| 4370 | Government | Presidential-level alert (CMAS class 1) |
| 4371-4372 | Extreme | Extreme threat, observed/likely |
| 4373-4378 | Severe | Severe threat |
| 4380-4381 | Test | Required monthly test |
| 4382 | Operator Defined | Operator-defined use |
| 4383 | Government | Presidential-level alert (additional language) |
| 4384-4385 | Extreme | Extreme/severe threat (additional language) |
| 4386-4391 | Severe | Extreme/severe threat (additional language) |
| 4393-4394 | Test | Required monthly test (additional language) |
| 4395 | Operator Defined | Operator-defined use (additional language) |