So we've all heard the cliché "It was a dark and stormy night" which was originally the first line of the novel Paul Clifford by Edward Bulwer Lytton. So where am I going with this? Well, the first few lines of Robert Browning's "Porphyria's Lover" immediately brought that line to mind. Lines "The Rain set early in to-night,/The sullen wind was soon awake,/It tore the elm-tops down for spite,/And did its worst to vex the lake;" (1-4) show the whole scenery aspect. This completely establishes that something horrible is probably going to take place.
Now, I know nothing about the original cliché that Lytton wrote and whether or not something horrible eventually happened in the story, but the reader immediately thinks something bad is probably going to happen at least in this poem. The tone actually stays throughout the rest of the poem and the reader just seems to get the chills when the speaker starts talking about the intimate details of this woman with long blonde hair. Overall, Browning does a great job of giving some foreshadowing or at least setting the tone that carries throughout the poem.