Previous reviews that state the collection is uneven are fair, accurate.
Ash is by far the best. It is also only 1 of 2 actual apocalypse stories (the second being Pox, though Pox is perhaps the most narrowly focused and lacks any sense of a broad world-wide catastrophe).
The other three are… a cheat. In the second story Abrahams inserts a moment of narration that muses on the idea that any local disaster is ‘an apocalypse to those who experience it’, and thereby rationalizes the inclusion of 3 local disaster stories into an “apocalypse” series. They are NOT apocalyptic. So-uneven. Ash was well done, so the rest was a frustrating missed opportunity.