When it hits
No set day. It isn't on the calendar: it comes when A Pack Bears Down starts it.
Starts with A Pack Bears Down, ends with 
A Day Under Siege, Then Gone.
The same on every run: 
Wage Slave, Warehouse Manager
What comes
1 wave, 58 zombies in all.
| Wave | When | Zombies | Which | Total HP (Standard) |
|---|---|---|---|---|
| Wave 1 | with the crisis | 58 | Office Worker Zombie×14Barefoot Zombie×9Nurse Zombie×8Worker Zombie×7Crawler Zombie×7Neighbor Zombie×6Soldier Zombie×5Hulk Zombie×2 | 15,857 |
From the game files4
Crisis 208
| id | 208 |
|---|---|
| CrisisID | 208 |
| StartEvent | [52881] |
| EndEvent | [52882] |
| ForecastEvent | [52880] |
| Des | Crisis_Des_208 |
| Des_Local | 被引来的尸群 |
| CrisisShowType | 1 |
| CrisisShowPara | [8,9] |
| CrisisFmod | ["event:/Model/Zombie/zombie_zamen10","event:/Model/Zombie/zombie_zamen11","event:/Model/Zombie/zombie_zamen12","event:/Model/Zombie/zombie_zamen14","event:/Model/Zombie/weijizamen05"] |
| CrisisFmodTime | [11.9,8.1,12,10.2,11.2] |
| CrisisFmodGapMin | 1.5 |
| CrisisFmodGapMax | 4 |
