Surprise Disaster Risk Score & Hazard Analysis
With a population of 149,519 and a calculated risk score of 96.2, Surprise faces unique challenges. This page is a complete hazard risk assessment for Surprise, AZ. The landscape around Surprise defines much of daily life. Yet, the geography also exposes the area to certain threats. The risk of heat waves is higher here than the national average.
Total Risk Score
Our algorithm assigns Surprise a Risk Score of 96.181 out of 100. This score is heavily influenced by the high probability of Heat Wave and Wildfire.
Top Hazards for The Surprise Area
In terms of regional hazard exposure in Arizona, the proximity to specific terrain features amplifies the heat wave risk. It is important to note that this value of 99.8 serves as a benchmark for local insurance and safety planning. Keeping trees trimmed near power lines reduces the risk of prolonged outages.
Looking at the long-term climate history of Arizona, resilience against wildfires is a key aspect of local safety. Therefore, we calculate a specific index of 99.7, indicating a substantial threat level. Understanding local evacuation zones (and backup routes) is vital for every resident.
Regional data for Arizona suggests that the area is historically prone to periods of earthquake. Consequently, the data-driven score of 98.2 underscores the need for preparedness. Families should have a reunification plan for when an event occurs during work/school hours.
Monitor Active Threats
Surprise has identified seismic or wildfire risks. Check our real-time tracker for active events.

The Apartment Fortress
Living in Surprise? Learn how to handle water storage, sanitation, and security in a small space.
How to Prepare in Surprise
Read the Full Guide βExtreme heat is a silent killer in Surprise. It stresses the power grid and the human body. Your survival strategy should revolve around hydration, cooling, and backup power.
Critical Action Checklist
- 1Know the location of your nearest cooling center.
- 2Have a backup power source for fans or medical devices.
- 3Cover windows with reflective material to keep heat out.
- 4Monitor local weather for 'Wet Bulb' temperature warnings.
- 5Store electrolyte powder in your kit, not just plain water.
Essential Gear for Surprise

Water
Scepter 5 Gallon Water Container
Bombproof water storage. 5 gallons is the minimum for one person for 5 days.

Power
Petzl Actik Core Headlamp
600 lumens and rechargeable. Hands-free lighting is critical during power outages.

Water
Sawyer Products Mini Water Filtration System
Filters up to 100,000 gallons. Essential when tap water is compromised.
Your safety depends on your readiness. Start building your emergency kit for Heat Wave now.
View Complete Gear Checklist βCompare Nearby Cities
| City | Risk Score | Analysis |
|---|---|---|
| Phoenix | 96.2 | When compared to Phoenix, Surprise is slightly higher risk. The difference of 0.0 points highlights local geological and meteorological variations. |
| Tucson | 92.9 | Tucson and Surprise share similar regional risks, but our data gives Tucson the edge in overall safety. |
| Mesa | 96.2 | When compared to Mesa, Surprise is slightly higher risk. The difference of 0.0 points highlights local geological and meteorological variations. |
| Chandler | 96.2 | Choosing between Surprise and Chandler? Surprise presents a unique set of challenges. |
| Gilbert | 96.2 | When compared to Gilbert, Surprise is slightly higher risk. The difference of 0.0 points highlights local geological and meteorological variations. |
Frequently Asked Questions
How common are Heat Waves in Surprise?
With a risk score of 99.8 for Heat Wave, Surprise is considered highly vulnerable. Residents should have a specific plan for Heat Wave events, which are the primary driver of the city's overall risk profile.
Is Surprise safer than other cities in Arizona?
It varies by hazard. While Surprise has its own risk profile (Total Score: 96.2), it is among the higher-risk areas in Arizona. See our state rankings for a direct comparison.
Should I move to Surprise given the risk of Wildfire?
Every city has risks. The threat of Wildfire (Score: 99.7) is manageable with proper preparation. The local infrastructure in Surprise is designed to handle this, but personal insurance and a 'go-bag' are recommended.
How does Surprise compare to other cities in Arizona?
See the full Arizona Disaster Rankings to see how Surprise stacks up against other cities in the state.