Maricopa County and Phoenix face extreme and compounding disaster risks. Summer temperatures regularly exceed 115°F, making heat the deadliest weather hazard in Arizona — Maricopa County records more heat deaths than any other county in the US. Flash flooding from monsoon storms strikes with little warning across the desert terrain. Massive haboobs — dust storms up to a mile high — periodically engulf the metro area reducing visibility to zero.
// 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 | 7 / 10 High Risk |
| Primary Hazard | Extreme Heat / Flash Flooding |
| Secondary Hazard | Dust Storm |
| FEMA Flood Zone | Zone X (Heat Risk) |
| Federally Declared Disasters | 38 |
| Last Major Event | Flash Flood (July 2021) |
| Event Frequency | Major event every 3–4 years |
// Emergency Operations
| Emergency Mgmt Phone | (602) 273-1411 |
| Emergency Shelters | 52 designated facilities |
| Evacuation Routes | I-10 East, I-17 North, I-10 West, US-60 East |
// County Profile
| County | Maricopa County AZ |
| State | Arizona (AZ) |
| Population | 4,420,568 |
| Area | 9224 sq miles |
| FEMA Region | Zone X (Heat Risk) |
// Major Cities
// Cities in This County
// Other Arizona 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.