United States
- Orange County
- State
- Federal
- AlertOC Emergency Notification System
- Association of Contingency Planners (ACP) – Orange County chapter
- Community Emergency Preparedness Academy
- Disaster Preparedness and Recovery Alliance (DPRA)
- Health and Emergency Preparedness Council (HEPPC)
- OperationOC
- OC.gov – County of Orange
- Orange County Intelligence Assessment Center
- Orange County Sheriff's Department's Emergency Management Bureau
- Orange County Sheriff’s Department
- Orange County Emergency Channel
- Orange County Fire Authority
- Orange County Health Care Agency
- Orange County Register’s Fire Central
- Orange County Flood Control Division
- Orange County Public Works
- Orange County RACES
- Organized Communities Emergency Volunteer Association
- PrepareOC
- The American Red Cross of Orange County
- Trauma Intervention Program of Orange County
- HealthDisasterOC – Health Disaster Management
- San Onofre Nuclear Generating Station
- Water Emergency Response of Orange County (WEROC)
- California Department of Public Health – Be Prepared California
- California Emergency Management Agency
- California Poison Control
- California’s Department of Water Resources
- COOP: Emergency Prepardness Website for the United States District Court Central District of California
- Southern California Earthquake Data Center
- Ready.gov
- Department of Homeland Security
- Federal Emergency Management Agency (FEMA)
- Centers for Disease Control & Prevention (CDC)
- American Red Cross
- The Weather Channel
- National Weather Center
- Weather Underground
- National Oceanic and Atmospheric Administration (NOAA)
- U.S. Fire Administration
- National Severe Storms Laboratory
- Tsunami Research Center
