuska-Susitna Borough, AK. FEMA NRI rates wildfire risk here as Very High.

ZIP 99688 FIPS 02170 ZIP-level
Total incidents (2025)
49
346 across 5 years
Building fires
8
1 wildland
Wildfire risk
95
FEMA NRI · Very High
Active fires
0
in Matanuska-Susitna Borough
01 Five-year trend

Year over year in ZIP 99688

346 incidents from 2021 through 2025 inside this ZIP.

YearIncidents 
2021 110
2022 71
2023 40
2024 76
2025 49
02 Seasonality

When do fires happen in ZIP 99688?

May peaks. Apr dips. Aggregated across all 5 years inside this ZIP.

Jan 30
Feb 22
Mar 18
Apr 12
May 41
Jun 40
Jul 31
Aug 21
Sep 25
Oct 39
Nov 30
Dec 37
03 Top incident types

What kinds of calls lead in ZIP 99688?

Top 5 NFIRS incident types for ZIP 99688 across 2021–2025.

#Incident typeCountShare 
1 Building fires 105 30.3%
2 Passenger vehicle fire 31 9.0%
3 Power line down 30 8.7%
4 Chimney or flue fire, confined to chimney or flue 29 8.4%
5 Forest, woods or wildland fire 27 7.8%
04 Cause of ignition

What sparks fires in ZIP 99688?

For the 8 building fires reported here in 2025, here's how investigators classified ignition cause.

Unintentional
47%
65
Cause undetermined
8%
11
Intentional / arson
5%
7
Equipment / heat source failure
28%
38
Under investigation
0%
0
Act of nature (lightning)
12%
1
05 Where fires start

Where in the building fires start

NFIRS Area of Origin for ZIP 99688 fires across 2021–2025.

#Area of originCountShare 
1 Open area - outside; included are farmland, field 24 17.4%
2 Engine area, running gear, wheel area 17 12.3%
3 Duct: hvac, cable, exhaust, heating, or AC 11 8.0%
4 Exterior, exposed surface 11 8.0%
5 Wildland, woods 7 5.1%
6 Ceiling & floor assembly, crawl space b/t stories 6 4.3%
7 Undetermined 6 4.3%
8 Common room, den, family room, living room, lounge 5 3.6%
9 All other areas 51 37.0%
06 What ignited it

The leading heat sources here

NFIRS HEAT_SOURC code — the physical thing that started the fire.

#Heat sourceCountShare 
1 Hot ember or ash 27 19.6%
2 Radiated, conducted heat from operating equipment 18 13.0%
3 Undetermined 17 12.3%
4 Flame/torch used for lighting 9 6.5%
5 Radiated heat from another fire 9 6.5%
6 Spark, ember or flame from operating equipment 8 5.8%
7 Heat spread from another fire, other 8 5.8%
8 Cigarette lighter 7 5.1%
9 All other sources 35 25.4%
07 The biggest fires

8 fires · $2.5M in losses

Largest single-incident losses in ZIP 99688 across 2021–2025. These 8 fires alone account for 4632% of the ZIP's 2025 reported total.

#Property lossTypeYearSeverity
1 $800,000 Building fires 2022 Major
2 $350,000 Building fires 2022 Major
3 $300,000 Off-road vehicle or heavy equipment fire 2021 Major
4 $255,000 Fires in structures other than in a building 2022 Major
5 $250,000 Building fires 2022 Major
6 $200,000 Building fires 2021 Significant
7 $200,000 Building fires 2022 Significant
8 $160,000 Building fires 2022 Significant
08 Cities in this ZIP

Most active cities in ZIP 99688

Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 99688.

#City5-yr incidents 
1 Willow 270
2 Houston 2
11 Current conditions

Right now in 99688

The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.

About ZIP-level data

NFIRS reports each fire incident with a 5-digit address ZIP. We aggregate those rows directly to produce ZIP-level totals — 346 incidents in this ZIP across 2021–2025. Building-fire breakdowns (Area of Origin, Heat Source, ignition cause) only count fires investigators classified beyond the basic incident report. Because NFIRS reporting is voluntary, totals are a strong indicator rather than a complete census.