County Data
Portsmouth County, Virginia
Self-reliance and preparedness data for Portsmouth County
Relatively Low
Hazard Risk (10.0/100)
Moderate
Solar (4.3 kWh/m²/day)
Natural Hazard Risks in Portsmouth County
| Hazard | Risk Rating | Score |
|---|---|---|
| Tornado | Relatively Moderate | 20.7 |
| Ice Storm | Relatively Moderate | 15.9 |
| Lightning | Relatively Low | 15.8 |
| Riverine Flooding | Relatively Moderate | 12.4 |
| Heat Wave | Relatively Moderate | 11.1 |
Source: FEMA National Risk Index. Scores 0–100, higher = more risk.
Climate Profile
Temperature & Growing Season
| January Avg | 38°F |
Water & Energy
| Annual Precipitation | 5.1″ |
| Solar Potential | 4.3 kWh/m²/day |
| Wind Speed | 3.5 m/s |
| Soil Type | Silt Loam |
Local Species
81
Edible species
35
Medicinal species
54
Autonomy Score
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Frequently Asked Questions
- What are the biggest natural hazards in Portsmouth County, Virginia?
- Portsmouth County has an overall hazard rating of Relatively Low based on FEMA National Risk Index data. The top threats are Tornado, Ice Storm, Lightning. Each hazard is scored 0–100 by likelihood and expected impact.
- Is Portsmouth County good for solar power?
- Portsmouth County has a moderate solar rating. Solar potential is based on average daily irradiance (kWh/m²/day), which determines how much energy rooftop or ground-mounted panels can produce year-round.
- How many edible plants grow in Portsmouth County?
- Our database identifies 81 edible plant species in Portsmouth County based on regional flora data, USDA hardiness zone, and iNaturalist observations. The full field guide includes identification notes, preparation methods, and seasonal availability.
- What is the autonomy score for Portsmouth County?
- Portsmouth County has an autonomy score of 54. This composite score measures local self-reliance potential across water access, food production capacity, energy resources, and supply chain resilience. Higher scores indicate greater potential for self-sufficiency.