Climate Risk Summary

Sitka city and, AK Risk Profile

The primary drivers of climate-related financial risk in Sitka city and, AK are Earthquake, Tsunami, and Landslide. This area also faces an unusually high intensity for Volcanic Activity, Winter Weather, and Coastal Flooding compared to national averages.

City-Wide Aggregation

These scores represent the population-weighted average across all residential blocks in Sitka city and.

Primary Risks

Earthquake

$2,240,997

Expected Annual Loss for Sitka city and

92.6Score

Relatively High compared to US average

Sitka city and
Minimal Estimated LossMax Estimated Loss

Tsunami

$2,000,010

Expected Annual Loss for Sitka city and

93.0Score

Relatively Moderate compared to US average

Sitka city and
Minimal Estimated LossMax Estimated Loss

Landslide

$1,550,250

Expected Annual Loss for Sitka city and

95.1Score

Very High compared to US average

Sitka city and (OUTLIER)
Minimal Estimated LossMax Estimated Loss

City Boundary

Legend
Very Low
Low
Moderate
High
Very High
Extreme

Financial Risk Inventory

MAJOR DRIVER
Earthquake
$2,240,997
Score: 92.6
MAJOR DRIVER
Tsunami
$2,000,010
Score: 93.0
MAJOR DRIVER
Landslide
$1,550,250
Score: 95.1
Inland Flooding
$414,823
Score: 14.1
UNUSUALLY HIGH
Volcanic Activity
$141,364
Score: 99.1
UNUSUALLY HIGH
Winter Weather
$34,073
Score: 92.1
Ice Storm
$18,741
Score: 72.0
Lightning
$13,299
Score: 40.4
UNUSUALLY HIGH
Coastal Flooding
$6,945
Score: 83.0
Wildfire
$2,526
Score: 70.7
Cold Wave
$37
Score: 5.5
Tornado
$0
Score: 0.1

Recommended investments to protect your property value and reduce insurance liability based on your local risk profile.

🏠Low Investment

Earthquake Mitigation

General property maintenance and insurance review recommended.

Risk Score: 92.6
🏠Low Investment

Tsunami Mitigation

General property maintenance and insurance review recommended.

Risk Score: 93.0
⛰️High Investment

Landslide Mitigation

Professional slope stabilization and foundation drainage inspection is highly recommended.

Risk Score: 95.1
🏠Low Investment

Volcanic Activity Mitigation

General property maintenance and insurance review recommended.

Risk Score: 99.1
🏠Low Investment

Winter Weather Mitigation

General property maintenance and insurance review recommended.

Risk Score: 92.1
❄️Medium Investment

Ice Storm Mitigation

Install a 10kWh backup battery system to keep pipes from freezing during grid failure.

Risk Score: 72.0
🏠Low Investment

Coastal Flooding Mitigation

General property maintenance and insurance review recommended.

Risk Score: 83.0
🔥Low Investment

Wildfire Mitigation

Create a 5ft 'non-combustible' zone around your home using gravel or pavers instead of mulch.

Risk Score: 70.7

Sources and Methodology

Spatial Aggregation

Our "Atlas" risk scores are derived using a population-weighted spatial join. Because US Zip Codes and Census Tracts do not share perfectly aligned boundaries, a simple geographic average would be misleading. We utilize US Census Block Group population statistics to identify where residents actually live within a Zip Code. We then intersect these points with FEMA National Risk Index (NRI) hazard data to calculate a weighted exposure score.

Financial Projections (EAL)

Expected Annual Loss (EAL) estimates the average economic impact of natural hazards in dollars per year. This calculation incorporates three components: Exposure (the value of structures and agriculture), Annualized Frequency (historical probability), and Historic Loss Ratio (vulnerability of the area).

Primary Data Sources

  • FEMA National Risk IndexHazard frequency and loss data (v1.20.0)
  • U.S. Census BureauTIGER/Line 2025 Shapefiles & Decennial Population

Nearby Cities

Juneau city and

Zip Codes in Sitka city and

99835