What is an example of suspense in the short story, "There Will Come Soft Rains"?

I wouldn't call this the most suspenseful story ever written in the annals of literature. But that's what makes this an interesting question: what, beyond lyrical language, keeps us reading?

We can see that Bradbury creates suspense in the first lines of the story:

In the living room the voice-clock sang, Tick-tock, seven o'clock, time to get up, time to get up, seven o'clock! as if it were afraid that nobody would. The morning house...

I wouldn't call this the most suspenseful story ever written in the annals of literature. But that's what makes this an interesting question: what, beyond lyrical language, keeps us reading?

We can see that Bradbury creates suspense in the first lines of the story:

In the living room the voice-clock sang, Tick-tock, seven o'clock, time to get up, time to get up, seven o'clock! as if it were afraid that nobody would. The morning house lay empty.

That opening is one example of suspense. Why, we wonder, would the clock fear that nobody would get up? Why is the house empty? Where are the occupants? These questions create unease and encourage us to read on.

At ten o'clock, we learn this is the only house left standing in a ruined landscape, the remnant of what we now suspect has been a nuclear holocaust. 

Our suspense builds as the morning passes, hour by hour, and the house remains deserted. When an upset dog comes in, foaming at the mouth and dies, we are even more curious. What will happen? Despite the house going through its normal routine, nothing is normal. 

Another moment of suspense occurs when the kitchen catches on fire and the fire alarms go off. Will the house, this high tech mechanism, be able to save itself?