Hillsborough County and Manchester in southern New Hampshire face low but real hurricane remnant and flooding risk. Irene in 2011 caused significant flooding across New Hampshire river systems. The Merrimack River creates flooding risk through Manchester. New Hampshire's location in the Northeast means it receives degraded hurricane systems as they track northward from the Mid-Atlantic.
// Preparedness Recommendations
- Evacuation routes inland should be identified in advance.
- Store at least 72 hours of food and water.
- Elevate critical belongings above flood level.
- Have backup power ready in case of grid failure.
// Recommended Supplies
Essential gear for power outages, severe weather, and emergency situations in your area.
- Emergency Food Supplies
- Water Filtration & Storage
- Backup Generator
- Solar Backup Power
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// Risk Intelligence
| Threat Score | 4 / 10 Low Risk |
| Primary Hazard | Hurricane / Flooding |
| Secondary Hazard | Winter Storm |
| FEMA Flood Zone | Zone X (Low Risk) |
| Federally Declared Disasters | 20 |
| Last Major Event | Hurricane Irene (2011) |
| Event Frequency | Major event every 7–10 years |
// Emergency Operations
| Emergency Mgmt Phone | (603) 669-0900 |
| Emergency Shelters | 14 designated facilities |
| Evacuation Routes | I-293 North, I-93 South, US-3 North, NH-101 East |
// County Profile
| County | Hillsborough County NH |
| State | New Hampshire (NH) |
| Population | 422,937 |
| Area | 876 sq miles |
| FEMA Region | Zone X (Low Risk) |
// Major Cities
// Cities in This County
// Other New Hampshire Counties
// Nearby Infrastructure Risks
Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.
Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.