Cleveland County is home to Moore and Norman — two communities with the highest tornado strike frequency of any urban area in the United States. Moore has been struck by violent EF4 or EF5 tornadoes in 1999, 2003, and 2013. The 1999 Bridge Creek-Moore tornado reached an estimated 318 mph, the highest wind speed ever recorded. This county has more tornado deaths per capita than anywhere in the nation.
// Risk Intelligence
| Threat Score | 9 / 10 Critical Risk |
| Primary Hazard | Tornado / Severe Storm |
| Secondary Hazard | Flash Flooding |
| FEMA Flood Zone | Zone X (Critical Tornado Risk) |
| Federally Declared Disasters | 55 |
| Last Major Event | EF5 Moore Tornado (2013) |
| Event Frequency | Major event every 2–3 years |
// Emergency Operations
| Emergency Mgmt Phone | (405) 366-0220 |
| Emergency Shelters | 22 designated facilities |
| Evacuation Routes | I-35 North, I-35 South, OK-9 East, US-77 South |
// Recommended Preparedness Gear
Based on Cleveland County OK's primary hazard profile (Tornado / Severe Storm), the following gear is recommended for a Critical risk area.
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// County Profile
| County | Cleveland County OK |
| State | Oklahoma (OK) |
| Population | 306207 |
| Area | 541 sq miles |
| FEMA Region | Zone X (Critical Tornado Risk) |