In the last couple of decades prewrath has had such a huge impact on pretribulationism that many pretrib teachers have changed its fundamental timeline.
Many pretrib teachers now, including Bill Salus, have jettisoned the traditional view that the rapture occurs the same day that Daniel’s seventieth week begins (i.e. the seven-year period), which they erroneously equate with the day of the Lord’s wrath.
Because of the clear biblical passages that teach that certain key events must happen before the day of the Lord, this has caused major problems for pretribulationism. So pretrib teachers now are creating a new dispensation, a gap of weeks, months, or years (depending on the pretrib teacher) between the rapture and the beginning of Daniel’s seventieth week in order for these prophecies to take place.
The real impetus for this is to maintain their unbiblical doctrine of an imminent rapture. That is the controlling presupposition in their eschatological system.
I have refuted this idea of an interval between the rapture and the day of the Lord many times. The Bible consistently teaches that the day the rapture occurs will be the same day that the day of the Lord’s wrath begins, which will occur prewrath, sometime during the second half of the seven year period when the Antichrist’s great tribulation is cut short.
Recently, I have explicated this same-day point fully in a talk I gave at a recent Bible prophecy conference (see here at the e-store for the mp3 and notes).