Portsmouth Disaster Risk Score & Hazard Analysis
With a population of 97,299 and a calculated risk score of 74.4, Portsmouth faces unique challenges. This page is a complete hazard risk assessment for Portsmouth, VA. Portsmouth is a city with a rich history and bright future. But smart residents know to keep an eye on the forecast. We found that coastal flooding rank among the highest local hazards.
Total Risk Score
Our algorithm assigns Portsmouth a Risk Score of 74.428 out of 100. This score is heavily influenced by the high probability of Coastal Flooding and Hurricane.
Flood risk in Portsmouth, Virginia
Topography and rainfall patterns contribute to flood risks in parts of Portsmouth. Even areas outside high-risk zones can experience flash flooding during intense precipitation events.
Portsmouth Flood Protection
- •Elevate utilities and valuable items above ground level
- •Keep gutters and downspouts clear of debris
- •Avoid walking or driving through floodwaters ('Turn Around Don't Drown')
Top Hazards for The Portsmouth Area
Historically, the climate of Virginia dictates that historical precedents show that coastal flooding are an ever-present reality. As a result, the aggregate danger score for this specific hazard stands at 92.0. Residents in low-lying zones should have evacuation routes mapped out well in advance.
Given the environmental patterns common in Virginia, the potential for hurricanes in Portsmouth stands out as a primary factor. Additionally, this score of 89.5 reflects both the frequency and potential severity of events. For those near water, having a 'go-bag' ready for rapid evacuation is non-negotiable.
Long-standing weather records for Virginia indicate citizens here are statistically more likely to encounter ice storms. Crucially, an analytical review of past disasters puts the current risk tier at 79.8. Surge protectors and whole-home backup solutions are increasingly popular investments.
Winter Grid Failure Guide
Portsmouth has significant winter storm risk. Learn the thermodynamics of survival when the power goes out.
The Apartment Fortress
Living in Portsmouth? Learn how to handle water storage, sanitation, and security in a small space.
How to Prepare in Portsmouth
Read the Full Guide →For Portsmouth, water protection is key. The combination of high winds and potential storm surge requires a multi-layered approach. You need to be ready to shelter in place for 72 hours or evacuate at a moment's notice.
Critical Action Checklist
- 1Elevate critical documents and electronics off the floor.
- 2Have a 'Go-Bag' ready in case evacuation orders are issued.
- 3Store at least 1 gallon of water per person per day for 7 days.
- 4Identify your evacuation zone and map out two different routes.
- 5Install storm shutters or have pre-cut plywood ready for windows.
Essential Gear for Portsmouth
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.
Tools
Leatherman Wave+ Multi-Tool
18 tools in one. Essential for turning off gas valves or making repairs.
Your safety depends on your readiness. Start building your emergency kit for Coastal Flooding now.
View Complete Gear Checklist →Compare Nearby Cities
| City | Risk Score | Analysis |
|---|---|---|
| Virginia Beach | 80.8 | Choosing between Portsmouth and Virginia Beach? Portsmouth presents a lower overall risk profile. |
| Richmond | 59.3 | Choosing between Portsmouth and Richmond? Portsmouth presents a unique set of challenges. |
| Chesapeake | 84.4 | When compared to Chesapeake, Portsmouth is statistically safer. The difference of 10.0 points highlights local geological and meteorological variations. |
| Arlington | 60.7 | Arlington and Portsmouth share similar regional risks, but our data gives Arlington the edge in overall safety. |
| Norfolk | 85.5 | When compared to Norfolk, Portsmouth is statistically safer. The difference of 11.1 points highlights local geological and meteorological variations. |
Frequently Asked Questions
How common are Coastal Floodings in Portsmouth?
With a risk score of 92.0 for Coastal Flooding, Portsmouth is considered highly vulnerable. Residents should have a specific plan for Coastal Flooding events, which are the primary driver of the city's overall risk profile.
Is Portsmouth safer than other cities in Virginia?
It varies by hazard. While Portsmouth has its own risk profile (Total Score: 74.4), it is generally comparable to the average in Virginia. See our state rankings for a direct comparison.
Should I move to Portsmouth given the risk of Hurricane?
Every city has risks. The threat of Hurricane (Score: 89.5) is manageable with proper preparation. The local infrastructure in Portsmouth is designed to handle this, but personal insurance and a 'go-bag' are recommended.
How does Portsmouth compare to other cities in Virginia?
See the full Virginia Disaster Rankings to see how Portsmouth stacks up against other cities in the state.